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Cooper Bussmann BU-945U-E 802.11 DSSS Network Card User Manual

1. Signal Channel 20 MHz 10 MHz 5MHz 2 5MHz 1 25MHz Hops 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 72 22 11 55 28 11 55 28 14 55 28 14 7 28 14 69 34 14 69 34 177 75 20 10 5 25 10 5 25 13 5 25 13 6 25 13 63 31 13 63 31 166 81 17 85 43 21 485 43 21 11 743 21 11 5 21 114 53 27 11 53 27 13b 84 11 55 28 14 55 28 14 7 28 14 69 34 14 69 34 17 69 34 17 094 88 9 45 23 11 45 23 11 6 23 11 56 28 11 56 28 14 56 28 14 078 91 6 3 15 75 3 15 75 38 1 5 75 38 19 75 38 19 09 38 19 09 059 91 45 225 11 56 2 3 11 56 28 11 56 28 14 56 28 14 07 28 14 07 044 92 3 15 8 38 15 75 38 19 8 38 19 03 38 19 09 05 19 09 05 029 93 T 5 25 13 05 25 13 06 3 13 06 03 13 06 03 02 06 03 02 013 3A1582Rev1 6 www cooperbussmann com BussmannWirelessResources Cooper Bussmann Wireless Ethernet 8 Device Server BU 945U E 802 11 DSSS User Manual 3 3 Configuring the Unit for the First Time The BU 945U E has a built in web server containing web pages for analyzing and modifying the module s configuration The configuration can be accessed using Microsoft Internet Explorer version 7 or greater This program is shipped with Microsoft Windows or may be obtained freely via the Microsoft website If using other browsers they must be fully compliant with IE7 SSL security gt NOTE Microsoft Internet Explorer Version 6 will not load web pages due to a compatibility is
2. icrosoft Windows XP Version 5 1 26001 CC Copyright 1985 2661 Microsoft Corp C Ndced c Njperf 2 8 2Nbin C jperf 2 2 bin gt 4 gt Figure 1 When path has been set enter in Iperf s to start the server application as seen in Figure 2 74 www cooperbussmann com BussmannWirelessResources 3A1582Rev1 6 Cooper Bussmann Wireless Ethernet amp Device Server BU 945U E 802 11 DSSS User Manual c Command Prompt iperf s Ned jperf 2 8 2Nbin Njperf 2 8 2Nbindiperf s erver listening on TCP port 5661 CP window size 8 66 KByte Cdefault Figure 2 Note If you get a security pop up on PC select Unblock for the application to run Iperf server application is now running and waiting for a Client connection On the Client PC open up the CMD prompt as performed on Server PC above followed by changing the directory path jperf 2 0 2 bin as performed above also This time instead of entering in Iperf s we enter in Iperf c lt IP address of Server PC gt w 65535 as seen in figure 3 cx Command Prompt icrosoft Windows XP Version 5 1 2660 CC Copyright 1985 2661 Microsoft Corp Ncd jperf 2 2 bin jperf 2 2 bin gt iperf c 192 168 060 185 w 65535 Figure 3 This will run a test over the modem link to the Server PC and report back results as seen in figure 5 cx Command Prompt icrosoft Windows XP Version 5 1 2666 CC Copyright 1985 2661 Microsoft Corp Ned c Njperf 2 8 2Nbin Njp
3. Firmware versions 1 0 3 and later may be upgraded via the configuration web pages This upgrade can be done locally with a PC connected directly to the module or remotely over a working radio link For remote upgrade it is advisable to reduce radio traffic over the link from other devices as much as possible If necessary create a temporary separate radio network to perform the upgrade to remote modules Please refer to the Web based Upgrade section for the upgrade procedure Web Based Upgrade Web based firmware upgrade is available from the System tools page by selecting firmware upgrade Firmware upgrade is performed by uploading a patch file which is specific to the currently installed firmware version If the device firmware version has fallen multiple versions behind the desired version it may be necessary to upload multiple patch files Once the patch files are uploaded reset the module to perform the firmware upgrade You will receive more detailed instructions if it is necessary to upgrade the module firmware Firmware Upgrade Firmware upgrade may be performed using this page Firmware upgrades may be made using the radio network Note that the unit must be reset before the new firmware is applied DO NOT DISCONNECT POWER UNTIL FIRMWARE UPGRADE IS COMPLETE If programming fails a manual firmware upgrade may have to be performed locally to restore normal operation Upgrade will take approximately 1 minute if c
4. enter the IP address of the BU 945U E and the port selected in the Network port field 3A1582Rev1 6 www cooperbussmann com BussmannWirelessResources 45 Cooper Bussmann Wireless Ethernet 8 Device Server BU 945U E 802 11 DSSS User Manual Modbus TCP to RTU Gateway The Modbus TCP to RTU Gateway allows an Ethernet Modbus TCP Client Master to communicate with a serial Modbus RTU Slave The BU 945U E makes this possible by internally performing the necessary protocol conversion The conversion is always performed by the BU 945U E which is directly connected to the Modbus serial device i e only this module needs to have Modbus TCP to RTU Gateway enabled Client Access Point RS232 Wodbus TCP toRTU Gateway gt RS232 Modbus RTU Slave Modbus TCP Server Master The above example demonstrates how a Modbus TCP Client Master can connect to one or more Modbus RTU i e serial Slaves In this example the BU 945U E Access Point is configured with the RS232 Modbus TCP to RTU Gateway enabled Once enabled the gateway converts the Modbus TCP queries received from the Master into Modbus RTU queries and forwards these over the RS232 port to the Slave When the serial response to the query arrives from the Slave it is converted to a Modbus TCP response and forwarded via the network to the Modbus TCP Master If no response was received serially by the BU 945U E within the configured Response Timeout the BU 945U E will i
5. 5201 AP Only Transmit Data Rate to Client STA 5202 AP Only MAC address of Client STA AIC AP Only Dynamic list of STA s Refer to register 5023 5033 etc for starting register of each wi interface 9999 Both Reset module enter FFFF to reset module 60 www cooperbussmann com BussmannWirelessResources 3A1582Rev1 6 Statistic Registers Register 4500 4502 4504 4506 4508 4510 4512 4514 4516 4518 4520 4522 4524 4526 4528 4530 4532 4534 4536 4538 4540 4542 4544 4546 4548 4550 4552 3A1582Rev1 6 Cooper Bussmann Wireless Ethernet 8 Device Server BU 945U E 802 11 DSSS User Manual Both Both Both Both Both Both Both Both Both Both Both Both Both Both Both Both Both Both Both Both Both Both Description Total data packets received on the interface Received frames with antenna 1 TX RX Received frames with antenna 2 RX Receiver default antenna switches Receive message failed due to bad CRC Receive message failed due to decryption Receive message failed due to MIC failure Receive message failed due to FIFO overrun Beacon missed interrupts Total data packet sent on the interface Transmit frames with antenna 1 TX RX Transmit frames with antenna 2 RX Transmitter antenna switches Transmitter on chip retries Transmit message failed due to too many retries Transmit frames with alternate rate Transmit frames with no ack marked i e broadcast multicast Management fram
6. Ensure that the antenna mounting bracket is well connected to ground earth 2 3 Power Supply The BU 945U E module can be powered from a 9 30Vdc power supply The power supply should be rated at 1 Amp minimum The positive side of the supply must not be connected to earth The supply negative is connected to the unit case internally The DC supply may be a floating supply or negatively grounded The power requirements of the BU 945U E unit are shown in the following table 12Vdc 24Vdc l MB Quiescent 300mA 160mA RS485 TX 100mW 370mA 190mA 7 5 g TX 400mW 410mA 210mA avr O g SUPPLY A Ground Terminal is provided on the back of the module This com Terminal should be connected to the Main Ground point of the O pio MODEM installation in order to provide efficient surge protection for the module refer to the Installation Diagram 2 4 Serial Connections RS232 Serial Port The serial port is a 9 pin DB9 female and provides for connection to a host device as well as a PC terminal for configuration field testing and for factory testing Communication is via standard RS232 signals The BU 945U E is configured as DCE equipment with the pinouts detailed below Hardware handshaking using the CTS RTS lines is provided The CTS RTS lines may be used to reflect the status of the local unit s input buffer The BU 945U E does not support XON XOFF Example cable drawings for connection to a DTE host a PC or MODEM DC
7. electrical safety training amp component testing for Agency compliance Contact e Phone 636 207 3294 e E mail services cooperindustries com e www cooperc3 com e 877 995 5955 for log in assistance Your Authorized Cooper Bussmann Distributor is PDF Only COOPER Bussmann www cooperbussmann com BussmannWirelessResources 3A1582Rev1 6
8. or as a Whitelist to allow traffic for listed devices and protocols The Filter operates on four rules listed below e The MAC Address filter is always checked before the IP Address filter e f a message matches a MAC filter entry it will not be subsequently processed by the IP filter If the MAC filter list is a Whitelist the message will be accepted If the MAC filter list is a Blacklist the message will be dropped e The MAC address list checks the Source address of the message only e The IP Address filter checks both the source address and the destination address of the message If either address match then the rule is activated e APP filtering applies only to ARP request packets typically these are broadcast packets which are sourced from the Ethernet interface and destined for the wireless interface ARP requests from devices on the wireless network will always be passed to the Ethernet interface ARP response packets will always be passed When configuring a Whitelist it is important to add the Addresses of all devices connected to the BU 945U E wired Ethernet port that communicate over the wireless link It is particularly important to add the Address of the configuration PC to the Whitelist Failure to add this address will prevent the configuration PC from making any further changes to configuration Design of the filter may be simplified by monitoring network traffic and forming a profile of traffic on the wired network Ne
9. this application support 8 00 a m 4 30 p m for all US time zones is available Monday Friday 8 00 a m 5 00 p m CT Contact Contact e Toll free phone 855 287 7626 855 BUSSMANN e Phone 636 527 1270 e Toll free fax 800 544 2570 e Fax 636 527 1607 e E mail busscustsat cooperindustries com e E mail fusetech cooperindustries com e Live Chat www cooperbussmann com Emergency and After Hours Orders Next flight out or will call shipment for time critical needs Customers pay only standard product price rush freight charges amp modest emergency service fee Place these orders through the Customer Satisfaction Team during e Product search amp cross reference regular business hours For after hours contact e Product amp technical materials l e Phone 314 995 1342 e Solutions centers for information on topical issues including arc flash selective coordination amp short circuit current rating e Technical tools like our arc flash calculator e Where to purchase Cooper Bussmann product Online Resources Visit www cooperbussmann com for the following resources C3 the Enhanced Online Cooper Customer Center Provides real time product availability net pricing order status amp shipment tracking across six Cooper divisions B line Bussmann Crouse Hinds Lighting Power A Systems amp Wiring Devices Available at Services Cooper Bussmann Services team provides engineering expertise in electrical system reviews
10. 1 and the radio disabled Do not forget to set the switch back to the RUN position and restart the module at the conclusion of configuration for resumption of normal operation e Power up the BU 945U E module e Open Network Settings on your PC under Control Panel The following description is for Windows XP earlier Windows operating systems have similar settings Internet Protocol TCP IP Properties General You can get IP settings assigned automatically if your network supports this capability Otherwise you need to ask your network administrator for ii ta the appropriate IP settings e Open Properties of Local Area Connection e Select Internet Protocol TCP IP and click on Properties Oe aikoa atoiak Use the following IP address e On the General tab enter IP address 192 168 0 1 Subnet mask IP address 192 168 0 17 255 255 255 0 and press OK Subnet mask 255 255 255 0 e Open Internet Explorer and ensure that settings will allow you to Default gateway connect to the IP address selected If the PC uses a proxy server ensure that Internet Explorer will bypass the Proxy Server for local addresses Use the following DNS server addresses i Preferred DNS server e This option may be modified by opening Tools gt Internet Options gt Connections Tab gt LAN Settings gt Proxy Server gt bypass proxy for local addresses aaa e Enter the default IP address for the B
11. 945U E offers three different serial functions which are PPP server Serial Gateway and Modbus TCP to RTU Gateway RS 232 PPP Server The BU 945U E can be used as a PPP Point to Point Protocol Server to connect the wireless system to serial devices via the RS232 or RS485 serial ports PPP Server enables a network connection to the BU 945U E over a serial cable This is much like dial up internet The maximum serial data rate is 115 200bps Hardware or Software flow control may be selected With minimal configuration on the PC you may use Dial up networking in Windows XP to connect to the network via the serial port For the BU 945U E users must configure the local IP address for the BU 945U E and the remote device IP address Some care must be taken in selecting these IP addresses e f you wish to use routing over this serial network connection then the IP addresses selected must not lie on Wireless or Wired Ethernet networks already configured into the device You must ensure they set routing rules appropriately for devices either side of the network e f you want the serial device visible as present on the Wireless or Wired network then the local IP address must be the same as the IP address set for the desired port A process called Proxy ARP is used to make the device visible on the network In this process the BU 945U E pretends that it holds the IP address on the network and responds on behalf of the remote device The resul
12. COM The 1 0 circuit includes a LED indicator which is lit GREEN when the digital input is active that is when the input circuit is closed Provided the resistance of the switching device is less than 200 ohms the device will be able to activate the digital input Voltage free contact input The 1 0 channel may also be used as a discrete output The digital outputs are transistor switched DC signals FET output to common rated at 30Vdc 500 mA The output circuit is connected to the DIO terminal The digital output circuit includes a LED indicator which is lit RED when the digital output is active Max 30VDC 0 5A gt MODE 3A1582Rev1 6 www cooperbussmann com BussmannWirelessResources Cooper Bussmann Wireless Ethernet 8 Device Server BU 945U E 802 11 DSSS User Manual CHAPTER 3 OPERATION 3 1 Start up Access Point Start up When an Access Point AP unit starts up it will immediately begin transmitting periodic messages called beacons on the configured channel Beacons include information that a Client may examine in order to identify if the Access Point is suitable for link establishment Clients will only attempt to establish a link with an Access Point whose beacon indicates a matching SSID Access Points do not initiate link establishment Client Start Up When a Client powers up it scans for beacons from Access Points While a link is not established the Client cyclically scans all available channe
13. Corp gt ipconf ig indows IP Configuration thernet adapter Test LAN TestPC 192 168 6 17 255 255 255 0 Connection specific DNS Suffix IP Address Subnet Mask o Default Gateway gt In the above example ipconfig was entered in the command prompt The reply back shows the PC s IP address Subnet mask and the gateway it is connected to Other ipconfig commands will return back more information The hardware or MAC address of the computer may be discovered using the command ipconfig all loconfig Lists all of the commands and their usages available for use Arp Displays and modifies the IP to Physical address translation tables used by Address Resolution Protocol ARP Once a remote computer has been pinged this can be used to see the IP address amp MAC address of the remote computer It will also show any other devices on the network that it may be connected to cx Command Prompt E x Narp a Interface 192 168 6 17 x3 Internet Address Physical Address Type 192 168 6 99 60 6d 88 7e 2f 73 dynamic 192 168 606 185 60 12 af 00 91 14 dynamic 192 168 606 187 60 12 af 00 98 cc dynamic IN Command used for above screen shot is arp a It shows the PC s direct IP address of 192 168 0 17 as also shown before with ipconfig command The other IP address shown with its associated MAC address is another device with a connection to the PC In
14. E 802 11 DSSS User Manual APPENDIX D IPERF THROUGHPUT TEST EXT This Appendix shows how to set up and use the Iperf application to test the throughput of Ethernet Modems Iperf is a tool used to measure the throughput and quality of a network link Another Application called Jperf can also be used which gives a graphical interface for all results This instruction covers both Iperf and Jperf it does not cover the setup and configuration of the modems Details can be found in previous sections Materials e 2 x Ethernet Modems configured as a bridge e 2 x PC Computers with Ethernet Ports e Suitable Power Supplies for the Ethernet Modems e Straight through Ethernet cables e perf Jperf Application Installation The Application can be downloaded from the following link http sourceforge net projects iperf download and save to a location on your PC Extract to zip file to the ROOT directory on your PC i e C This folder contains the main Iperf application as well as the Jperf graphical interface Copy this folder to the 2nd PC or download to the second PC and extract as per above instructions Iperf Applications To run Iperf the 1st PC must be set as the Client Master and 2nd PC set as the Server Slave At the Server PC run a Command prompt from Start run then enter CMD When command prompt appears we need to set the directory to where the Iperf application resides as seen in Figure 1 cx Command Prompt 20 x
15. However due to the spanning tree protocol only one of B or C will relay the data with the other taking over in the event of a failure 3A1582Rev1 6 www cooperbussmann com BussmannWirelessResources 35 Cooper Bussmann Wireless Ethernet amp Device Server BU 945U E 802 11 DSSS User Manual The configuration for Site A and B are shown below In this example Site B uses its primary access point to act as an access point for Virtual Stations on Site A and D and uses a Virtual Station to act as a client to Site C Site A uses two Virtual Stations to act as clients to Site B and to Site C Device Mode Operating Mode Access Point M Device Mode Bridge Bridge STP System Address ESSID SSID B Site B Virtual Station SSID SSID_C Virtual Station SSID SSID B Virtual Station SSID SSID_C WDS Bridge a Biag E Virtual AP Redundant Networks E Virtual Station Site C Site B configuration Network Page configured as Primary Access Point WDS Connections Add Entry Delete Entry Connection SSID MAC Encryption Encryption Key Router IP Router STP Mode Address Subnet 1 Sta Uplink ssiD c WPA2 PSK AES PassPhrase Site B WDS configuration Repeaters Page configured with Virtual Station to Site C WDS Connections Add Entry Delete Entry Connection SSID MAC Encryption Encryption Key RouterIP Ro
16. arbitrary name of your choice Device Name Host Name This is the DNS name of the local device Commonly referred to as the host name or computer name This setting is duplicated on the main Module Information configuration page This is the name which is used to refer to this device Refer Section 3 17 Module Information Configuration 3 11 Spanning Tree Algorithm Redundancy The bridge Spanning Tree Protocol function was introduced to handle network loops and provide redundant paths in networks To enable tick the STP box on any WDS Connections you have configured on the Repeaters configuration page For example consider this network with a redundant wireless link If the bridge Spanning Tree Protocol is enabled one of the two wireless links will be disabled that is all wireless data will be transferred by one link only If the active link fails the other link will automatically start transferring the wireless data 3A1582Rev1 6 www cooperbussmann com BussmannWirelessResources 31 Cooper Bussmann Wireless Ethernet 4 Device Server BU 945U E 802 11 DSSS User Manual Access Point Bridge Client Bridge Access Point The Spanning Tree Protocol implemented is IEEE 802 1d compatible The algorithm forms a loop free network by blocking traffic between redundant links in the network These blocked links are placed in a standby condition and may be automatically enabled to repair the network if another lin
17. automatically drop to the next lowest data rate and if subsequent transmissions are successful at the lower rate the BU 945U E will attempt to increase to the next highest rate When a station connects to an access point the two devices negotiate a data rate based which is within configured range of radio data rates for both devices 28 www cooperbussmann com BussmannWirelessResources 3A1582Rev1 6 Cooper Bussmann Wireless Ethernet 8 Device Server BU 945U E 802 11 DSSS User Manual Select the Radio Menu to change the following configuration parameters If a change is made you need to select Save Changes to retain the changes Changes will not take effect until the unit is reset Radio Mode Transmit Power Channel AP Only Channel Width Transmit Data Rate Basic Rate DTIM Period AP only RTS Threshold Ready to Send Fragmentation Threshold Enable Receive Enable Transmit Diversity Interference Mitigation Disable SSID broadcast AP only Bursting Passive Scanning STA only 3A1582Rev1 6 BU 945U E Only Supports the 802 11 Standard This allows adjustment of the radio power Do not set the radio Level power above the allowed setting for your country You can reduce the power for short range applications or to allow the use of high gain transmitter antennas while still complying with the emission requirements of your country See Appendix C for dBm to mW conversion Select available channel
18. course have one or more client stations connected Since the locations are fixed we can avoid the overhead of using the Bridge Spanning Tree protocol here by configuring fixed WDS links to ensure that each Access Point will only connect to the next Access Point in the chain Any number of additional intermediate repeaters could be added to the chain in a similar way WDS Connections Comnection SSID MAC Encryption Encryption Key Router IP Router STP Mode Address Subnet 1 5ta Upling Mj SSID C WPA2 PSK AES Mj PassPhrase F Site B WDS Configuration 1 The WDS configuration for unit B is shown above this page is accessible via the Repeaters link from the configuration web pages Site B is acting as an Access point for Site A and is a client to Site C likewise Site C is acting as an Access Point for Site B and a Client for Site D Since this example is a bridged network i e all devices on the same IP network and each link is using a different SSID there is no possibility of loops i e multiple paths to the same location therefore we do not need to incur the overhead of enabling STP bridge spanning tree protocol We specify the devices at the other end of the WDS links by SSID only MAC addresses can be used to specify point to point links to third party devices which do not support meshing via SSID In this example each Virtual connection is using the same Encryption method WPA PSK AES with a key of Pass Ph
19. either the local serial port or a remote BU 945U E serial port by enabling the Modbus TCP to RTU gateway at the corresponding serial port see section 3 14 Serial Port Configuration Modbus TCP Client functionality allows connections to a maximum of 25 different Modbus TCP Servers Modbus TCP Server Slave enables the BU 945U E to accept connections Modbus TCP Configuration from one or more Modbus TCP Clients Masters All Modbus transactions routed to the onboard Modbus TCP Server are directed to from the onboard Enable Modbus TCP Server Slave general purpose 1 0 registers The Modbus TCP Server is shared with the Modbus TCP to RTU Gateway so that the Modbus Device ID is used to Modius Sava Dexe id J determine if a Modbus transaction is to be routed to the onboard Modbus Enable Modbus TCP Client Master C TCP Server or to a Modbus RTU device connected to the serial port Care Modbus Client Scan Rate msec 1000 should therefore be taken that all serially connected Modbus devices use a different Modbus Device ID i e Modbus Slave Address to the onboard Reset Registers on Comms Fail Modbus TCP Server Up to 32 separate connections to the Modbus TCP Comms Fail Timeout sec 10 Server are supported Enable Modbus Statistics 3A1582Rev1 6 www cooperbussmann com BussmannWirelessResources 49 Cooper Bussmann Wireless Ethernet 8 Device Server BU 945U E 802 11 DSSS User Manual Modbus RTU serial Master
20. for use in explosive environments without additional protection 6 The BU 945U E Operates using the same Radio frequencies and communication protocols as commercially available off the shelf equipment lf your system is not adequately secured third parties may be able to gain access to your data or gain control of your equipment via the radio link Before deploying a system make sure you have considered the security aspects of your installation carefully GNU Free Documentation License 2011 Cooper Bussmann Cooper Bussmann is using a part of Free Software code under the GNU General Public License in operating the BU 945U E product This General Public License applies to most of the Free Software Foundation s code and to any other program whose authors commit by using it The Free Software is copyrighted by Free Software Foundation Inc and the program is licensed As is without warranty of any kind Users are free to contact Cooper Bussmann for instructions on how to obtain the source code used in the BU 945U E A copy of the license is included in the section entitled GNU Free Documentation License 3A1582Rev1 6 www cooperbussmann com BussmannWirelessResources 3 Cooper Bussmann Wireless Ethernet 8 Device Server BU 945U E 802 11 DSSS User Manual CONTENTS CHAPTER 1 INTRODUCTION c ccc eee ee aeee 5 Example Adding Redundancy 000e 35 1 1 NETWORK TOPOLOGY 0 n
21. frequency and bandwidth from drop down list Different Regions will only show the channels available for that region Used when configuring Clients STA A Client will scans for available AP s that it can then connect with Selecting a Channel Width will limit the number of channels the Client will scan i e if 5MHZz is selected then the Client will only scan the MHz channels If Auto is selected then it will scan all channels and all bands Default is Auto The radio baud rate in Mega million bits per second Mbps for point to point radio transmissions The default value is Auto Select a fixed rate to force the radio to use the selected rate Note Increasing the Transmit Data rate will decrease the Transmit power level i e 36Mbps data rate will reduce the TX power to 400mW 48Mbps will reduce the power to 200mW and 54 Mbps will reduce the power to 125mW This is the default data rate that the AP uses when sending beacons Beacon Interval AP only This interval is the period between beacon transmissions sent by an Access Point The default value is 100 milliseconds and it may be adjusted from 50 to 4095 milliseconds DTIM sets which beacon frames incorporate extra information for low power sleeping client devices Normally set this to 1 RTS frames can be used to help avoid radio collisions between two stations that cannot directly hear each other Any frame larger than RTS Threshold bytes will be preceded by an RTS message The d
22. functionality is achieved by combining the Modbus TCP Client Master and Modbus TCP to RTU Gateway Simply specify a Modbus TCP Client Master connection to a Modbus TCP Server where the server is the address of any BU 945U E with Modbus TCP to RTU Gateway enabled Care should be taken to ensure that the Device ID i e Modbus Address of the serial device is different to the Device ID of the onboard Modbus TCP Server of the BU 945U E that the serial device is connected to The BU 945U E provides a configurable option to automatically reset the value of the onboard O registers to zero in the event of a communications failure If a valid Modbus transaction directed to from a given register has not been completed for longer than a configurable timeout then the value of that register will be reset to zero An example of the Modbus functionality of the BU 945U E is illustrated below In this example the status of the onboard digital input at C will be reflected at the onboard digital output at B Also 8 single bit registers from Modbus serial device D will be transferred to A 192 168 0 123 192 168 0 200 Modbus TCP Modbus TCP Client Server Modbus RTU 4 Device Device Modbus RTU Slave ID 5 ID 6 Slave A D Modbus TCP Client Mappings Add Entry I Delete Entry Local TO Function Code Destination Device Server IP Address Response Comm Register Count Register Id Timeout Fail ms Register 1 4300 1 15 Write Coils 4320 1 19
23. guarantees that the correct message has been received The IP part is the user s computer address on a network Every computer in a TCP IP network has its own IP address that is either dynamically assigned at startup or permanently assigned All TCP IP messages contain the address of the destination network as well as the address of the destination station This enables TCP IP messages to be transmitted to multiple networks subnets within an organization or worldwide www cooperbussmann com BussmannWirelessResources 71 Cooper Bussmann Wireless Ethernet 8 Device Server BU 945U E 802 11 DSSS User Manual VolP Voice Over Internet Protocol Voice transmission using Internet Protocol to create digital packets distributed over the Internet VoIP can be less expensive than voice transmission using standard analog packets over POTS Plain Old Telephone Service VPN Virtual Private Network A type of technology designed to increase the security 0f information transferred over the Internet VPN can work with either wired or wireless networks as well as with dial up connections over POTS VPN creates a private encrypted tunnel from the end user s computer through the local wireless network through the Internet all the way to the corporate servers and database WAN Wide Area Network A communication system of connecting PCs and other computing devices across a large local regional national or international geographic area Also used to d
24. invalid Trusted CA Certificate Contents Displays the contents of the loaded certificate WPA Enterprise Supplicant Configuration Username Username Password Password Enable Debug Save Changes Save Changes and Reset Trusted CA certificate upload This certificate belongs to the issuer of the certificate for the 802 1x RADI WPA Enterprise Authenticator Configuration RADIUS Server IP Address Port shared secret Connection information for the RADIUS Authentication Server Supplicant Re authenticate Period Sets the maximum time at which the Supplicant must re authenticate This parameter determines maximum time a client will still have access to the network after its user credentials have been revoked Enable Debug Must only be used during commissioning and only if requested by Cooper Bussmann Support This must be disabled for normal operation WPA Enterprise Authenticator Configuration RADIUS Server IP Address 192 168 0 75 RADIUS Server Port 1812 RADIUS Server Shared Secret secret Supplicant Reauthenticate Period 3600 seconds Enable Debug Save Changes Save Changes and Reset 3A1582Rev1 6 www cooperbussmann com BussmannWirelessResources 27 Cooper Bussmann Wireless Ethernet 8 Device Server BU 945U E 802 11 DSSS User Manual 3 6 Normal Operation After addresses are configured the units are ready for operation Refer to section 1 for an explanation on the oper
25. lot easier to locate problems when the equipment is all together There are other configuration settings which may or may not improve the operation of the system For details on these settings refer to section 3 1 Start up 8 www cooperbussmann com BussmannWirelessResources 3A1582Rev1 6 Cooper Bussmann Wireless Ethernet 8 Device Server BU 945U E 802 11 DSSS User Manual CHAPTER 2 INSTALLATION 2 1 General The BU 945U E modules are housed in a rugged aluminum case suitable for DIN rail mounting Terminals will accept wires up to 2 5 mm 12 gauge in size All connections to the module must be SELV Safety Extra Low Voltage Normal 110 250V mains supply must not be connected to any terminal of the BU 945U E module Refer to Section 2 3 Power Supply Before installing a new system it is preferable to bench test the complete system Configuration problems are easier to recognize when the system units are adjacent Following installation the most common problem is poor communications caused by incorrectly installed antennas or radio interference on the same channel or the radio path being inadequate If the radio path is a problem i e path too long or obstructed a higher performance antennas or a higher mounting point for the antenna may rectify the problem Alternately use an intermediate BU 945U E Module as a repeater The BU 945U E Installation Guide provides an installation drawing appropriate to most applications F
26. net gain for US and Canada is 10dB 4W ERP and OdB for Australia and NZ 1 W ERP There is no gain restriction for antennas connected to the RX connector unless TX Diversity is enabled on the Radio page The gains and losses of typical antennas are Antenna BU 945U E Gain dBi Omni Dipole 0 dB Omni Collinear 5 or 8 dBi Yagi Directional 10 15 dBi Cable Loss dB per 30 m 100 ft RG58 Cellfoil 9 dB RG213 7 4 dB LDF4 50 2 dB 10 www cooperbussmann com BussmannWirelessResources 3A1582Rev1 6 Cooper Bussmann Wireless Ethernet 8 Device Server BU 945U E 802 11 DSSS User Manual The net gain of the antenna cable configuration is determined by adding the antenna gain and the cable loss For example an 8dBi antenna 5 8dBd with 10 meters of Cellfoil 3dBd has a net gain of 2 8dB 5 8dB 3dB Installation tips Connections between the antenna and coaxial cable should be maan carefully taped to prevent ingress of moisture Moisture ingress in the coaxial cable is a common cause for problems with radio systems as it greatly increases the radio losses We recommend that the TCD connection be taped firstly with a layer of PVC Tape then with a vulcanizing tape such as 3M 23 tape and finally with another layer Stretch to elongate sealant tape of PVC UV Stabilized insulating tape The first layer of tape allows the while wrapping over the connection joint to be easily inspected when trouble shooting as the vul
27. on the BU 945U E Take care to remember this username if you change it as it will be needed to access the BU 945U E in future Password Configuration of Password This is the password used to access the configuration on the BU 945U E Take care to remember this password if you change it as it will be needed to access the module in future Device Name A text f device Owner A text fi Contact A text f Description A text f Location A text f 52 www ield if you wish to label the particular BU 945U E This is also the DNS name hostname of the if you are using DNS eld for owner name ield for owner phone number email address etc ield used for a description of the purpose of the unit ield used to describe the location of the BU 945U E cooperbussmann com BussmannWirelessResources 3A1582Rev1 6 Cooper Bussmann Wireless Ethernet 8 Device Server BU 945U E 802 11 DSSS User Manual 3 19 System Tools The System Tools Page has a number of tools that help maintain the module firmware and configuration Configuration Summary System Log File Read Configuration Write Configuration Firmware Upgrade Reset Factory Default Configuration 3 20 Remote Configuration This option is used to save all the different configuration pages onto one page for easy viewing Page can also be saved using the File Save As function on the drop File Menu for future reference and emailing to Coopre Bussmann Support in the event of any con
28. pin Antenna COAXIAL CABLE MAST MODEM PROVIDE GOOD GROUND CONNECTION TO MAST MODULE AND SURGE ARRESTOR IF GROUND CONDITIONS ARE POOR INSTALL MORE THAN ONE STAKE 3A1582Rev1 6 www cooperbussmann com BussmannWirelessResources 11 Cooper Bussmann Wireless Ethernet 8 Device Server BU 945U E 802 11 DSSS User Manual Directional Antennas Directional antennas can be a e Yagi antenna with a main beam and orthogonal elements e Directional radome which is cylindrical in shape e Parabolic antenna A directional antenna provides high gain in the forward direction but lower gain in other directions This may be used to compensate for coaxial cable loss for installations with marginal radio path Yagi antennas should be installed with the main beam horizontal pointing in the forward direction If the Yagi is transmitting to a vertically mounted omni directional antenna then the Yagi elements should be vertical If the Yagi is transmitting to another Yagi then the elements at each end of the wireless link need to in the same plane horizontal or vertical Directional radomes should be installed with the central beam horizontal and must be pointed exactly in the direction of transmission to benefit from the gain of the antenna Parabolic antennas should be mounted as per the manufacturer s instructions with the parabolic grid at the back and the radiating element pointing in the direction of the transmission
29. this example it is the IP address of a PLC connected to the PC also Arp lists all the commands available for this function 64 www cooperbussmann com BussmannWirelessResources 3A1582Rev1 6 Cooper Bussmann Wireless Ethernet 8 Device Server BU 945U E 802 11 DSSS User Manual Route Route is used where you are joining two or more different networks together via the BU 945U E Refer to Section 1 1 for more details If more than one routing rule is needed then a Routing Table is required e g Multiple networks each with a different IP range If only one route is required a Default Gateway IP Address on the Main Network Page can be configured instead of configuring a Routing Rule In the example below a routing rule needs to be entered into the Network A s PC which will allow access between Network A and Network B This is can be entered at the command prompt as per instruction below Route PRINT will show all active routes on PC Route ADD will add a routing table to network route DELETE lt DESTINATION NETMASK GATEWAY INTERFACE gt will delete the unwanted routing table route CHANGE modifies an existing route Ethemet IP 192 168 0 191 Wireless IP 192 168 2 51 Gateway IP 192 168 0 1 Ethernet IP 192 168 2 50 Wireless IP 192 168 2 50 Gateway IP 192 168 2 51 Access Point Router NETWORK A NETWORK B 192 168 0 17 192 168 2 201 Gateway IP 192 168 0 1 Gateway IP 192 168 2 51 An example of a routing table is show
30. to communicate with the module for further configuration Select Blacklist or Whitelist Blacklist will prevent all listed devices from accessing the module and using the radio link Whitelist will allow devices with the MAC addresses listed to communicate with the module and utilize the radio link All other devices are blocked Add Entry Add a row to the table of Mac Address filter rules Delete Entry Delete the currently selected MAC address filter rule Enable Check to enable the rule MAC Address Enter the desired source MAC Address Save Changes Save changes to non volatile memory Reset is required to activate Save Changes and Reset Save to non volatile memory And restart to activate changes IP Address Filter Configuration The IP filter allows can be used to permit or deny network access to specific devices through the use of Blacklists blocking of traffic that matches a rule and Whitelists allow traffic that matches a rule The IP filter entry will match either source or destination address in the packet That is if either the source or destination IP address falls within the address range specified in the rule the packet is matched and will be discarded Blacklist or allowed Whitelist If the protocol is specified the protocol of the packet must also match If the protocol is TCP or UDP the source or destination TCP UDP can also be inspected If the IP address and protocol matches and the source or destination por
31. 1 Both Current Radio Channel See section 3 2 Selecting a Channel for channel details 5002 Both Number Wireless Interfaces configured includes Virtual Interfaces wit wi10 5010 Both Wireless Adaptor wi0 Link Status 5011 Both Wireless Adaptor wi0 Link Status Inverted 5012 Both Wireless Adaptor wi0 Number Associated Stations for this interface 5013 AP Only Wireless Adaptor wi0 Points to the starting register of the AP s Station List First interface wi0 will always start at 5200 and dynamically enter data depending on the number of STA s Remaining interfaces wit wi10 will be entered after wi0 data Register 5023 5033 etc will indicate starting location for each interface 5014 STA Only Wireless Adaptor wi0 RSSI amp BGND of Rx message from AP e g Hex 5F5D 5F for RSSI and 5D for BGND Convert value from hex to dec and add a e g 5F 95dB 5015 STA Only Wireless Adaptor wi0 Transmit Data Rate from the Access Point 5016 STA Only Wireless Adaptor wi0 MAC Address of the Access Point 5020 5026 As per 5010 5016 As per registers 5010 5016 but for the next Wireless Adaptor wit 5030 5036 As per 5010 5016 As per registers 5010 5016 but for the next Wireless Adaptor wi2 5040 5046 As per 5010 5016 As per registers 5010 5016 but for the next Wireless Adaptor wi3 OIG As per 5010 5016 As per registers 5010 5016 but for the next Wireless Adaptor wit 0 5200 AP Only RSSI of the Client STA
32. 2 168 0 200 1000 0 2 1 8 02 Read Discretes 1 6 192 168 0 123 1000 0 3 1 8 15 WriteCois E 1 5 192 168 0 200 1000 0 Unit B is configured with Modbus TCP Server enabled and Device ID 1 Unit C is configured as shown above e The first will write the register 4300 Local Digital Input to server IP address 192 168 0 200 Unit B Device ID 1 register 4320 Local Digital output e The second mapping shows a Modbus read command of 8 Discretes starting at register 1 Destination Reg on Device ID 6 connected to IP address 192 168 0 123 it self and store the values at register 1 locally e The third mapping shows the Modbus write command Write Coils which is writing the local 8 O s starting at register 1 across to Server IP address 192 168 0 200 Device ID 5 destination reg 1 The configuration of unit B is shown below accessible via the I O Transfer configuration page It can be seen that Modbus TCP Client has been enabled with a 500msec scan rate meaning that there will be a 500msec delay between each of the mappings directed at any server The Reset Registers on Comms Fail option is enabled with a timeout of 60 seconds indicating that any of the registers at unit B will be reset if a successful Modbus transaction involving that register has not been executed in the last 60 seconds The Modbus TCP to RTU Gateway at B must also be enabled see section 3 13 3 Modbus TCP to RTU Gateway to allow Modbus communicati
33. 6 www cooperbussmann com BussmannWirelessResources 3A1582Rev1 6 Cooper Bussmann Wireless Ethernet 8 Device Server BU 945U E 802 11 DSSS User Manual RS232 RS485 Serial Gateway Serial Gateway Mode Server Module will wait for a connection to be initiated by a remote Client Client Module will automatically attempt to connect to the specified remote server Multicast Allows point to multi point serial transfer All members of the group will receive serial transmissions made by any other member of the Multicast group Modbus Allows a serial Modbus RTU Client Master to connect with a single Ethernet Modbus TCP Server Slave Character Timeout Enter the maximum delay in msec between received serial characters before packet is sent via network Packet Size The number of received bytes that will be buffered before a packet is sent via the network Listen Port Server Server Only Enter the TCP port number on which the server must listen for incoming connections The standard TELNET port is 23 Remote Device Port Client Client only Enter the TCP port number of the remote server i e the remote port to automatically connect to Remote Device IP Address Client Client only Enter the IP Address of the remote server i e the remote IP Address to automatically connect to Multicast Group Port Enter the UDP port number that all members of the group will use i e all group members should use the same port number Multicast Group IP Ent
34. 85 then lt enter gt to send the ping command The PC will reply with an acknowledgement of your command and if your BU 945U E is correctly configured your reply will look something like this The screen shot below shows the response of the ping 192 168 0 185 command cx Command Prompt ojx Microsoft Windows XP Version 5 1 2666 Py CC Copyright 1985 2661 Microsoft Corp C gt ping 192 168 6 185 Pinging 192 168 060 185 with 32 bytes of data nag from 192 168 606 185 bytes 32 time 1ms TIL 64 eply from 192 168 060 185 bytes 32 time 2ms TTL 64 eply from 192 168 606 185 bytes 32 time 2ms TTL 64 eply from 192 168 060 185 bytes 32 time 2ms TTL 64 Ping statistics for 192 168 6 185 Packets Sent 4 Received 4 Lost z loss Approximate round trip times in milli seconds Minimum ims Maximum 2ms Average ims CN 62 www cooperbussmann com BussmannWirelessResources 3A1582Rev1 6 Cooper Bussmann Wireless Ethernet 8 Device Server BU 945U E 802 11 DSSS User Manual C gt ping t 192 168 0 185 Pinging 192 168 606 185 with 32 bytes of data eply from 192 168 6 185 bytes 32 time 2ms TTL 64 eply from 192 168 060 185 bytes 32 time 2ms TTL 64 eply from 192 168 6 185 bytes 32 time 2ms TTL 64 eply from 192 168 6 185 bytes 32 time 2ms TTL 64 eply from 192 168 060 185 bytes 32 time 2ms TTL 64 eply from 192 168 6 185 bytes 32 time ims TTL 64 eply from 192 168 606 185 bytes 32 time 2ms TTL 64 eply fr
35. DS The BU 945U E offers very powerful WDS configuration allowing for a mesh network with self healing functionality Alternatively fixed AP to AP links can be configured for optimized throughput Each BU 945U E Access Point supports up to 10 separate interfaces for WDS links to other devices Each WDS interface can be either a bridge or router interface refer section 1 1 Network Topology for more information on bridge vs router If you need a simple repeater network use a bridge interface 32 www cooperbussmann com BussmannWirelessResources 3A1582Rev1 6 Cooper Bussmann Wireless Ethernet 8 Device Server BU 945U E 802 11 DSSS User Manual A WDS bridge interface allows traffic to be bridged to another Access Point on the same IP network WDS bridge interfaces do not require additional IP Address configuration as they are bridged with the standard wireless interface that is used for connections to associated clients All of the WDS interfaces on the one Access Point may be bridged if required WDS bridge interfaces have the advantage that redundant paths are permitted when using the bridge Spanning Tree Protocol see section 3 10 Spanning Tree Algorithm Redundancy thus behaving as a self healing mesh network Bridged networks are also not as configuration intensive as routed networks Since WDS bridge interfaces generally do not require IP address configuration they inherit the IP address of the standard wireless interface A WDS
36. DS entry above specifies the WDS link to Site D In the example Site D is part of the same network structure as Site B therefore we wish to have the WDS interface link to Site D bridged with the default interface Because we don t specify a router IP address for the third entry the BU 945U E automatically bridges this interface with the default wireless interface So in this example Site B has a total of three IP addresses 192 168 5 3 for the default interface 169 254 0 3 for the WDS link to Site A and 169 254 5 3 for the WDS link to Site C Note We choose to always use the same host address of 3 for unit B on all of its interfaces regardless of the network address Routing Rules Add Entry Delete Entry Name Destination Netmask Gateway Enabled 1 Route to Site A 192 168 0 0 255 255 255 0 169 254 0 2 v 2 Route to Site C 192 168 6 0 255 255 255 0 169 254 5 4 v The routing rules for unit B are shown above e The routing rule for directing traffic to unit A can be seen to specify 192 168 0 0 as the destination address the network address of unit A because the last byte is zero this refers to a route to the network 192 168 0 X as opposed to a route to an individual host The same rule specifies the address 169 254 0 2 as the gateway address this is the WDS Router IP address that Site A has been configured with for its WDS link to Site B So this routing rule effectively tells the BU 945U E that any
37. E Network Statistic Registers aaa 61 address to match the local network 22 4 5 TESTING RADIO PATHS 1 0 cece eee 62 3 4 QUICK START ccc ccc ccceccccceeebbbennn 23 AO UMILIINES lt p aan PA Aa 62 3 5 NETWORK CONFIGURATION 00000 e cee eee 24 Ping La 62 Network Settings Webpage Fields 00000 25 i1 AA AA AA 64 Secun Menu swat KGG KA kA EN Er tere kaan kA KNA 26 AD aoe ie Ela al E ANA ALAALA nad 64 3 6 NORMAL OPERATION 2 28 Route LL 65 Transparent Bridge Operation 0 0 0 0 cee 28 CHAPTER 5 SPECIFICATIONS 0ceeeeeeee 66 Router Operation see ee eee eee eee eens 28 APPENDIX A FIRMWARE UPGRADES 68 sate T DA E aan Ha Web based Upgrade a akakanasakananananananananant 68 3 8 DHCP CLIENT CONFIGURATION Jr mamamana E g3 3 9 DHCP SERVER CONFIGURATION a 31 APPENDIX C POWER CONVERSION 005 73 3 10 DNS SERVER CONFIGURATION 0 0 00 cece eee 31 Power Conversion asserere 73 3 11 SPANNING TREE ALGORITHM REDUNDANCY 31 APPENDIX D IPERF THROUGHPUT TEST EXT 74 3 12 MULTIPLE AP REPEATER MESH NETWORK 32 APPENDIX E GNU FREE DOC License 78 Example Extending range using WDS 34 Terms and Conditions cccccccccccceeeeees 78 Example Roaming with WDS Access Points 35 NO WARRANTY ccc ccccccee cece cee eee eee 80 4 www cooperbus
38. EHOST MODEM DCE HOST i j DB9 DB9 DB9 DB9 another DCE hosts or modem are detailed to the right ere penne oo Pg 12 www cooperbussmann com BussmannWirelessResources 3A1582Rev1 6 Cooper Bussmann Wireless Ethernet 8 Device Server BU 945U E 802 11 DSSS User Manual DB9 Connector Pinouts Pin Name Direction Function 1 DCD Out Data carrier detect 2 RD Out Transmit Data Serial Data Output from DCE to DTE 3 TD In Receive Data Serial Data Input from DTE to DCE 4 DTR In Data Terminal Ready 5 SG Signal Ground 6 DSR Out Data Set Ready always high when unit is powered on 7 RTS In Request to Send 8 CTS Out Clear to send 9 RI sis Ring indicator RS485 Serial Port The RS485 port provides for communication between the BU 945U E unit and its host device using a multi drop cable Up to 32 devices may be connected in each multi drop network As the RS485 communication medium is shared only one of the units on the RS485 cable may send data at any one time Thus communication protocols based on the RS 485 standard require some type of arbitration RS485 is a balanced differential standard but it is recommended that shielded twisted pair cable be used to interconnect modules to reduce potential RFI It is important to maintain the polarity of the two RS485 wires An RS485 network should be wired as indicated in the diagram below and terminated at each end of the network with a 120 ohm resistor On board 120 ohm resistors are pro
39. IMPLIED INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU SHOULD THE PROGRAM PROVE DEFECTIVE YOU ASSUME THE COST OF ALL NECESSARY SERVICING REPAIR OR CORRECTION 12 IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY COPYRIGHT HOLDER OR ANY OTHER PARTY WHO MAY MODIFY AND OR REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE BE LIABLE TO YOU FOR DAMAGES INCLUDING ANY GENERAL SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES 80 www cooperbussmann com BussmannWirelessResources 3A1582Rev1 6 Notes Cooper Bussmann Wireless Ethernet 8 Device Server BU 945U E 802 11 DSSS User Manual 3A1582Rev1 6 www cooperbussmann com BussmannWirelessResources 81 Customer Assistance Customer Satisfaction Team Application Engineering Available to answer questions regarding Cooper Technical assistance is available to all customers Bussmann products amp services Monday Friday Staffed by degreed engineers
40. MB Sec connection Other conditions indicating a fault are described in Chapter Four DIAGNOSTICS 3 2 Selecting a Channel 802 11 900 MHz Channels The BU 945U E conforms to the IEEE 802 11 Wireless LAN specification and supports various channels depending on regulations within the country of use If operating in the US Canada the frequency range is 902 to 928MHz and the available channels are e 9 x non overlapping 1 25MHz channels e 9 x partially overlapping 2 5MHz channels e 4x non overlapping 5MHz channels e 4 x overlapping 10MHz channels e 2 x overlapping 20MHZz channels If operating in Australia the frequency range is 915 928MHz and the available channels are e 4x non overlapping 1 25MHz channels e 4x partially overlapping 2 5MHz channels e 3 x overlapping 5MHz channels e 1 x 10MHZ channel 3A1582Rev1 6 www cooperbussmann com BussmannWirelessResources 17 Cooper Bussmann Wireless Ethernet 4 Device Server BU 945U E 802 11 DSSS User Manual If operating in New Zealand the frequency range is 921 928MHz and the available channels are e 2x non overlapping 1 25MHZz channels e 1 x 2 5MHz channel e 1 x 5MHZ channel If operating in Hong Kong the frequency range is 922 925 MH7 and the available channels are e 2x non overlapping 1 25MHz channels e 1 x 2 5MHz channel Regions will only show the available channels for that location See below for a diagram of the frequency ranges and channels 900 MHz Channels Channels
41. Software Foundation may publish revised and or new versions of the General Public License from time to time Such new versions will be similar in spirit to the present version but may differ in detail to address new problems or concerns Each version is given a distinguishing version number If the Program specifies a version number of this License which applies to it and any later version you have the option of following the terms and conditions either of that version or of any later version published by the Free Software Foundation If the Program does not specify a version number of this License you may choose any version ever published by the Free Software Foundation 10 If you wish to incorporate parts of the Program into other free programs whose distribution conditions are different write to the author to ask for permission For software which is copyrighted by the Free Software Foundation write to the Free Software Foundation we sometimes make exceptions for this Our decision will be guided by the two goals of preserving the free status of all derivatives of our free software and of promoting the sharing and reuse of software generally NO WARRANTY 11 BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE THERE IS NO WARRANTY FOR THE PROGRAM TO THE EXTENT PERMITTED BY APPLICABLE LAW EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND OR OTHER PARTIES PROVIDE THE PROGRAM AS IS WITHOUT WARRANTY OF ANY KIND EITHER EXPRESSED OR
42. U 945U E 192 168 0 1XX where XX is the last two digits of the serial number e Enter the username user and default password user Altemate DNS server BU 945U E Configuration and Diagnostics Dipswitch setting at boot RUN Mode Dipswitch setting current RUN Mode Ethemet MAC Address 00 12 AF 00 3D 84 Wireless MAC Address 00 12 AF 00 3D 86 Owner Contact Description Location Owner Contact Description Location Model Radio Country Serial Number Hardware Revision Firmware Version Kernel Version Figure 1 3A1582Rev1 6 BU 945U E 900X US 04101227918 12a Version 1 0 45 Thu Apr 21 11 54 44 EST 2011 Version 100 Thu Apr 21 11 52 43 EST 2011 www cooperbussmann com BussmannWirelessResources 21 Cooper Bussmann Wireless Ethernet 8 Device Server BU 945U E 802 11 DSSS User Manual To resume normal configured operation when Configuration is complete switch Factory Default dip switch on the BU 945U E to RUN and cycle power Note Security Certificates Configuration of the BU 945U E uses an encrypted link https The security certificate used by the BU 945U E is issued by Cooper Bussmann and matches the IP address 192 168 0 100 When you first connect to the BU 945U E your web browser will issue a warning that Cooper Bussmann is not a trusted authority Ignore this warning and proceed to the configuration web page Internet Explorer 7 has an additional address c
43. With the Modbus Function the serial data is encapsulated within a TCP IP data frame and made available on the Ethernet network Both BU 945U E serial ports and the hard wired Ethernet port can be configured to communicate completely separate data streams which can all be communicating at the same time Some of the possible Serial Gateway topologies are illustrated below Access Client Access Point Client Point RS232 Device RS232 Device RS485 Device i A RS232 n A R5232 rs232 Server Client Server Client Server Client Server Client Access Point Client Access Point RS485 Client Multicast Group Modbus RTU to TCP Serial Gateway RS485 Multicast RS232 P Multicast sail LAN Aa M of COT J odbus Serial Modbus i Device i R Raz Ng Client Multicast Device J Modbus TCP Server Slave PAS ora Cee ey ee ee er ac AA O RA ee ae Ee l There are software packages available i e SeriallP Redirector by Tactical Software that can create a virtual serial port on a PC This virtual serial port can be configured to connect to a BU 945U E serial port Standard programs can then be used to access this serial port as if it were actually connected to the PC Alternatively HyperTerminal may be used to connect to a serial port on the BU 945U E When creating the HyperTerminal connection select Connect Using TCP IP Winsock
44. a register may be accessed as a discrete value The main use for the general purpose 1 0 registers is for intermediate storage i e when transferring I O from one Modbus Slave device to another Also provided is the status of the onboard digital I O as well as the status of the wireless link and any serial or TCP connections An inverted status of registers 4300 4307 are also available and can be found at register locations 4370 4377 The status register will contain the value FFFF hex for ON and 0000 hex for OFF Registers Purpose 1 4299 General purpose 1 0 registers read write 4300 On board Digital Input value read only 4301 Link Status read only 4302 Serial Gateway RS232 Connection Status 4303 Serial Gateway RS485 Connection Status 4304 TCP RTU RS232 Connection Status 4305 TCP RTU RS485 Connection Status 4306 TCP RTU Modbus Server Connection Status 4307 Multicast Pipe Connection Status 4310 TCP RTU RS232 Number of Connections 4311 TCP RTU RS485 Number of Connections 4312 TCP RTU Modbus Server Number of Connections 4320 On board Digital Output value read write 4378 4999 Reserved for future use Modbus TCP Client Master enables the BU 945U E to connect to one or more Modbus TCP Servers Slaves All Modbus Master messages are directed to from the onboard 1 0 registers depending on configuration described below The Modbus TCP Client may also poll Modbus RTU i e serial devices connected to
45. acilitate surfing the Web with alpha versus numeric addresses A DNS server converts a name like mywebsite com to a series of numbers like 107 22 55 26 Every website has its own specific IP address on the Internet DSL Digital Subscriber Line Various technology protocols for high speed data voice and video transmission over ordinary twisted pair copper POTS Plain Old Telephone Service telephone wires www cooperbussmann com BussmannWirelessResources 69 Cooper Bussmann Wireless Ethernet 8 Device Server BU 945U E 802 11 DSSS User Manual Encryption Key An alphanumeric letters and or numbers series that enables data to be encrypted and then decrypted so it can be safely shared among members of a network WEP uses an encryption key that automatically encrypts outgoing wireless data On the receiving side the same encryption key enables the computer to automatically decrypt the information so it can be read Encryption keys should be kept secret Firewall A device or computer program that keeps unauthorized users out of a private network Everything entering or leaving a system s internal network passes through the firewall and must meet the system s security standards in order to be transmitted Often used to keep unauthorized people from using systems connected to the Internet Hub A multiport device used to connect PCs to a network via Ethernet cabling or via 802 11 Wired hubs can have numerous ports and can transmit data at spee
46. ailable for connection This list is only available on Clients and only available at start up of the module or by selecting Background Scanning on the radio page Site Survey SSID BSSID CHAN RATE S N INT CAPS BU 945U 06 12 af 00 3d 86 15 6 75M 64 96 100 ESs WME ATH Site Survey SSID The Service Set Identifier or Network Name used to identify a particular network BSSID BSSID is the MAC Medium Access Control address of the AP Access Point CHAN Channel What radio channel is being used RATE Maximum Radio Data Rate S N Signal to Noise Ratio INT Beacon Interval CAPS Capabilities Ref 802 11 Standard 58 www cooperbussmann com BussmannWirelessResources 3A1582Rev1 6 Cooper Bussmann Wireless Ethernet 8 Device Server BU 945U E 802 11 DSSS User Manual 4 3 Statistics The Statistics webpage is used for advanced debugging of BU 945U E This webpage details the state of the BU 945U E and performance information This page is typically useful to Cooper Bussmann technical support personnel in diagnosing problems with the module Note that when updating the Statistics webpage it is necessary to hold down the lt ctrl gt key while pressing the refresh button Otherwise the information will not be updated Network Traffic Analysis There are many devices and PC programs that will analyze performance of an Ethernet network Freely available programs such as Ethereal provide a simple cost effective means for more advanced analysis By monitori
47. an check this data throughput using a number of different software tools i e ftp file transfer Iperf Qcheck etc All of the above applications measure the raw data throughput and from this we can determine the amount of interference from the measured and calculated data throughput levels The preferred application is called Iperf which can be downloaded from http sourceforge net projects ipert See Appendix D IPerf Data Throughput Test for a detailed procedure on how to use Iperf to check radio data throughput 4 6 Utilities Ping Ping is a basic Internet program that lets you verify that a particular IP address exists and can accept requests Ping is used diagnostically to ensure that a host computer you are trying to reach is actually operating If for example a user can t ping a host then the user will be unable to send files to that host Ping operates by sending a packet to a designated address and waiting for a response The basic operation of Ping can be performed by following these steps in any Windows operating system Click on the Start Menu and select Run Type in cmd and enter you should then see the command screen come up There will be a certain directory specified unique to your own PC with a flashing cursor at the end At the cursor type the word ping leaving a space and the default IP address for the BU 945U E at first start up This command would be written as ping 192 168 0 1
48. apply it to your programs too When we speak of free software we are referring to freedom not price Our General Public Licenses are designed to make sure that you have the freedom to distribute copies of free software and charge for this service if you wish that you receive source code or can get it if you want it that you can change the software or use pieces of it in new free programs and that you know you can do these things To protect your rights we need to make restrictions that forbid anyone to deny you these rights or to ask you to surrender the rights These restrictions translate to certain responsibilities for you if you distribute copies of the software or if you modify it For example if you distribute copies of such a program whether gratis or for a fee you must give the recipients all the rights that you have You must make sure that they too receive or can get the source code And you must show them these terms so they know their rights We protect your rights with two steps 1 copyright the software and 2 offer you this license which gives you legal permission to copy distribute and or modify the software Also for each author s protection and ours we want to make certain that everyone understands that there is no warranty for this free software If the software is modified by someone else and passed on we want its recipients to know that what they have is not the original so that any problems introduced by othe
49. ased on the Program on a volume of a storage or distribution medium does not bring the other work under the scope of this License 3 You may copy and distribute the Program or a work based on it under Section 2 in object code or executable form under the terms of Sections 1 and 2 above provided that you also do one of the following a Accompany it with the complete corresponding machine readable source code which must be distributed under the terms of Sections 1 and 2 above on a medium customarily used for software interchange or b Accompany it with a written offer valid for at least three years to give any third party for a charge no more than your cost of physically performing source distribution a complete machine readable copy of the corresponding source code to be distributed under the terms of Sections 1 and 2 above on a medium customarily used for software interchange or c Accompany it with the information you received as to the offer to distribute corresponding source code This alternative is allowed only for non commercial distribution and only if you received the program in object code or executable form with such an offer in accord with Subsection b above The source code for a work means the preferred form of the work for making modifications to it For an executable work complete source code means all the source code for all modules it contains plus any associated interface definition files plus the scripts used
50. ation DNS Domain Name Service allows devices to be given human readable names in additions to their IP address This makes identification of devices hosts simpler and makes it possible to identify devices which have been automatically assigned their IP address by a DHCP server See section 3 8 DHCP Server Configuration DNS is the system which translates internet names such as www cooperbussmann com to IP Addresses The Cooper Bussmann BU 945U E can act as a DNS Server for a local network Name to IP address mapping are automatically updated by the built in DHCP server when it issues an IP address to a client unit For the DNS Server configuration to be effective Each DNS Client must be configured with the address of this DNS server as either the primary or secondary DNS secondary DNS is only used if there is no response from the primary DNS Normally this is done by setting the primary DNS field of the DHCP server configuration to the wireless IP address This address is then provided to client units to use as their primary DNS server address when the DHCP server issues an IP address The DNS Server is configured using the following settings Enabled Tick this box to enable the DNS Server Domain Name This is a common suffix applied to the name of each device in the network If your network is part of a larger network this would be assigned to you by the relevant naming authority If your network is stand alone this field is set to an
51. ation of a Bridge and Router Transparent Bridge Operation A bridge connects several Ethernet networks together and makes them appear as a single Ethernet network to higher protocol layers By default the BU 945U E is configured as a transparent bridge When a transparent bridge is started it learns the location of other devices by monitoring the source address of all incoming traffic Initially it forwards all traffic between the wired Ethernet port and the wireless port however by keeping a list of devices heard on each port the transparent bridge can decide which traffic must be forwarded between ports it will only transfer a message from the wired port to the wireless port if it is required A bridge will forward all Broadcast traffic between the wired and wireless ports If the wired network is busy with broadcast traffic the radio network on the BU 945U E can be unnecessarily overburdened Use filtering to reduce broadcast traffic sent over the radio Refer Section 3 13 Wireless Message Filtering for how to configure a filter By default a transparent bridge does not handle loops within the network There must be a single path to each device on the network Loops in the network will cause the same data to be continually passed around that loop Redundant wireless links may be set up by enabling the bridge Spanning Tree Protocol see section 3 10 Spanning Tree Algorithm Redundancy for more details Router Operation A rout
52. ault Ethernet address for the BU 945U E is 192 168 0 1XX where XX are the last two digits of the serial number check the label on the back of the module Method 2 Requires temporarily changing the IP address in the BU 945U E via an RS232 connection such that it is accessible on your network without having to change your PC network settings When connected you can change the modem network settings to match that of your network 20 www cooperbussmann com BussmannWirelessResources lal L Test LAN Properties MT General Advanced Connect using E9 ADMtek AN983 10 100 PCI Adapter This connection uses the following items v JE File and Printer Sharing for Microsoft Networks S vi Saos Packet Scheduler 4 v Intemet Protocol TCP IP lt gt l Install Uninstall Properties Description Allows your computer to access resources on a Microsoft network Show icon in notification area when connected Notify me when this connection has limited or no connectivity s lt OK Cancel 3A1582Rev1 6 Cooper Bussmann Wireless Ethernet 8 Device Server BU 945U E 802 11 DSSS User Manual Method 1 Set PC to same network as BU 945U E Connect the Ethernet cable between unit and the PC configuring the module e Set the Factory Default Switch to the SETUP position This will always start the BU 945U E with Ethernet IP address 192 168 0 1XX subnet mask 255 255 255 0 gateway IP 192 168 0
53. canizing seal can be easily removed Where antennas are mounted on elevated masts the masts should be effectively earthed to avoid lightning surges For high lightning risk areas approved Cooper Bussmann surge suppression devices such as the BU CSD SMA 2500 or BU CSD N 6000 should be fitted For proper UV protection Electrical between the module and the antenna If using non Cooper Bussmann Tape should then be wrapped over surge suppression devices then the devices must have a TURN ON the Vulcanising Tape voltage of less than 90V If the antenna is not already shielded from lightning strike by an adjacent earthed structure a lightning rod may be installed above the antenna to provide shielding Omni directional Antennas An omni directional antenna transmits radio power in all directions and is easy to install and use The Dipole antenna with its integral 15ft bm of coax cable and does not require any additional hardware however a coax cable and mounting kit is required with the Collinear antenna All omni directional antennas should be mounted vertically preferably 1 wavelength away see drawing below for distances from a wall or mast and at least 3ft 1m from the radio module to obtain maximum range 1 wavelength q 0 vel 900 MHz 33 cm 2 4 GHz 13 cm 5 GHz 6 cm Omni Antenna WEATHERPROOF CONNECTORS WITH SURGE 3M 23 TAPE ARRESTOR OPTIONAL NG GND Yagi STRESS RELIEF
54. ce This device complies with Part 15 247 of the FCC Rules Operation is subject to the following two conditions 1 This device may not cause harmful interference and 2 This device must accept any interference received including interference that may cause undesired operation This device must be operated as supplied by Cooper Bussmann Any changes or modifications made to the device without the written consent of Cooper Bussmann may void the user s authority to operate the device End user products that have this device embedded must be installed by experienced radio and antenna personnel or supplied with non standard antenna connectors and antennas available from vendors specified by Cooper Bussmann Please contact Cooper Bussmann for end user antenna and connector recommendations Notices Safety Exposure to RF energy is an important safety consideration The FCC has adopted a safety standard for human exposure to radio frequency electromagnetic energy emitted by FCC regulated equipment as a result of its actions in Docket 93 62 and OET Bulletin 65 Edition 97 01 FCC Notice e Part 15 This device has been tested and found to comply with the limits for a Class B digital device pursuant to Part15 of the FCC rules Code of Federal Regulations 47CFR Part 15 Operation is subject to the condition that this device does not cause harmful interference e Notice any changes or modifications not expressly approved by Cooper Bussmann could vo
55. dBm 12Mbps 87dBm 18Mbps 83dBm 24Mbps 83dBm 36Mbps 74dBm 48Mbps 71dBm 54Mbps 2 x Female SMA coaxial Two connectors for signal diversity or High gain receive antenna Configurable 6 to 54Mb s BU 945U E Auto function determines fastest rate possible DB9 female DCE RTS CTS DTR DCD hardware signals provided 2 Pin terminal block Max distance 4000 1 2km Configurable 7 or 8 data bits Stop start parity bits 1200 2400 4800 9600 14400 19200 38400 57600 76800 115200 www cooperbussmann com BussmannWirelessResources 3A1582Rev1 6 Cooper Bussmann Wireless Ethernet 8 Device Server BU 945U E 802 11 DSSS User Manual System Parameters System Address ESSID 1 to 31 Character text string Wireless Data Encryption WEP 64bit and 128bit WPA PSK TKIP WPA PSK AES WPA2 PSK AES WPA PSK WPA2 PSK WPA Enterprise User Configuration e Via embedded web page e Via RS232 commands Diagnostics LEDs Power OK Ethernet Link Activity 100mb s Radio Link RX Rx Weak Signal TX Serial RX TX Digital 1 0 Input Output status Other e RSSI measurement in dBm e Connectivity Information e System Log file 3A1582Rev1 6 www cooperbussmann com BussmannWirelessResources 67 Cooper Bussmann Wireless Ethernet 8 Device Server BU 945U E 802 11 DSSS User Manual APPENDIX A FIRMWARE UPGRADES Determine which firmware version is present in the module to be upgraded by viewing the index webpage of the module
56. data throughput will also be reduced For an indication of the data throughput levels used with different channel bandwidths see the following BU 945U E Radio Data Throughput table 18 www cooperbussmann com BussmannWirelessResources 3A1582Rev1 6 Cooper Bussmann Wireless Ethernet 8 Device Server BU 945U E 802 11 DSSS User Manual Radio Throughput Below is a table showing the maximum TCP IP throughput based on channel selection and receiver signal level There are five channel bandwidths 20 10 5 2 5 amp 1 25MHz These throughput estimations are based on perfect radio conditions i e little to no outside radio interference present while data is being passed BU 945U E Radio Data Throughput Data Rate in Mbps 900Mhz Signal Strength 20MHz 10MHz 5MHz 2 5MHz 1 25MHz 720Bm 22 0 11 0 5 5 2 8 1 4 75dBm 20 0 10 0 5 0 2 5 1 3 81dBm 17 0 8 5 4 3 2 1 1 1 84dBm 11 0 5 5 2 8 1 4 0 7 88dBm 9 0 4 5 2 3 1 1 0 6 91dBm 6 0 3 0 1 5 0 75 0 38 90dBm 5 5 2 8 1 4 0 69 0 34 91dBm 4 5 2 3 da 0 56 0 28 92dBm 3 0 1 5 0 75 0 38 0 19 91dBm 2 0 1 0 0 5 0 25 0 13 93dBm 1 0 0 50 0 25 0 13 0 06 95dBm 0 5 0 25 0 13 0 06 0 03 Throughput and Repeaters It should also be noted that if using repeaters to extend the range there will be a reduction in throughput for each repeater hop The following table shows the drop in throughput for each hop and for each of the channel widths Data Throughput Based on Repeater Hops
57. ddresses After configuring select Save to Flash and Reset Radio Data Rate and Channel will be set to Auto Radio Transmit Power will be set to maximum and any previous configuration of unrelated parameters will not be modified and will still apply 3A1582Rev1 6 www cooperbussmann com BussmannWirelessResources 23 Cooper Bussmann Wireless Ethernet 8 Device Server BU 945U E 802 11 DSSS User Manual 3 5 Network Configuration You can view or modify Ethernet network parameters by selecting the Network menu When prompted for username and password enter user as the username and user as the password in the password field This is the factory default See section 3 17 Module Information Configuration to change If you have forgotten the IP address or password the Factory Default switch may be used to access the existing configuration Refer to previous section above for this procedure The Network Configuration page allows configuration of parameters related to the wired and wireless Ethernet interfaces In general IP address selection will be dependent upon the connected wired Ethernet device s before connecting to an existing LAN consult the network administrator A system of BU 945U Es must have at least one Access Point configured as a master with one or more Clients All BU 945U Es should be given the same System Address ESSID and Radio Encryption settings For further information and examples on wirele
58. ds associated with wireless transmissions If communicating with a device that does not support bursting the modem will drop back to non bursting mode Selecting this item stops a Client device from sending probe request messages when it is searching for an access point to connect to Instead the client waits for a beacon transmission from the access point www cooperbussmann com BussmannWirelessResources 29 Cooper Bussmann Wireless Ethernet 8 Device Server BU 945U E 802 11 DSSS User Manual Radio Mode Background Scanning STA only Max Distance Save Changes Save Changes and Reset Channel Selection BU 945U E Only Supports the 802 11 Standard Enabling this option will allow a modem to periodically rescan for Access Points keeping the connectivity page up to date with current system information Default is off Note Enabling this option will slightly increase overall radio communications Rescan time is fixed at 300sec 5min Configure the maximum distance the radio signal is expected to travel This allows the modem to Compensate for the flight time of messages as they pass from the transmitter to the receiver and as the acknowledgement messages are returned Setting this value larger will cause a small reduction in throughput Setting this value too small will cause communications problems over longer distances Default distance is 20km Save changes to non volatile memory Changes will not take effect until module is r
59. ds on what the Program does 1 You may copy and distribute verbatim copies of the Program s source code as you receive it in any medium provided that you conspicuously and appropriately publish on each copy an appropriate copyright notice and disclaimer of warranty keep intact all the notices that refer to this License and to the absence of any warranty and give any other recipients of the Program a copy of this License along with the Program You may charge a fee for the physical act of transferring a copy and you may at your option offer warranty protection in exchange for a fee 78 www cooperbussmann com BussmannWirelessResources 3A1582Rev1 6 Cooper Bussmann Wireless Ethernet 8 Device Server BU 945U E 802 11 DSSS User Manual 2 You may modify your copy or copies of the Program or any portion of it thus forming a work based on the Program and copy and distribute such modifications or work under the terms of Section 1 above provided that you also meet all of these conditions a You must cause the modified files to carry prominent notices stating that you changed the files and the date of any change b You must cause any work that you distribute or publish that in whole or in part contains or is derived from the Program or any part thereof to be licensed as a whole at no charge to all third parties under the terms of this License c If the modified program normally reads commands interactively when run you must cause it when started
60. ds ranging from 10 Mbps to multi Gigabyte speeds per second A hub transmits packets it receives to all the connected ports A small wired hub may only connect 4 computers a large hub can connect 48 or more Hz Hertz The international unit for measuring frequency equivalent to the older unit of cycles per second One megahertz MHz is one million hertz One gigahertz GHz is one billion hertz The standard US electri cal power frequency is 60 Hz the AM broadcast radio frequency band is 535 1605 kHz the FM broadcast radio frequency band is 88 108 MHz and wireless 802 11b g LANs operate at 2 4 GHz IEEE Institute of Electrical and Electronics Engineers New York www ieee org A membership organization that includes engineers scientists and students in electronics and allied fields It has more than 300 000 members and is involved with setting standards for computers and communications Infrastructure Mode An 802 11 setting providing connectivity to an AP As compared to Ad Hoc mode whereby 802 11 devices communicate directly with each other clients set in Infrastructure Mode all pass data through a central AP The AP not only mediates wireless network traffic in the immediate neighbourhood but also provides communication with the wired network See Ad Hoc and AP 1 0 Input Output The term used to describe any operation program or device that transfers data to or from a computer Internet Appliance A computer that
61. dustrial applications or life support systems without consulting Cooper Bussmann first 1 A radio license is not required in some countries provided the module is installed using the aerial and equipment configuration described in the BU 945U E Installation Guide Check with your local distributor for further information on regulations 2 Operation is authorized by the radio frequency regulatory authority in your country on a non protection basis Although all care is taken in the design of these units there is no responsibility taken for sources of external interference Systems should be designed to be tolerant of these operational delays 3 To avoid the risk of electrocution the aerial aerial cable serial cables and all terminals of the BU 945U E module should be electrically protected To provide maximum surge and lightning protection the module should be connected to a suitable earth and the aerial aerial cable serial cables and the module should be installed as recommended in the Installation Guide 4 To avoid accidents during maintenance or adjustment of remotely controlled equipment all equipment should be first disconnected from the BU 945U E module during these adjustments Equipment should carry clear markings to indicate remote or automatic operation E g This equipment is remotely controlled and may start without warning Isolate at the switchboard before attempting adjustments 5 The BU 945U E module is not suitable
62. e See PC Card Proxy Server Used in larger companies and organizations to improve network operations and security a proxy server is able to prevent direct com munication between two or more networks The proxy server forwards allowable data requests to remote servers and or responds to data requests directly from stored remote server data RJ 45 Standard connectors used in Ethernet networks RJ 45 connectors are similar to standard RJ 11 telephone connectors but RJ 45 connectors can have up to eight wires whereas telephone connectors have four Server A computer that provides its resources to other computers and devices on a network These include print servers Internet servers and data servers A server can also be combined with a hub or router 3A1582Rev1 6 Site Survey The process whereby a wireless network installer inspects a location prior to installing a wireless network Site surveys are used to identify the radio and client use properties of a facility so that access points can be optimally placed SSL Secure Sockets Layer A commonly used encryption scheme used by many online retail and banking sites to protect the financial integrity of transactions When an SSL session begins the server sends its public key to the browser The browser then sends a randomly generated secret key back to the server in order to have a secret key exchange for that session Sub Network or Subnet Found in larger networks these smal
63. e system address will communicate with each other The system address is a text string 1 to 31 characters in length Select a text string which identifies your system To force a client station to always connect to the same Access Point enter the MAC address of that Access Point in the Desired BSSID field Note that the ESSID of the Access Point must also match the configured ESSID of the client Select the desired radio Encryption level press Save Changes button and then select Configure on Security Page link Encryption key passphrase etc is entered on the Security Menu See section below for details Save changes to non volatile memory The module will need to be restarted before the changes take effect Save settings to non volatile memory and reboot BU 945U E Once the module has completed the reboot sequence all changes are in effect www cooperbussmann com BussmannWirelessResources 25 Cooper Bussmann Wireless Ethernet 8 Device Server BU 945U E 802 11 DSSS User Manual Security Menu Select the Radio Encryption level from the drop down menu on the Main index page and then press the Save Changes button The default setting is None Available encryption levels are None WEP 64 bit WEP 128 bit WPA PSK TKIP WPA PSK AES WPA2 PSK AES WPA PSK WPA2 PSK and WPA Enterprise IP Address 192 168 0 118 IP Subnet Mask 255 255 255 0 System Addres
64. e the range however may not prevent a reliable path A larger amount of obstruction can be tolerated for shorter distances For short distances it is possible to mount the antennas inside buildings An obstructed path requires testing to determine if the path will be reliable refer the section 6 of this manual Where it is not possible to achieve reliable communications between two BU 945U E modules then a third BU 945U E module may be used to receive the message and re transmit it This module is referred to as a repeater This module may also have a host device connected to it The BU 945U E unit has two antenna connections at the top of the module allowing two antennas to be fitted to the unit The left connector looking at the front labeled RX is connected only to the internal wireless receiver The right connector labeled TX RX is connected to both the transmitter and receiver Note Each antenna port has the option to enable disable the Receive and Transmit functionality by selecting Receive and Transmit Diversity on the radio page When only one antenna is used it must be connected to the TX RX connector 3A1582Rev1 6 www cooperbussmann com BussmannWirelessResources 9 Cooper Bussmann Wireless Ethernet 8 Device Server BU 945U E 802 11 DSSS User Manual Bench test and Demo System Setup Care must be taken with placement of antenna in relation to the radios and the other antennas Strong radio signals can saturate the receiv
65. efault value of RTS Threshold is 2346 which effectively disables RTS signalling as this value is larger than the maximum frame size Fragmentation Threshold Client Stations only The maximum transmission unit MTU of data over the radio If more than this number of bytes is input into the module it will be transmitted in more than one message or fragmented Enables Radio to receive on both antenna ports Diversity Enables Radio to transmit from both antenna ports Module does not transmit from both ports at the same time If needed i e broadcast messages the radio will toggle transmissions between the antenna ports Interference Mitigation should only be turn on Default is Off if using Demo Omni antennas or if there is a high level of background interference By enabling this option the radio will dynamically adjust radio parameters to help mitigate interference based on any background interference It will reduce the receiver sensitivity and so should only be enabled on paths with a high fade Margin and good signal quality etc This should be used to prevent unwanted eavesdroppers from detecting the radio network System Address SSID by passively listening to beacon transmissions from the Access point When disabled Access Points will not transmit the System Address openly in Beacon messages This is particularly useful in unencrypted radio networks Selecting this option can increase the data throughput by reducing the overhea
66. er hindering the overall radio communications When setting up a Bench test Demo or a short range system the following considerations should be taken into account for optimum radio performance and reduced signal saturation e f using Demo Omni antennas BU DG 900 1 and BU WH 900 it is recommended that only the Access Point be fitted with an antenna e f using Demo Omni antennas on each end 20dB coax attenuator must be connected in line with the coax cable e f using Demo Omni antennas modules and antennas must be kept a suitable distance from each other Check the receive signal strength on the Connectivity page of the module and ensure the level is not greater than 45dB Demo Whip antennas should not be used in the final installation as the maximum performance of the modem cannot be guaranteed If using a BU DG 900 1 antenna it is better to keep the antennas at least 3ft 1m away from the module so as to limit RF saturation Plant and Factory Installations Most installations in industrial plants and factories use single omni directional antennas Installations can suffer from multi path fading effects where multiple reflected radio signals adversely affect the signal strength This can be checked by moving the antenna a short distance 10cm or 4 inches if the signal increases significantly then there are multi path effects In a static installation where the radio path is not changing moving an antenna to the positio
67. er a valid Multicast IP Address identifying the group i e all group members should use the same Multicast Group IP Address Valid Multicast IP Addresses are in the range 224 0 1 0 to 238 255 255 255 Modbus Server Port This is the Server Port of the local server that a remote client will connect to Modbus Server IP Address This is the IP Address of the local server that a remote Client will connect to RS232 RS485 Modbus TCP RTU Converter Modbus Server TCP Port Port number used for the Modbus TCP Standard port is 502 Pauses Between Requests Enter the delay between serial request retries in milliseconds Response Timeout Enter the serial response timeout in milliseconds a serial retry will be sent if a response is not received within this timeout Connection Timeout Enter the TCP connection timeout in seconds if no Modbus TCP data is received within this timeout then the TCP connection will be dropped Set this field to zero for no timeout Maximum Request Retries Enter the maximum number of request retries performed serially Maximum Connections Enter the maximum number of simultaneous TCP connections to the server allowed Multicast Pipe Manager Previously it has been difficult to connect a single TCP device i e a Scada DCS system to multiple remote multicast serial devices Multicast Pipe allows this type of connection Example A Scada system that needs to communicate with multiple remote serial devices A mode
68. er between LAN A and LAN B 192 168 0 34 192 168 0 72 Access Point Bridge Client Router 192 168 0 34 192 168 102 17 LANA Alternately the Access Point could be configured as a Router the wireless link is then part of LAN B If more than two routers are required within the same radio network then routing rules may need to be configured refer section 3 12 Routing Rules for further details There is no limit to the number of Bridges in the same network although there is a limit of 128 Client units linked to any one Access Point 3A1582Rev1 6 www cooperbussmann com BussmannWirelessResources Cooper Bussmann Wireless Ethernet 8 Device Server BU 945U E 802 11 DSSS User Manual 1 2 Getting Started Quickly Most applications for the BU 945U E require little configuration The BU 945U E has many sophisticated features however if you don t require these features this section will allow you to configure the units quickly First read Chapter 2 Installation The BU 945U E requires an antenna and a power supply e Power the BU 945U E and make an Ethernet connection to your PC for further information on how to do this refer to section 3 3 Configuring the Unit for the first time e Set the BU 945U E address settings as per section 3 3 Configuring the Unit for the first time e Save the configuration the BU 945U E is now ready to use Before installing the BU 945U E bench test the system It is a
69. er joins separate IP sub networks together The router has different IP addresses on its wired and wireless ports reflecting the different IP addresses of the separate Ethernet networks All of the devices in these separate networks identify the router by IP address as their gateway to the other network When devices on one network wish to communicate with devices on the other network they direct their packets at the router for forwarding As the router has an IP address on each of the networks it joins it inherently knows the packet identity If the traffic directed at the router can not be identified for any of the networks to which it is connected the router must consult its routing rules as to where to direct the traffic to For details on configuring routing rules see section 3 12 Routing Rules 3 7 Radio Configuration The BU 945U E can be configured for different radio transmission rates A reduction in rate increases the reliable range transmission distance The factory default data rate settings are suitable for the majority of applications and should only be modified by experienced users The BU 945U E allows for a configurable fixed rate or an Auto radio transmission rate When a fixed rate is configured the radio transmission rate is never altered even under extremely poor conditions The Auto rate will automatically change the radio data rate to give the best throughput When a radio transmission is unsuccessful the BU 945U E will
70. erf 2 B8 2Nbindiperf c 192 168 606 134 w 65535 lient connecting to 192 168 060 134 TCP port 5061 CP window size 64 0 KByte 18281 local 192 168 6 17 port 1776 connected with 192 168 060 134 port 5601 ID Interval _ Transfer Bandwidth These results show the Bandwidth Throughput of the test as 16 2Mbits sec 3A1582Rev1 6 www cooperbussmann com BussmannWirelessResources 75 Cooper Bussmann Wireless Ethernet 4 Device Server BU 945U E 802 11 DSSS User Manual Figure 4 Using the Theoretical throughput calculations in Table 1 you can compare the results with the measured to give an indication of the difference between expected and measured Remembering that the theoretical calculations are best case possible results BU 245U E G BU 245U E A BU 945U E 20Mhz BU 905U E 54Mbps 27 Mbps 27Mbps 27 Mbps _ 11Mbps 5Mbps 5Mbps 5Mbps 1Mbps 500Kbps 500Kbps 500Kbps 200Kbps 80Kbps 100Kbps 40Kbps 78Kbps a ae ak E 19 2Kbps 7 8Kbps Table 1 In the command line for the Client mapping we established the Server IP address followed by the w 65535 w is the window size and the maximum TCPIP window size is 65535bytes Another entry that can be added is t lt seconds gt to run the test for a specific time period Example of this is in figure 5 where the same test is run for 30 seconds cx Command Prompt jperf 2 2 bin gt iperf c 192 168 6 134 w 65535 t 38 lient connecting t
71. ernet and Wireless IP addresses as 192 168 0 202 Connecting Two Separate Networks Together Wireless 192 168 102 54 Wireless 192 168 102 53 Eth 192 168 0 200 Sub 255 255 255 0 Access Point Client Router Bridge Eth 192 168 102 53 Sub 255 255 255 0 LAN A Configuration In this example network A is connected to the internet via a router at IP address 192 168 0 1 e Devices on LAN A that only require access to devices on LAN A and B should have their gateway IP address set to the BU 945U E Access Point as 192 168 0 200 e Devices on LAN A that must interact with devices on LAN A and B and the internet should set the internet router 192 168 0 1 as their gateway and must have a routing rule established for devices on Network B On PCs this may be achieved with the MS DOS command ROUTE For this example use ROUTE ADD 169 254 102 0 MASK 255 255 255 0 192 168 0 200 For more information on the DOS Route command see section 4 3 Utilities LAN B Configuration All devices on LAN B should be configured so their gateway IP address is that of the BU 945U E Access Point as 169 254 102 54 3A1582Rev1 6 www cooperbussmann com BussmannWirelessResources 55 Cooper Bussmann Wireless Ethernet 8 Device Server BU 945U E 802 11 DSSS User Manual Access Point Configuration e Connect straight through Ethernet cable between PC and BU 945U E e Ensure configuration PC and BU 945U E are setup to communicate on the
72. es 3A1582Rev1 6 Cooper Bussmann Wireless Ethernet 8 Device Server BU 945U E 802 11 DSSS User Manual e Enter the IP address for the BU 945U E into the Internet Explorer Address bar e g http 10 10 0 6 which is the IP address you temporarily configured with the ifconfig command e Enter the username user and default password user e You should now be connected to the main index page on the modem as per figure 1 above e From here connect to the Network page and change the Ethernet Interface and Wireless Interface IP addresses to 10 10 0 6 Switch the RUN SETUP switch back to RUN and press Save Changes and Reset button Note As the modem can be setup numerous ways e g Bridge Router etc this setup will allow the modem to appear on the 10 10 0 X network Any other configuration changes can be done after this initial connection see the following sections on configuration 3 4 Quick Start The BU 9ABU E tas a Oc Sta Configuration option which will cover most important parameters that are needed to get an initial Reset is required to activate settings connection This is the first stage of the module configuration For most applications no further con figuration is required For more Device Mode advanced applications the other Operating Mode Client Station Y parameters can be changed via Default Gateway 192 168 0 1 the normal configuration pages IP Address 192 168 0106 after the Quick Start configu
73. es transmitted Transmit frames with rts enabled Transmit frames with cts enabled Beacons transmitted Beacon missed count Beacon miss reset count Transmit message failed due to no tx buffer data Fatal hardware error interrupts Receiver PHY error summary count Transmitter queue stopped because it s full www cooperbussmann com BussmannWirelessResources 61 Cooper Bussmann Wireless Ethernet 8 Device Server BU 945U E 802 11 DSSS User Manual 4 5 Testing Radio Paths The general procedure for radio range testing a link is fairly simple Configure two units to form a link using automatic radio rates Install the Access Point at a fixed location Take a laptop computer and the Client to each of the remote locations and analyze the link using the Connectivity webpage If a beacon is heard from the Access Point the Client will update its Connectivity webpage with the received signal strength of beacon messages from the Access Point If the signal is strong enough a link may be established and the Connectivity webpage of the Access Point may be opened If the link is weak the LINK led will go out and the remote Connectivity webpage of the Access Point will fail to load Using this procedure the signal strengths of units at both locations may be analyzed and traffic is sent between the units whilst remote Webpages are opened Testing radio paths is generally testing the amount of data throughput that can be achieved via the radio link We c
74. eset Save changes to non volatile memory and reset module BU 945U E 900MHz 802 11 channel selection is done by selecting the appropriate channel from the drop down list Only channels available for that region will be available Channel AP Only 38 919MHZz 1 25MHz Channel AP Only 24 912MHz 20MHz 33 919MHz 5MHz 6 904MHz 25MHz2 35 917MHz 2 5MHz 8 904MHz 1 25MHz 36 919MHz 2 5MHz 11 907MHz SMHz 37 917MHz 1 25MHz 12 907MHz 10MHz Australia 38 919MHz 1 25MHz 15 907MHz 2 5MHz 41 922MHz 5MHz USA Canada 15 909MH2 25MH2 42 922MHz 10MHz 17 907MHz 1 25MHz 43 924MHz SMHz 18 909MHz 1 25MHz 45 922MHz 25MHz 21 912MHz 5MHz 46 924MHz 2 5MHz 22 912MHz 10MHz 47 922MHz 1 25MHz 24 912MHz 20MHz 48 924MHz 1 25MHz 125 912MHz 2 5MHz 26 914MHz 2 5MHz 27 912MHz 1 25MHz 28 914MHz 1 25MHz 3 8 DHCP Client Configuration 31 917MHz 5MHz 32 917MHz 10MHz 34 917MHz 20MHz 35 917MHz 25MHz 36 919MHz 25MHz DHCP Dynamic Host Configuration Protocol allows DHCP Clients to automatically obtain their IP Address at start up This simplifies network administration as there is no need to manually configure each device with a separate IP Address The BU 945U E is able to act as a DHCP client To set the BU 945U E to acquire its IP address from a DHCP Server check the box Obtain IP Address Automatically on the Network Configurati
75. expense of extra overhead The routed example below cannot provide the redundancy of the bridged example and requires more configuration effort but does not have the overhead of using the bridge Spanning Tree Protocol so is suited to fixed installations that do not require redundancy As mentioned previously configuration of the WDS router example is more complex than the bridged example given earlier Each Modem and each link have a different SSID This is done to limit broadcast traffic and to route data only were it needs to go Site B in the WDS router example above has three WDS links to Site A C and D we show Site B s configuration below It can be seen that there are 3 entries in the WDS Connections list WDS Connections Connection SSID MAC Encryption Encryption Key Router IP Router STP Mode Address Subnet 1 Sta Uplink SSID AA None x 169 254 0 3 255 255 255 0 2 AP Downlink W SSID_BB None 169 254 5 3 255 255 255 0 3 AP Downlink M SSID_B To L o e The first entry specifies a connection to the Access Point whose SSID is SSID AA and that it is to be a Virtual Station interface with a separate Router IP address of 169 254 0 3 this is the address that Site B adopts for the link to Site A Note that this IP Address specifies a different network than that of the default interface for Site A or B i e default interfaces 192 168 0 X and 192 168 X respectively It is a requirement that the vi
76. figuration problems Shows an event log of the modules operation used for diagnosing problems Page can be saved and emailed to Coopre Bussmann if requested Clear System Log will clear out the log file and start fresh This option will show the module configuration in XML format This file can be saved for future reference Any configuration XML files saved using the Read Configuration above can be loaded back into the module This option is used for firmware upgrades Load the file using the Browse button and when found press Send which will load the file into the module When completed press Reset Firmware upgrade can be done locally or remotely via the radio Resets the module Loads the Factory default configuration and resets CAUTION Doing this will overwrite any current configuration Because a module configuration is viewed and changed in a web format which uses TCP P protocol you can view or change the configuration of a remote module via the wireless link provided the remote module already have a wireless link established to the local BU 945U E To perform remote configuration connect a PC to the local module run Internet Explorer and enter the IP address of the remote unit or device name if using DNS the configuration page of the remote module will be shown and changes can be made Care must be taken if modifying the configuration of a module remotely If the Radio Configuration is changed
77. g5 COOPER Bussmann Read and Retain for Future Reference 3A1582Rev1 6 Cooper Bussmann BU 945U E 802 11 DSSS Wireless Ethernet amp Device Server User Manual Version 1 6 COOPER Bussmann Cooper Bussmann Wireless Ethernet 8 Device Server BU 945U E 802 11 DSSS User Manual Cooper Bussmann Application Engineering e Phone 8 00 a m 5 00 p m Central M F 636 527 1270 e Fax 636 527 1607 e E mail FuseTech cooperindustries com Thank you for your selection of the BU 945U E Wireless Ethernet Modem We trust it will give you many years of valuable service ATTENTION Incorrect termination of supply wires may cause internal damage and will void warranty To ensure your BU 945U E enjoys a long life 5 Double check ALL connections with the user manual before turning the power on CAUTION To comply with FCC RF Exposure requirements in section 1 1310 of the FCC Rules antennas used with this device must be installed to provide a separation distance of at least 20cm from all persons to satisfy RF exposure compliance DO NOT e Operate the transmitter when someone is within 20cm of the antenna e Operate the transmitter unless all RF connectors are secure and any open connectors are properly terminated e Operate the equipment near electrical blasting caps or in an explosive atmosphere All equipment must be properly grounded for safe operations All equipment should be serviced only by a qualified technician FCC Noti
78. he Digital Output is set ON Shared Digital I O Status Digital Input is OFF Digital Output is OFF Communications Failure Digital output action on wifi link failure is No Action The Digital I O channel can be transferred to from another device using Modbus see section 3 15 Modbus 1 0 Transfer or it can be configured to provide status of the module communications If the BU 945U E disassociates from another unit that is there is no wireless link you can configure the digital output to turn ON set or OFF drop 48 www cooperbussmann com BussmannWirelessResources 3A1582Rev1 6 Cooper Bussmann Wireless Ethernet 8 Device Server BU 945U E 802 11 DSSS User Manual 3 17 Modbus 1 0 Transfer The BU 945U E provides Modbus TCP Client and Modbus TCP Server functionality for I O transfer 5000 x 16bit general purpose registers are provided for Modbus including the onboard Digital Input Output and are shared for both Client and Server Modbus TCP Client Master and Modbus TCP Server Slave are both supported simultaneously and when combined with the built in Modbus TCP to RTU Gateway the BU 945U E can transfer 1 0 to from almost any combination of Modbus TCP or RTU devices The layout of the BU 945U E 1 0 Registers is summarized in the table below Each register is internally saved as a 16 unsigned integer value A Modbus transaction may access the entire 16 bit value of any register or alternatively the most significant bit of
79. he onboard Modbus TCP Client 1 0 to be transferred via the Modbus TCP Client is specified with Modbus TCP Client Mappings Modbus Client Scan Rate Enter the delay in milliseconds between execution of consecutive Modbus TCP Client Mappings to the same Server Reset Registers on Comm s Fail When Enabled the value in any onboard O register will be reset to zero if a valid Modbus transaction directed to from the given register has not been completed for longer than the Comms Fail Timeout Comms Fail Timeout The period of time after which onboard O registers will be reset if a valid Modbus transaction directed at that register has not completed Enable Modbus Statistics Enables the Modbus Diagnostic registers as shown in Section 4 4 Internal Diagnostic Modbus Registers Disabling this option will free up the registers and also slightly increase processing resources Log background Noise RSSI amp BGND on Rx messages are made available in the diagnostic registers See 4 4 Internal Diagnostic Modbus Registers for details For a Hex value of 5F5D the 5D byte RSSI and the 5F byte BGND Convert value from hex to dec and add a e g 5F 95dB Enabling this option removes the RSSI byte from these registers and so only the Background Noise value is made available 3A1582Rev1 6 www cooperbussmann com BussmannWirelessResources 51 Cooper Bussmann Wireless Ethernet 8 Device Server BU 945U E 802 11 DSSS User Manual Modbu
80. heck on security certificates Unless the BU 945U E has the address 192 168 0 100 when you first connect to the BU 945U E Internet Explorer 7 will issue a warning about mismatched security certificate address You can turn off this behavior in IE7 by selecting Tools gt Internet Options gt Advanced gt Security gt Warn about certificate address mismatch Method 2 Set BU 945U E Network address to match the local network For this method you will need to determine what IP address Gateway address and netmask to assign to the BU 945U E so that it appears on your network Ask your system administrator if you don t know the correct settings for your network E g The default IP address of the BU 945U E modem is 192 168 0 1 and the network you wish to connect to is on 10 10 0 X PC is on 10 10 0 5 Once you have determined the correct settings for your network you need to connect to the modem s RS 232 serial port using a straight through serial cable and a terminal package such as Hyperterminal set to 115 200 baud 8 data bits 1 stop bit no Parity e Open Hyperterminal and monitor communications e Set the SETUP RUN switch to the SETUP position and connect power to the modem e Observe Hyperterminal and when you see the Cooper Bussmann Dragon screen see below press lt Enter gt to get the following prompt Za NA HINA TU m0 N HLO E HO a 5 nos 1 NGA s Ww WT t M nan ho 2 ll Nf
81. iaaa maaa aiaa eee 5 Example WDS Routed Network 0 00 00 37 1 2 GETTING STARTED QUICKLY 00 0 c eee 8 NBSA AGIT 39 CHAPTER 2 INSTALLATION 00cccceeeeeeeeees 9 3 13 ROUTING RULES aanak 39 21 GENERA RB 9 3 14 WIRELESS MESSAGE FILTERING 0000 40 9 2 ANTENNA INSTALLATION ccc cc cececccecuee 9 MAC Address Filter Configuration 0 00 42 Bench test and Demo System setup 10 IP Address Filter Configuration 00 0 0 ee 42 Plant and Factory Installations 00 a 10 APP Filter Configuration 0 e essen eee eae 43 Line of Sight Installations 00 00 cece cece eee eee 10 3 15 SERIAL PORT CONFIGURATION 008 44 AntennaS a 10 RS 232 PPP Server eee 44 Installation tips o on anaa 11 Serial Gateway Server Client Multicast 45 Omni directional antennas dipole and collinear 11 Serial Gateway Modbus Modbus RTU to TCP 45 Yagi directional antennas 0 0 cec eevee cece 12 Modbus TCP to RTU Gateway aaa 46 2 3 POWER SUPPLY 22 20 00 ccc cece cece ee eeuvees 12 Serial MENU aaa 46 2 4 SERIAL CONNECTIONS 7 ccc cece eee eee eens 12 Multicast Pipe Manager aaa aaa aaa 47 RS232 Serial Port ccc ccc ccc cece eee ccceenes 12 3 16 DIGITAL INPUT OUTPUT 0 48 DB9 Connector PinoutS cc ce eee eee ee aaa 13 3 17 MODBUS I O TRANSFER aa 49 RS485 Serial P
82. icate your acceptance of this License to do so and all its terms and conditions for copying distributing or modifying the Program or works based on it 3A1582Rev1 6 www cooperbussmann com BussmannWirelessResources 79 Cooper Bussmann Wireless Ethernet 8 Device Server BU 945U E 802 11 DSSS User Manual 6 Each time you redistribute the Program or any work based on the Program the recipient automatically receives a license from the original licensor to copy distribute or modify the Program subject to these terms and conditions You may not impose any further restrictions on the recipients exercise of the rights granted herein You are not responsible for enforcing compliance by third parties to this License 7 lf as a consequence of a court judgment or allegation of patent infringement or for any other reason not limited to patent issues conditions are imposed on you whether by court order agreement or otherwise that contradict the conditions of this License they do not excuse you from the conditions of this License If you cannot distribute so as to satisfy simultaneously your obligations under this License and any other pertinent obligations then as a consequence you may not distribute the Program at all For example if a patent license would not permit royalty free redistribution of the Program by all those who receive copies directly or indirectly through you then the only way you could satisfy both it and this License would be to refra
83. id the user s authority to operate this equipment This Device should only be connected to PCs that are covered by either FCC DoC or are FCC certified 2 www cooperbussmann com BussmannWirelessResources 3A1582Rev1 6 Cooper Bussmann Wireless Ethernet 8 Device Server BU 945U E 802 11 DSSS User Manual Important Notice Cooper Bussmann products are designed to be used in industrial environments by experienced industrial engineering personnel with adequate knowledge of safety design considerations Cooper Bussmann radio products are used on unprotected license free radio bands with radio noise and interference The products are designed to operate in the presence of noise and interference however in an extreme case radio noise and interference could cause product operation delays or operation failure Like all industrial electronic products Cooper Bussmann products can fail in a variety of modes due to misuse age or malfunction We recommend that users and designers design systems using design techniques intended to prevent personal injury or damage during product operation and provide failure tolerant systems to prevent personal injury or damage in the event of product failure Designers must warn users of the equipment or systems if adequate protection against failure has not been included in the system design Designers must include this Important Notice in operating procedures and system manuals These products should not be used in non in
84. igured in BU 945U E When booted in SETUP mode the PPP server has username user and password user 44 www cooperbussmann com BussmannWirelessResources 3A1582Rev1 6 Cooper Bussmann Wireless Ethernet 8 Device Server BU 945U E 802 11 DSSS User Manual Serial Gateway Server Client Multicast Serial Gateway functionality is available for both RS 232 and RS 485 ports independently and enables serial data to be routed via the wired or wireless network connection Serial Gateway functionality is similar to radio modem functionality allowing point to point and multipoint serial data transfer The Serial Gateway can be configured as either as Server Client Multicast Group or Modbus When configured as Server the module will wait for a TCP connection to be initiated by a remote client When configured as Client the module will automatically attempt to connect to a specified remote server using TCP When configured as Multicast Group the module will broadcast data to all members of the same Multicast Group using UDP With the Serial Gateway Server Client and Multicast functions it is possible for serial data from a BU 945U E to be transferred to any other BU 945U E serial ports including the corresponding port on the same BU 945U E Serial Gateway Modbus Modbus RTU to TCP When configured as Modbus will allow a serial Modbus RTU Client Master to connect with a single Ethernet Modbus TCP Server Slave
85. ily by client server applications ISN A type of broadband Internet connection that provides digital service from the customer s premises to the dial up telephone network ISDN uses standard POTS copper wiring to deliver voice data or video ISO Network Model A network model developed by the International Standards Organization ISO that consists of seven different levels or layers By standardizing these layers and the interfaces in between different portions of a given protocol can be modified or changed as technologies advance or systems requirements are altered The seven layers are Physical Data Link Network Transport Session Presentation Application LAN Local Area Network A system of connecting PCs and other devices within the same physical proximity for sharing resources such as an Internet connections printers files and drives Receive Sensitivity The minimum signal strength required to pick up a signal Higher bandwidth connections usually have less receive sensitivity than lower bandwidth connections Router A device that forwards data from one WLAN or wired local area network to another 3A1582Rev1 6 Cooper Bussmann Wireless Ethernet 8 Device Server BU 945U E 802 11 DSSS User Manual SNR Signal to Noise Ratio The number of decibels difference between the signal strength and background noise Transmit Power The power usually expressed in mW or dBm that the wireless device transmits at MAC Add
86. in entirely from distribution of the Program If any portion of this section is held invalid or unenforceable under any particular circumstance the balance of the section is intended to apply and the section as a whole is intended to apply in other circumstances It is not the purpose of this section to induce you to infringe any patents or other property right claims or to contest validity of any such claims this section has the sole purpose of protecting the integrity of the free software distribution system which is implemented by public license practices Many people have made generous contributions to the wide range of software distributed through that system in reliance on consistent application of that system it is up to the author donor to decide if he or she is willing to distribute software through any other system and a licensee cannot impose that choice This section is intended to make thoroughly clear what is believed to be a consequence of the rest of this License 8 If the distribution and or use of the Program is restricted in certain countries either by patents or by copyrighted interfaces the original copyright holder who places the Program under this License may add an explicit geographical distribution limitation excluding those countries so that distribution is permitted only in or among countries not thus excluded In such case this License incorporates the limitation as if written in the body of this License 9 The Free
87. is intended primarily for Internet access is simple to set up and usually does not support installation of third party software These computers generally offer customized web browsing touch screen navigation e mail services entertainment and personal information management applications 70 www cooperbussmann com BussmannWirelessResources IP Internet Protocol A set of rules used to send and receive messages across local networks and the Internet IP Telephony Technology that supports voice data and video transmission via IP based LANs WANs and the Internet This includes VolP Voice over IP IP Address A 32 bit number that identifies each sender or receiver of information that is sent across the Internet An IP address has two parts an identifier of a particular network on the Internet and an identifier of the particular device which can be a server or a workstation within that network IPX SPX Internetwork Packet Exchange a networking protocol used by the Novell NetWare operating systems Like UDP IP IPX is a datagram protocol used for connectionless communications Higher level protocols such as SPX and NCP are used for additional error recovery services Sequenced Packet Exchange SPX a transport layer protocol layer 4 of the OSI Model used in Novell Netware networks The SPX layer sits on top of the IPX layer layer 3 and provides connection oriented services between two nodes on the network SPX is used primar
88. istinguish between phone based data networks and Wi Fi Phone networks are considered WANs and Wi Fi networks are considered Wireless Local Area Networks WLANs WEP Wired Equivalent Privacy Basic wireless security provided by Wi Fi In some instances WEP may be all a home or small business user needs to protect wireless data WEP is available in 40 bit also called 64 bit or in 108 bit also called 128 bit encryption modes As 108 bit encryption provides a longer algorithm that takes longer to decode it can provide better security than basic 40 bit 64 bit encryption Wi Fi Wireless Fidelity An interoperability certification for wireless local area network LAN products based on the Institute of Electrical and Electronics Engineers IEEE 802 11 standard 72 www cooperbussmann com BussmannWirelessResources 3A1582Rev1 6 Cooper Bussmann Wireless Ethernet 8 Device Server BU 945U E 802 11 DSSS User Manual APPENDIX C Power CONVERSION dBm to mW Conversion Watts dBm Watts dBm 10 mW 10 dB 200 mW 23 dB 13 mW 11 dB 316 mW 25 dB 16 mW 12 dB 398 mW 26 dB 20 mW 13 dB 500 mW 27 dB 25 mW 14 dB 630 mW 28 dB 32 mW 15 dB 800 mW 29 dB 40 mW 16 dB 1 0W 30 dB 50 mW 17 dB 1 3W 31 dB 63 mW 18 dB 1 6W 32 dB 79 mW 19 dB 2 0 W 33 dB 100 mW 20 dB 2 0 W 34 dB 126 mW 21 dB 3 2 W 35 dB 158 mW 22 dB 4 0W 36 dB 3A1582Rev1 6 www cooperbussmann com BussmannWirelessResources Cooper Bussmann Wireless Ethernet 4 Device Server BU 945U
89. its the data to the AP which then forwards the data to the destined Client are incorrect between units in the same system or a dissimilar encryption scheme is configured the LINK led will light 5 Presence of a link does not mean that the connected unit is authorized to communicate over radio If the encryption keys however data cannot be passed over the wireless network A maximum of 127 Clients may be linked to an Access Point How a Link Connection is Lost The Access Point refreshes the link status with a Client every time a message is received from that Client If nothing is received from a Client for a period of 120 seconds the Access Point sends a link check message If there is no response to the link check a De authenticate message is sent and the link is dropped A Client monitors beacon messages from an Access Point to determine whether the link is still present If the Client can no longer receive beacons from the Access Point it assumes the AP is out of range and the link is dropped Whenever a Client is not connected to an AP it will cyclically scan all available channels for a suitable AP Roaming Clients Clients can roam within a system however if the link to the Access Point fails or the radio signal level becomes too weak it will scan for beacons and connect to an Access Point provided the SSID and any Encryption methods keys etc are compatible If there are multiple Access Points it will select the connecti
90. ivate Save to non volatile memory and restart to activate changes ARP Address Resolution Protocol is a broadcast message and is primarily used for finding a MAC address when only its IP or some other Network Layer address is known On large networks you generally tend to get a high proportion of broadcast messages Using ARP filters is useful for reducing broadcast traffic on the wireless network by only allowing ARP requests for known units to pass or blocking ARP requests for high use addresses Select Blacklist or Whitelist Add Entry Delete Entry Enable IP Address IP Netmask Save Changes Save Changes and Reset 3A1582Rev1 6 A Blacklist will block ARP requests that match the entry A Whitelist will allow only ARP Requests that match the entry All other devices are blocked Add a row to the table of ARP Address filter rules Delete the currently selected ARP address filter rule Check this box to enable the rule This sets the IP address that you wish to filter Sets the IP Netmask Save changes to non volatile memory Reset is required to activate Save to non volatile memory and restart to activate changes www cooperbussmann com BussmannWirelessResources 43 Cooper Bussmann Wireless Ethernet 8 Device Server BU 945U E 802 11 DSSS User Manual 3 15 Serial Port Configuration The BU 945U E has an RS 232 and an RS 485 port for serial communications These ports may be used for different purposes The BU
91. k is lost The Spanning Tree Algorithm maintains a single path between all nodes in a network by forming a tree like structure The Bridge Priority determines where the node sits in the tree A Bridge configured with the lowest priority 0 will become the root node in the network and will direct traffic between each of its branches The root node is typically the unit that handles the majority of traffic in the network The BU 945U E is configured with a Bridge Priority of 32768 by default The intention is to reduce traffic that the BU 945U E must handle by placing it at the branch level in the network tree As a branch the BU 945U E needs only pass traffic to devices that are its leaves There is some overhead in maintaining a network utilizing the Spanning Tree Algorithm Users wishing to increase their throughput at the expense of redundancy should disable Spanning Tree The Spanning Tree Protocol can be configured on the Repeaters configuration page 3 12 Multiple AP Repeater Mesh Network WDS Configuration O GF Site A Site B E Virtual Station Virtual Client SSID Link1 WDS Link Station SSID Area2 Station SSID Area1 Station SSID Area1 Station SSID Area2 The range of a wireless network can be extended by allowing Access Points to behave as repeaters and forward traffic to other Access Points Access Point to Access Point communications is also known as Wireless Distribution System W
92. l NW A A sll 7 a AN Say Be HG Pr Pa YN a DONA l AL i AN w7 A ited ate ss 4 STI ll i agp dd Oo e Type the following ifconfig and it will show the configuration of the Ethernet port and from this you will be able to see what the IP address is e g eth0 Link encap Ethernet HWaddr 00 12 AF FF FF FF inet addr 192 168 0 1 Bcast 192 168 0 255 Mask 255 255 255 0 UP BROADCAST RUNNING MULTICAST MTU 1500 Metric 1 RX packets 8 errors 0 dropped 0 overruns 0 frame 0 TX packets 0 errors 0 dropped 0 overruns 0 carrier 0 collisions 0 txqueuelen 256 e Temporarily change the IP address to something that will enable connection to your local network E g type ifconfig ethO 10 10 0 6 netmask 255 255 255 0 only add the netmask if the netmask is anything other than the standard 255 255 255 0 e P address should now be changed and you can check by typing ifconfig again Note these changes are only temporary and if the module is reset they will go back to the normal default 192 168 0 XXX e Open Internet Explorer and ensure that settings will allow you to connect to the IP address selected If the PC uses a proxy server ensure that Internet Explorer will bypass the Proxy Server for local addresses This option may be modified by opening Tools gt Internet Options gt Connections Tab gt LAN Settings gt Proxy Server gt bypass proxy for local addresses 22 www cooperbussmann com BussmannWirelessResourc
93. ler networks are used to simplify addressing between numerous computers Subnets connect together through a router Switch A type of hub that efficiently controls the way multiple devices use the same network so that each can operate at optimal performance A switch acts as a networks traffic cop rather than transmitting all the packets it receives to all ports as a hub does a switch transmits packets to only the receiving port TCP Transmission Control Protocol A protocol used along with the Internet Protocol IP to send data in the form of individual units called packets between computers over the Internet While IP takes care of handling the actual delivery of the data TCP takes care of keeping track of the packets that a message is divided into for efficient routing through the Internet For example when a web page is downloaded from a web server the TCP program layer in that server divides the file into packets numbers the packets and then forwards them individually to the IP program layer Although each packet has the same destination IP address it may get routed differently through the network At the other end TCP reassembles the individual packets and waits until they have all arrived to forward them as single message TCP IP The underlying technology behind the Internet and communications between computers in a network The first part TCP is the transport part which matches the size of the messages on either end and
94. lients need only specify the Access Point as their default gateway i e they require no routing rules be configured However for the Access Point to be able to deliver traffic to LAN B and LAN C it needs to have routing rules configured that specify the respective BU 945U E client routers as next hop routers i e gateways to networks B and C Note that devices on LAN A should specify the BU 945U E Access Point as their default gateway 3A1582Rev1 6 www cooperbussmann com BussmannWirelessResources 39 Cooper Bussmann Wireless Ethernet 8 Device Server BU 945U E 802 11 DSSS User Manual An alternative to adding routing rules to the BU 945U E in this example would be for each device on LAN A that needs to communicate with LANs B and C to have independent routing rules specifying the BU 945U E clients at B and C as gateways to those networks The routing rules for the Access Point in the above example are shown below The first entry shows the route to LAN B The gateway for the route to LAN B is configured as the wireless IP address of the BU 945U E client connected to LAN B The destination for the route is configured as the network address of LAN B Because the host id of the destination IP address is 0 it specifies a network address Consequently any traffic received at the Access Point with destination IP address 169 254 109 x where x is any host id will be forwarded to the BU 945U E at LAN B Devices on LAN B amp LAN C that needs to send mes
95. ls for a suitable Access Point The Client will attempt to establish a link with an Access Point only if it has matching SSID Encryption method etc and other compatible capabilities as indicated by the beacon If more than one suitable Access Point is discovered the client will attempt to establish a link with the Access Point that has the strongest radio signal Link Establishment Once a Client identifies a suitable Access Point for link establishment it attempts to establish a link using a two step process Authentication and Association During Authentication the Client and Access Point check if their configurations permit them to establish a link Once the Client has been authenticated it will then request an Association to establish a link Status of the wireless link is indicated via the TX LINK LED For an Access Point the TX LINK LED will be OFF while no links have been established Once one or more links have been established the TX LINK LED is on GREEN For a Client the Link LED will reflect the connection status to an Access Point Link status is also displayed on the Connectivity page of the web interface After the link is established data may be transferred in both directions The Access Point will act as a master unit and will control the flow of data to the Clients linked to it Clients can only transmit data to the AP to which they are connected When a Client transfers data to another Client it first transm
96. m can be placed at each remote location and connected serially to each device A multicast pipe is configured to communicate with all devices using a multicast address and port i e 224 0 1 1 5000 The Scada then communicates with the remotes via the IP address of the Multicast Manager and the port selected in the configuration i e 5001 3A1582Rev1 6 www cooperbussmann com BussmannWirelessResources 47 Cooper Bussmann Wireless Ethernet 8 Device Server BU 945U E 802 11 DSSS User Manual Server 224 0 1 1 Port 5000 Scada Running a Client Virtual Serial Port 4 Multicast Pipe Manager Enabled Server Port 5001 Multicast Groupt IP Address 2240 1 1 Multicast Group Port 5000 Multicast Pipe Manager Enabled Enables or disables the Multicast Pipe manager Server Port Server port used by the Multicast Pipe Manager Will need to be configured the same as the Port on the Client i e Scada DCS etc Multicast Group IP Address Broadcast Address used when communicating to all other Multicast devices This address will need to be the same on all communicating Multicast devices Multicast Group Port Multicast Port used when communicating to all other Multicast devices Will need to be the same on all communicating Multicast devices 3 16 Digital Input Output The functionality of the shared Digital Input Output pin may be configured via the I O Transfer webpage As this pin is shared the Digital Input status will be ON when t
97. ming Stations full connectivity across the network WDS Connections Connection SSID MAC Encryption Encryption Key Router IP Router STP Mode Address Subnet 1 AP Downlink 4 SSID_A B WPA2 PSK AES PassPhrase Site B WDS Configuration 2 Example Adding Redundancy In the example below 4 x Access Points A B C amp D form a mesh network using only WDS bridge interfaces Each of the Access Points may also have its own Clients associated Each Access Point is configured with a different SSID meaning the clients associated with each Access Point are fixed Sites A B C and D can all exchange data with each other as can all of their Stations as if they were all on the same wired segment It can be seen that there are redundant paths and therefore the possibility for loops to occur so the bridge Spanning Tree Protocol should be enabled and depending on the size of the mesh possibly configuring a Bridge Priority Bridge Priority is used to determine the connection priority when selecting an interface to put into the forwarding state You can assign higher priority values to interfaces that you want spanning tree to select first and lower priority values to interfaces that you want spanning tree to select last If all interfaces have the same priority value the MAC address is used to work out the priority To illustrate the redundancy consider that if Site A needs to send data to Site D it has redundant paths through both B and C
98. n for the configuration below Network A Settings Client Bridge Settings IP Address 192 168 0 17 Gateway IP 192 168 2 51 Subnet Mask 255 255 255 0 Ethernet IP 192 168 2 50 Gateway IP 192 168 0 1 Subnet Mask 255 255 255 0 Wireless IP 192 168 2 50 Subnet Mask 255 255 255 0 Access Point Router Settings Network B Settings Gateway IP 192 168 0 1 IP Address 192 168 2 201 Ethernet IP 192 168 0 191 Subnet Mask 255 255 255 0 Subnet Mask 255 255 255 0 Gateway IP 192 168 2 51 Wireless IP 192 168 2 051 Subnet Mask 255 255 255 0 In the Network A PC a routing rule is to be set This will allow Network A amp B to have access to each other This is entered under cmd prompt Route ADD 192 168 2 0 MASK 255 255 255 0 192 168 0 191 This says access everything on network B 192 168 2 0 with the Mask of 255 255 255 0 on Network A via the Ethernet IP Interface 192 168 0 191 IP Address 192 168 2 0 will allow everything on this network to be shared by the router When adding a routing table you will need to enter this in Once entered in the Router will determine whether to pass information over the router if it is addressed to do so or not For added security MAC address filtering could be added as mentioned earlier in Section 3 3A1582Rev1 6 www cooperbussmann com BussmannWirelessResources 65 Cooper Bussmann Wireless Ethernet 8 Device Server BU 945U E 802 11 DSSS User Manual CHAPTER 5 SPECIFICATIONS General EMC Specification Radi
99. n of maximum signal solves this problem However where the radio path changes because the BU 945U E is mounted on moving equipment or if there is moving equipment in the area then the solution is to use two antennas Because the two connectors are separated the RF signal at each connector will be different in the presence of multi path fading The BU 945U E unit will automatically select the higher RF signal Generally directional antennas are not normally used in plant and factory installations unless required for increased signal level Line of sight installations In longer line of sight installations the range may be increased by using a high gain antenna on the TX RX connector However the gain should not cause the effective radiated power ERP to exceed the permitted value A second higher gain antenna can be connected to the RX connector without affecting ERP this will increase the operating range provided any interference in the direction of the link is low Antennas Antennas can be either connected directly to the module connectors or connected via 50 ohm coaxial cable e g RG58 Cellfoil or RG213 terminated with a male SMA coaxial connector The higher the antenna is mounted the greater the transmission range will be however as the length of coaxial cable increases so do cable losses The net gain of an antenna cable configuration is the gain of the antenna in dBi less the loss in the coaxial cable in dB The BU 945U E maximum
100. nd radio paths 1 1 Network Topology The BU 945U E is an Ethernet device and must be configured as part 192 168 0 34 192 168 0 72 of an Ethernet network Each BU 945U E must be configured as an e Access Point or Sta Station Client Access Point Client Bridge Bridge Also needs to be configured as a 192 168 0 34 e Bridge or Router 192 168 0 72 LAN You can also connect to the BU 945U E via a RS232 or RS485 serial Hg 7 port using serial server or PPP point to point protocol PPP allows l the BU 945U E to connect serial communications into the Ethernet internet network Access Point vs Client The Access Point unit acts as the wireless master unit The Access Point accepts and authorizes links initiated but client units and controls the wireless communications Clients Stations are slave units and when connected to the Access Point becomes transparent ethernet link The first diagram shows a connection between two Ethernet devices using BU 945U E ethernet modems In this example one BU 945U E is configured as an Access Point and the other as a Client the Access Point can be connected Client Ethernet Device l 3A1582Rev1 6 www cooperbussmann com BussmannWirelessResources 5 Cooper Bussmann Wireless Ethernet 4 Device Server BU 945U E 802 11 DSSS User Manual The second diagram shows an existing LAN being extended using BU 945U Es In this example the Access P
101. network as they originated on are not passed to the other network therefore reducing traffic on the entire network Collision Avoidance A network node procedure for proactively detecting that it can transmit a signal without risking a collision with transmissions from other network nodes Client Sta Station A device on a network that gains access to data information and other devices through a Server Access Point Crossover Cable A special cable used for networking two computers without the use of a hub Crossover cables may also be required for connecting a cable or DSL modem to a wireless gateway or access point The cable is wired so that the signals crossover connecting transmit signal on one side to receiver signals on the other 3A1582Rev1 6 CSMA CA Carrier Sense Multiple Access Collision Avoidance is a listen before talk method of minimizing but not eliminating collisions caused by simultaneous transmission by multiple radios IEEE 802 11 states collision avoidance method rather than collision detection must be used because the standard employs half duplex radios radios capable of transmission or reception but not both simultaneously Unlike conventional wired Ethernet nodes a WLAN station cannot detect a collision while transmitting If a collision occurs the transmitting station will not receive an ACKnowledge packet from the intended receive station For this reason ACK packets have a higher pri
102. nformation at a later time Note Entering dedicated Ethernet Routes can also be added to the wired Ethernet LAN in place of generating adding routing rules into the modems 3 14 Wireless Message Filtering When configured as a Bridge the BU 945U E will transmit all broadcast messages appearing at its wired Ethernet port When the BU 945U E is configured as a Router this does not occur In many cases the intended recipient of the broadcast traffic does not lie at the opposite end of a proposed radio link Reducing unnecessary broadcast traffic sent over the radio link will increase available bandwidth for data The BU 945U E has a filtering feature to help reduce unnecessary wireless transmissions and enhance security 40 www cooperbussmann com BussmannWirelessResources 3A1582Rev1 6 Cooper Bussmann Wireless Ethernet 8 Device Server BU 945U E 802 11 DSSS User Manual The BU 945U E may be configured to reject or accept messages to and from certain Addresses To accept wireless messages from particular devices a Whitelist of Addresses must be made Alternatively to reject messages from particular devices a Blacklist of Addresses must be made Filtering applies only to messages appearing at the wired Ethernet port of the configured BU 945U E The Filter comprises of three lists MAC Addresses IP Address Protocol Port and ARP Filters Each list may be set as either a Blacklist to block traffic for listed devices and protocols
103. ng traffic on the wired Ethernet a better idea of regular traffic can be discovered Network Analysis programs make configuration of a filter for the BU 945U E a simple task Statistics Time Uptime A 1 56 v System Log lt 46 gt Jan syslogd started BusyBox v1 00 A lt 13 gt Jan 0 root config_main System Boot naan lt 13 gt Jan root config_main Restoring Configuration with Factory Test lt 13 gt Jan 0 root config_main IP Address set to 192 168 0 122 lt 13 gt Jan 0 root config_main Restoring Generic Brand File lt 13 gt Jan 0 root config_main Restoring Generic product File lt 13 gt Jan root config_main Restoring Generic radio_locale File 3A1582Rev1 6 www cooperbussmann com BussmannWirelessResources 59 Cooper Bussmann Wireless Ethernet 8 Device Server BU 945U E 802 11 DSSS User Manual 4 4 Internal Diagnostic Modbus Registers There are a number of internal diagnostic registers that can be accessed via Modbus TCP RTU that will help with analyzing and diagnosing the radio network To access these register the Modbus Server will need to be enabled and a Modbus Server address will need to be configured See 3 16 Modbus 1 0 Transfer for details on how this is done After enabling the Modbus Client you can then access the following information by reading the corresponding Modbus Address at the Server ID address Connection Information Register Module Description 5000 Both Total number Associated Stations 500
104. nitiate a number of retries specified by the configured Maximum Request Retries The Modbus TCP to RTU Gateway may be configured to operate on either the RS 232 or RS 485 port Serial Menu RS232 RS485 Serial Port Configuration RS232 Port Select the desired functionality Select either PPP Serial Gateway or Modbus TCP to RTU Data Rate The serial data rate desired Serial data rates available range from 110bps to a maximum of 115 200bps Data Format The data format desired All the standard data formats are supported Flow Control Selects CTS RTS or None RS232 PPP Server Only RS232 Username User name to enter to access RS 232 PPP Server Password Password to access RS 232 PPP Server Local IP Address Select the IP address of the PPP server The remote device may be made visible on the Ethernet or Wireless networks by either utilizing proxy arp or routing The proxy arp feature may be enabled by setting the Local IP address the same as the Ethernet IP Address or the Wireless IP Address The module will respond on behalf of the remote device making it seem like the device is present on the configured network Alternatively if the IP address selected is not the same as the Ethernet or Wireless IP address routing is used to pass data to the Ethernet and Wireless ports Remote Device IP Address Select the IP address of the remote device Ensure this address is not the same as any other device on the Ethernet or Wireless networks 4
105. not available in ihe US Canada see an an an an an ao eee ao ao am am a am eee eee eee eee ee om mp 902 907 909 912 914915 917 919 922 924 927 928 MHz 904 E E E E fe m m a Ome me C SM M US Canada Australia New Zealand Hong Kong Each Country Region has a different frequency regulation with multiple band widths and numerous channels available The main reason for having different channels and bandwidths is to allow multiple radios to operate in close proximity with minimal interference As you can see from the Channels Diagram and the Data Throughput Table below the greater the band width the greater the overall data throughput If selecting the high band width i e 20MHz you will be limited to one channel which may be more susceptible to outside interference because it spans the available 900MHZ frequency range in some regions this high band width option may not even be available If selecting the lower bands i e 1 25MHz you have more channels available and each channel is non overlapping Adjacent channels do not cross over however the Data throughput will be considerably lower If you require a high data throughput then the higher band width will need to be selected and care with antenna placement etc will also need to be taken into account Selecting a 20 MHz channel will give the maximum TCP IP throughput of around 22 Mbps however if the band width is reduced 10MHZz 5MHz etc the maximum
106. ntication credentials access is permitted and data encryption keys are established similar to WPA PSK Fine grain user level access control can be achieved using this method An 802 1x capable RADIUS server may already be deployed in a large scale network environment The BU 945U E can make use of this server reducing replication of user authentication information In a typical WPA enterprise setup the BU 945U E Access point acts as Authenticator controlling access to the network Wireless clients BU 945U Es Laptops or other devices act as Supplicants requesting access to the network The Authenticator communicates with an authenti cation RADIUS server on the Ethernet network to verify Supplicant identity When a Supplicant requests access it sends an access request to the Authenticator which passes an authentication request to the external authentication server When the user credentials of the Supplicant are verified the Authenticator enables network access for the Supplicant data encryption keys are established and network traffic can pass Configuration of WPA Enterprise differs when the unit is configured as an Access point Authenticator or Client Supplicant If WDS interfaces are used it is possible for one BU 945U E to act as both an Authenticator and a Supplicant however in this situation only one set of user credentials can be entered for all Supplicants After changes are made to Network Configuration it is important
107. o 192 168 6 134 TCP port 5001 CP window size 64 0 KByte 18281 local 192 168 6 17 port 1850 connected with 192 168 606 134 port 5661 ID Interval Transfer Bandwidth 18281 6 30 3 sec 5 02 MBytes 1 39 Mbits sec jperf 2 6 2 bin gt Figure 5 JPerf Application Jperf is a graphical interface that runs over the top of Iperf It will display a graph result from the Iperf test To run Jperf open a CMD prompt and change to the jperf 2 0 2 directory and run the Jperf application as shown in Figure 6 icrosoft Windows XP Version 5 1 2666 y CC Copyright 1985 2661 Microsoft Corp Ncd jperf 2 68 2 Njperf 2 0 25jperf Figure 6 Followed by entering in Jperf at the prompt and pressing enter The CMD screen will disappear and the Jperf Screen will appear as seen in Figure 7 76 www cooperbussmann com BussmannWirelessResources 3A1582Rev1 6 Cooper Bussmann Wireless Ethernet 8 Device Server BU 945U E 802 11 DSSS User Manual EB JPerf 2 0 2 Network performance measurement graphical tool JPerf Iperf command bin iperf exe c 192 168 0 134 P 1 1 p 5001 fk t 10 Choose iPerf Mode Client Server address 192 168 0 134 Parallel Streams Application layer options Bandwidth _ Enable Compatibility Mode Transmit Output Format Report Interval KBits BW Testing Mode Dual Trade test port Representative File 5 ki Time sec _ Print MSS Transpor
108. o Specification Housing Terminal Blocks LED Indication Operating Temperature Power Supply Nominal Supply Average current Drain Transmit Current Drain Ethernet Port Standard Radio Transceiver Transmit Power Channels Receiver Sensitivity Antenna Connector Wireless Data Rate Serial Ports RS232 Port RS485 Port Data Rate bit sec EN 300 683 FCC Part 90 EN 300 328 FCC Part 15 247 RSS 210 BU 945U E A amp G 114 x 185 x 30mm 4 5 x 7 2 x 1 2 inch Powder coated extruded aluminum DIN rail mount Removable Suitable for 12 gauge 2 5mm2 conductors Module Status Serial RX and TX Radio RX and TX Radio Link Ethernet Activity Link BU 945U E 45 to 60 C 49 to 140 F O 99 RH non condensing 9 to 30Vdc Overvoltage and reverse voltage protected 300 mA 12V 160mA 24Vdc 410 mA 12V 210mA 24Vdc 10 100 Base T RJ45 IEEE 802 3 compliant Bridge router Access point client functionality Maximum Power Power may be limited by country specific configuration e 6 24 Mb s 630mW 28 dBm e 36 Mb s 400mW 4 26 dBm e 48 Mb s 200mW 23 dBm e 54 Mb s 125mW 21 dBm e US Canada 9X 1 25MHZz 9 x 2 5MHz 4 x 5MHz 4 x 10MHz and 2 x 20MHZz See 3 2 Selecting a Channel for more channel detail e Australia 4 x 1 25MHz 4 x 2 5MHz 3 x 5MHz and 1 x 10MHz 8 FER Frame Error Rate 93dBm 1Mbps 92dBm 2Mbps 91dBm 5 5Mbps 91dBm 6Mbps 90dBm 9Mbps 88dBm 11Mbps 88
109. oint is configured at the LAN end although the wireless link will still work if the Client is at the LAN end Ethernet Ethernet Device Device An Access Point could be used as a Repeater unit to connect two BU 945U E Clients which do not have direct reliable radio paths LAN Client There is no Special repeater module any BU 945U E can be a repeater and at the same time can be connected to an Ethernet devices or on a LAN Ethernet Devices Access Point Multiple Access Points can be set up in a mesh network to provide multiple repeaters 6 www cooperbussmann com BussmannWirelessResources 3A1582Rev1 6 Cooper Bussmann Wireless Ethernet 8 Device Server BU 945U E 802 11 DSSS User Manual Access Point Access Point Access Point Client p Client Client Bridge vs Router Each BU 945U E is configured with an IP address for the Ethernet side and another for the wireless side A Bridge connects devices within the same Ethernet network for example extending an existing Ethernet LAN For a Bridge the IP address for the wireless side is the same as the Ethernet side 192 168 0 34 192 168 0 72 Access Point Client Bridge Bridge 192 168 0 34 192 168 0 72 LAN Internet A Router connects devices on different LANs The IP addresses for the Ethernet and wireless sides are different In this example the wireless link is part of LAN A with the Client unit acting as a Rout
110. om 192 168 686 185 bytes 32 time 2ms TTL 64 eply from 192 168 6 185 bytes 32 time 2ms TTL 64 eply from aa Naa bytes 32 time 2ms TIL 64 5 5 5 5 eply from 192 168 6 18 bytes 32 time ims TTL 64 bytes 32 time 2ms TTL 64 5 bytes 32 time 1ms TTL 64 eply from 192 168 6 18 bytes 32 time 2ms TTL 64 eply from 192 168 6 18 bytes 32 time 2ms TTL 64 Ping statistics for 192 168 6 185 Packets Sent 15 Received 15 Lost z loss Approximate round trip times in milli seconds Minimum ims Maximum 2ms Average ims raha C N eply from 192 168 6 18 eply from 192 168 6 This t command is used to repeatedly ping the specified node in the network to cancel use Ctrl C A good test for the network once it is first set up is to use ping repeatedly from one PC s IP address to the other PC s IP address This gives a good indication of the network s reliability and how responsive it is from point to point When you enter Ctrl C the program reports a packet sent received lost percentage 3A1582Rev1 6 www cooperbussmann com BussmannWirelessResources Cooper Bussmann Wireless Ethernet amp Device Server BU 945U E 802 11 DSSS User Manual Ipconfig ipconfig can be used to show your current TCP P information including your address DNS server addresses adapter type and so on cx Command Prompt lofx icrosoft Windows XP Version 5 1 26001 a CC Copyright 1985 2661 Microsoft
111. on page When configured as a DHCP Client the Device Name on the Module Information page will be the module identifier as the IP address will be unknown and so should be given a unique name 30 www cooperbussmann com BussmannWirelessResources 3A1582Rev1 6 Cooper Bussmann Wireless Ethernet 8 Device Server BU 945U E 802 11 DSSS User Manual 3 9 DHCP Server Configuration The BU 945U E is able to act as a DHCP server supplying IP addresses automatically to other DHCP Client devices Note that the BU 945U E units need to act in conjunction with their connected devices If a connected device is a DHCP server the local and remote BU 945U E units can be configured as DHCP Clients and receive IP addresses from the server device Similarly if a BU 945U E is configured as a DHCP server it can provide IP addresses to DHCP Clients both BU 945U E units as well as other connected devices Configuration items for the DHCP Server are listed below Enabled Tick this box to enable the DHCP Server IP Range Minimum Maximum The DHCP Server will assign IP addresses to DHCP Clients from within this range of addresses Gateway Primary DNS Secondary DNS These Settings are common to all of the DHCP Clients and refer to the gateway address and Domain Name Service DNS Configuration Lease Time This is the number of seconds the client is granted the assigned IP address The client should renew its lease within this time 3 10 DNS Server Configur
112. on with the best signal level This functionality permits a client to have mobility whilst maintaining a link with the most suitable AP 16 www cooperbussmann com BussmannWirelessResources 3A1582Rev1 6 Cooper Bussmann Wireless Ethernet 8 Device Server BU 945U E 802 11 DSSS User Manual LED Indication The following table details the status of the indicating LEDs on the front panel under normal operating conditions LED Indicator Condition Meaning OK GREEN Normal Operation OK Flashing RED GREEN Module Boot Sequence Radio RX GREEN flash Radio receiving data Good Signal Strength Radio RX RED flash Radio receiving data Low Signal strength TX LINK GREEN Radio Connection Established TX LINK RED Flash Radio Transmitting RS 232 GREEN flash Data sent from RS 232 Serial Port RS 232 RED flash Data received to RS 232 Serial Port LAN ON Link Established on Ethernet port LAN Flash Activity on Ethernet port RS 485 GREEN flash Data sent from RS 485 Serial Port RS 485 RED flash Data received to RS 485 Serial Port DIO GREEN Digital Input is grounded DIO RED Digital Output is active DIO Off Digital Output OFF and Input is open circuit The Ethernet RJ45 port incorporates two indication LEDs The LINK LED comes on when there is a connection on the Ethernet port and will blink off briefly when activity is detected on the Ethernet Port The 100MB LED indicates that the connection is at 100 MBit Sec The 100MB LED will be off for 10
113. onfigures the connection as a virtual client Point to point configures the connection as a fixed link SSID MAC Address AP Mode Specify the SSID that this virtual access point will use Stations connecting to this virtual access point use this SSID Sta Mode Specify the SSID that this virtual station will use when connecting to other access points Point to Point Mode Specify the MAC address of an Access Point to establish a Fixed link with Usually only required for third party devices Encryption Select the required Encryption if any for this WDS link Encryption Key Enter the Encryption key for WEP encryption or the passphrase for WPA encryption For WEP encryption the encryption key is set as WEP Key 1 For Sta Mode this must match WEP Key 1 on the Access point this virtual client will connect to For AP mode clients must configure their WEP Key 1 to the same value as this key and select the Default WEP Key to be WEP Key 1 Router IP Leave this field blank if this WDS interface is to be bridged with the default wireless interface Otherwise enter the IP address for this connection that specifies the IP network to which messages are routed Router Subnet Leave this field blank if this WDS interface is to be bridged with the default wireless interface Otherwise enter the subnet mask of the network to which messages are routed STP Applicable to WDS bridged connections only Select the STP option if you wish to enable the bridge S
114. onnected directly via wired ethernet It may take longer if programmed remotely using the radio network depending on the current radio baud rate Performing an upgrade via a poor radio path is not recommended Browse Send Cancel 68 www cooperbussmann com BussmannWirelessResources 3A1582Rev1 6 Cooper Bussmann Wireless Ethernet 8 Device Server BU 945U E 802 11 DSSS User Manual APPENDIX B GLOSSARY ACK Acknowledgment Access Point An access point connects wireless network Stations or Clients to other Stations within the wireless network and also can serve as the point of interconnection between the wireless network and a wired network Each Access Point can serve multiple users within a defined network area Also known as a base station Antenna Gain Antennae don t increase the transmission power but focus the signal more So instead of transmitting in every direction including the sky and ground antenna focus the signal usually either more horizontally or in one particular direction This gain is measured in decibels sx Bandwidth The maximum data transfer speed available to a user through a network Bridge A bridge is used to connect two local area networks together Bridges are typically used to connect wireless networks to wired networks Typically bridges will transfer messages between networks only when the message destination is on the other network Messages that are destined for the same
115. ons with the serial device A 50 www cooperbussmann com BussmannWirelessResources 3A1582Rev1 6 Cooper Bussmann Wireless Ethernet 8 Device Server BU 945U E 802 11 DSSS User Manual Three Modbus TCP Client Mappings are also configured at B in order to perform the required O transfer The first mapping transfers the status of the onboard digital input at C to the onboard digital output at B Local Register 4320 specifies the register for the onboard digital output at B since B is the oca unit at which the mapping is configured O Count 1 specifies that only one O point is being transferred i e the single digital 1 0 Function Code 02 Read Discretes specifies the standard Modbus function code to read discrete i e digital inputs Destination Register 4300 specifies the register for the onboard digital input at unit C since C is the destination unit for this mapping Device ID 1is the ID of the onboard Modbus TCP Server at C Server IP Address 192 168 0 200 is the IP address of unit C which is the Modbus TCP Server we are reading from Response Timeout 1000 ms specifies that unit C must respond to this message within 1000ms Comm Fail Register 0 specifies the local register where the communications status for this mapping will be stored The second mapping reads 8 registers from serial unit D into onboard registers in unit B Note that in this case the specified Device ID 6 is the Modbus Address of the serial device D while the Serve
116. ority than all other network traffic After completion of a data transmission the receive station will begin transmission of the ACK packet before any other node can begin transmitting a new data packet All other stations must wait a longer pseudo randomized period of time before transmitting If an ACK packet is not received the transmitting station will wait for a subsequent opportunity to retry transmission n CSMA CD Carrier Sense Multiple Access Collision Detection is the access method used on an Ethernet network A network device transmits data after detecting that a channel is available However if two devices transmit data simultaneously the sending devices detect a collision and retransmit after a random time delay DHCP Dynamic Host Configuration Protocol A utility that enables a server to dynamically assign IP addresses from a predefined list and limit their time of use so that they can be reassigned Without DHCP an IT Manager would have to manually enter in all the IP addresses of all the computers on the network When DHCP is used whenever a computer logs onto the network it automatically gets an IP address assigned to it Dial Up A communication connection via the standard telephone network or Plain Old Telephone Service POTS DNS Domain Name Service A program that translates URLs to IP addresses by accessing a database maintained on a collection of Internet servers The program works behind the scenes to f
117. ort 0000 ee 13 3 18 MODULE INFORMATION CONFIGURATION 52 2 5 DISCRETE DIGITAL INPUT QUTPUT 005 15 3 area Webpage Fields o AA STARTUP TET e B20 REMOTE CONFIGURATION oc sa Access Point Start Up LX 16 3 21 CONFIGURATION EXAMPLES na ak saad 54 Client Startup LL 16 Setting a BU 945U E to Factory Default Settings 54 Link Establishment o oo L 16 Extending a wired network a 54 How a Link connection is lost 16 Connecting two separate networks together 55 Roaming Clients LL 16 Extending range of a network with a Repeater hop 56 LED Indication oo c ccc cece cece cece ey 17 CHAPTER 4 DIAGNOSTICS 02000 eee eee 57 3 2 SELECTING A CHANNEL 2 000 c cece cece eee 17 4 1 DIAGNOSTICS CHART 0 0 anna 57 802 11 900 MHZ Channels gt nananana 17 4 2 DIAGNOSTIC INFORMATION AVAILABLE 58 Radio Throughput gt osanna 19 o is E E 58 Throughput and Repeaters n n nananana 19 SME SUV APA AA aani SEA 58 3 3 CONFIGURING THE UNIT FOR THE FIRST TIME 20 4 3 STATISTICS 59 Default Configuration 0 20 Network Traffic Analysis 3 Ka ka KN ka Ka AGA IGeeedadedgas 59 Accessing Configuration for the first time 20 4 4 INTERNAL DIAGNOSTIC MODBUS REGISTERS 60 Method 1 Set PC to same network as BU 945U E 21 Connection Information aaa 60 Method 2 Set BU 945U
118. panning Tree Protocol on this connection 3 13 Routing Rules When a BU 945U E receives an IP frame that is destined for an IP address on a different network it checks if the network address matches the network address of one of its own interfaces i e hard wired Ethernet or wireless Ethernet or WDS and forwards the frame appropriately However if the IP network address does not match the network address of any of its interfaces the BU 945U E will forward the frame to its default gateway In this case it is assumed that the default gateway has a valid route to the destination In some cases it is not practical to have just one default gateway i e routed wireless networks with more than two BU 945U E routers and in some cases when WDS router interfaces are used If more than one next hop router is required the BU 945U E allows for up to 30 routing rules to be configured A routing rule specifies a destination network or host IP address and the corresponding next hop router that messages for the specified destination will be forwarded to It is assumed that the next hop router or gateway will then deliver the data to the required destination or forward it on to another router that will 192 168 0 72 192 168 0 34 Access Point Bridge Client 192 168 0 74 Router Client Router The above network diagram illustrates a situation where routing rules may need to be configured In this example the BU 945U E c
119. r IP Address 192 168 0 200 is the IP Address of unit C since the Modbus TCP to RTU Gateway at unit C converts the Modbus TCP message to Modbus RTU and routes it out the serial port to unit D The third mapping takes the 8 registers read by the second mapping and writes them to the serial unit A The specified Device ID 5 is the Modbus Address of the serial device A and the Server IP Address 192 168 0 196 is the IP Address of the local unit B since the local Modbus TCP to RTU Gateway is to route the message out the serial port to unit A Since the BU 945U E supports Modbus TCP Client and Server simultaneously the Modbus TCP Server for unit B above could also be enabled This would allow one or more external Modbus TCP Clients anywhere on the extended wired or wireless network to connect to unit B and monitor the status of the I O registers including the I O at units A C and D This is a very powerful and flexible feature which could for example be exploited by a central monitoring facility or SCADA Modbus TCP Configuration on 1 0 Transfer Menu Enable Modbus TCP Server Slave Check this box to enable the onboard Modbus TCP Server All Modbus TCP connections to the module IP Address and specified Modbus Server Device ID will be routed to the onboard 1 0 registers Modbus Server Device ID Specify the Modbus Device ID for the onboard Modbus TCP Server Allowed values are 0 to 255 Enable Modbus TCP Client Master Check this box to enable t
120. rase however as in example 1 the Encryption method and key can be different for each virtual link or even disabled no encryption Also the Spanning Tree Protocol is disabled as there is no possibility of network loops 34 www cooperbussmann com BussmannWirelessResources 3A1582Rev1 6 Cooper Bussmann Wireless Ethernet amp Device Server BU 945U E 802 11 DSSS User Manual Example Roaming with WDS Access Points CT CAP Roaming Stations via WDS Access Points Roaming Client SSID System SSID Virtual Station STP J Enabled Virtual Client a Virtual Client SSID SSID_A B SSID SSID_A B Site A Site B Site C Another common use for WDS is extending the range across a large wireless network but allowing roaming connections between access points or being able to switch to the next Access Point when out of range of the previous Access Point The diagram above shows a bridging network with a number of Access Points all with the same SSID network structure etc so as the Stations can freely roam between Access Points Each Access Point then needs a separate connection to the next Access Point which is done using the WDS Virtual Access Points and Stations Site B is acting as a Virtual AP for Site A which in turn is acting as a Virtual Station At the same time Site B is also acting as a Virtual Station for Site C which in turn is acting as a Virtual AP This setup can be replicated to extend the range and will allow any Roa
121. ration has been saved Subnet Mask 255 255 255 0 System Address ESSID BU 245U E TEST Select Quick Start from the Main Radio Encryption None F Menu and then you need to select WPA Passphrase Ca the following parameters Quick Start Configuration Operating Mode Access Point or Client Bridge operation is assumed for Router selection go to the Network page after Quick Start Default Gateway This is the address that the device will use to forward messages to remote hosts that are not connected to any of the local bridged network Ethernet or Wireless IP Address Subnet Mask IP Address and Subnet Mask for your application System Address ESSID The system address is a text string 1 to 31 characters in length used to identifies your system Radio Encryption Radio encryption selection None WPA PSK TKIP WPA PSK AES or WPA2 refer to the Network Configuration section if WEP or Enterprise encryption is required WPA Passphrase 128bit Encryption keys are internally generated based on the Passphrase and System Address ESSID The Passphrase must be between 8 and 63 characters in length and must be the same for all BU 945U E units in the same system The default settings will be shown If your system is connecting individual devices which are not connected to an existing Ethernet LAN then you can use the factory default IP values If you are connecting to an existing LAN then you need to change the IP addresses to match your LAN a
122. re Virtual Modules to an Access Point as illustrated in the diagram at the start of the section Each virtual module can be configured with one of the standard Wi Fi operating modes Access Point or Station or a non standard Point to Point mode e Access Point and Station virtual modules allow for the possibility of dynamically created connections based on SSID and support WPA Encryption A combined maximum of 5 AP and STA virtual modules can be configured per unit e Point to point mode virtual modules provide static connections based on MAC addresses and cannot support WPA Encryption Point to point virtual modules should only be used for establishing WDS connections with third party Access Points that do not support standard WDS operation There are many different ways to setup wireless networks often it depends on the devices you wish to connect and the existing network topology The following pages show some examples of how to connect devices into different types of systems 3A1582Rev1 6 www cooperbussmann com BussmannWirelessResources 33 Cooper Bussmann Wireless Ethernet 4 Device Server BU 945U E 802 11 DSSS User Manual Extending range Repeaters Example Extending range using WDS One of the most common uses for WDS is to extend the range of the wireless network using repeaters The diagram above illustrates a simple example where the four Access Points are all at fixed locations each of the Access Points could of
123. received to RS 232 Serial Port Link Established on Ethernet port Activity on Ethernet port Data sent from RS 485 Serial Port Data received to RS 485 Serial Port Digital Input is grounded Digital Output is active Digital Output OFF and Input is open circuit The green OK LED on the front panel indicates correct operation of the unit This LED turns red on failure as described above When the OK LED turns red shutdown state is indicated On processor failure or on failure during start up diagnostics the unit shuts down and remains in shutdown until the fault is rectified During Module boot up the OK LED flashes RED GREEN until the boot sequence is complete Boot Status LED Indication during Start up The OK LED indicates the status of the module during the boot up process At power on the OK LED comes on RED During kernel boot the OK LED flashes Red Green at a 1Hz rate 12 second red 2 second green During module initialization the OK LED flashes Red Green at 0 5H7 rate 1 second red 1 second green When initialization is complete the OK LED switches to green continuously If the OK LED remains red at power on this could indicate either low supply voltage The module will not attempt to boot until supply voltage is within range Module fault or a long boot delay To check if the boot delay is the problem plug a terminal into the RS 232 serial port and configure for 115 200 baud 8 data no parity 3A1582Rev1 6 www cooperbu
124. ress Media Access Control address A unique code assigned to most forms of networking hardware The address is permanently assigned to the hardware so limiting a wireless network s access to hardware such as wireless cards is a security feature employed by closed wireless networks But an experienced hacker armed with the proper tools can still figure out an authorized MAC address masquerade as a legitimate address and access a closed network Every wireless 802 11 device has its own specific MAC address hard coded into it This unique identifier can be used to provide security for wireless networks When a network uses a MAC table only the 802 11 radios that have had their MAC addresses added to that network s MAC table will be able to get onto the network NAT Network Address Translation A network capability that enables a number of computers to dynamically share a single incoming IP address from a dial up cable or XDSL connection NAT takes the single incoming IP address and creates new IP address for each client computer on the network NIC Network Interface Card A type of PC adapter card that either works without wires Wi Fi or attaches to a network cable to provide two way communication between the computer and network devices such as a hub or switch Most office wired NICs operate at 10 Mbps Ethernet 100 Mbps Fast Ethernet or 10 100 Mbps dual speed High speed Gigabit and 10 Gigabit NIC cards are also availabl
125. router interface allows traffic to be routed to an Access Point on a different network and therefore requires configuration of an IP address to reflect the network address of the destination network WDS router interfaces cannot provide the redundancy of bridge interfaces but can be used to reduce radio bandwidth requirements because the router can determine the destination based on IP address whereas the bridge must go through a learning phase where all broadcast traffic must be retransmitted on each interface Routed networks may also be used in some cases to avoid the overhead introduced by the bridge Spanning Tree Protocol when network loops exist Each WDS interface may also be configured with a different encryption algorithm however each side of a single WDS link must specify the same encryption algorithm and keys Specify SSID for AP STA modes or MAC Address for Point to point mode Router IP and Subnet should be left blank unless that WDS interface is to be on a different subnet Leaving these fields blank will mean that the WDS interface will be bridged with the default wireless interface When adding WDS router interfaces you may also need to add a Routing Rule on the Routing configuration page Spanning Tree Protocol STP column only applies when two or more interfaces are bridged A maximum of 10 WDS Connections can be configured A combined maximum of 5 AP and STA virtual modules applies WDS Connections are made by adding one or mo
126. rs will not reflect on the original authors reputations Finally any free program is threatened constantly by software patents We wish to avoid the danger that redistributors of a free program will individually obtain patent licenses in effect making the program proprietary To prevent this we have made it clear that any patent must be licensed for everyone s free use or not licensed at all The precise terms and conditions for copying distribution and modification follow Terms and Conditions This License applies to any program or other work which contains a notice placed by the copyright holder saying it may be distributed under the terms of this General Public License The Program below refers to any such program or work and a work based on the Program means either the Program or any derivative work under copyright law that is to say a work containing the Program or a portion of it either verbatim or with modifications and or translated into another language Hereinafter translation is included without limitation in the term modification Each licensee is addressed as you Activities other than copying distribution and modification are not covered by this License they are outside its scope The act of running the Program is not restricted and the output from the Program is covered only if its contents constitute a work based on the Program independent of having been made by running the Program Whether that is true depen
127. rtual interfaces at each end point of a WDS link have the same network structure this ensures that the WDS links at either end point are not bridged with their default interface e A consequence of using a different network address for the WDS link between Sites A and B is that we now need to configure a routing rule at both Site A amp B so that the BU 945U E can determine where to send traffic destined for the respective network addresses of A and B For example if Site B receives traffic destined for network 192 168 0 x i e somewhere on Site A s network the routing rule specifies that the traffic must be forwarded to the end point of the WDS link to Site A The routing rules for Site B are shown below for more information on routing rules refer to the section 3 12 Routing Rules 3A1582Rev1 6 www cooperbussmann com BussmannWirelessResources 37 Cooper Bussmann Wireless Ethernet 8 Device Server BU 945U E 802 11 DSSS User Manual e The second WDS entry above specifies a WDS link from Site B as a virtual Access Point interface and like the WDS link to Site A we use a different Router IP address 169 254 5 X than the default interface Note that this network address is also different to that used for the WDS link to Site A so that these separate WDS interfaces are not internally bridged In addition the WDS link to unit A a routing rule is added to direct traffic destined for the network address of unit C 192 168 6 x e The third W
128. running for such interactive use in the most ordinary way to print or display an announcement including an appropriate copyright notice and a notice that there is no warranty or else saying that you provide a warranty and that users may redistribute the program under these conditions and telling the user how to view a copy of this License Exception if the Program itself is interactive but does not normally print such an announcement your work based on the Program is not required to print an announcement These requirements apply to the modified work as a whole If identifiable sections of that work are not derived from the Program and can be reasonably considered independent and separate works in themselves then this License and its terms do not apply to those sections when you distribute them as separate works But when you distribute the same sections as part of a whole which is a work based on the Program the distribution of the whole must be on the terms of this License whose permissions for other licensees extend to the entire whole and thus to each and every part regardless of who wrote it Thus it is not the intent of this section to claim rights or contest your rights to work written entirely by you rather the intent is to exercise the right to control the distribution of derivative or collective works based on the Program In addition mere aggregation of another work not based on the Program with the Program or with a work b
129. s ESSID BU 945U i Desired BSSID 00 00 00 00 00 00 Radio Encryption None Save Changes Save Changes and Reset Configure Encryption Settings on Security Page You will now need to go to the Security Menu and enter in the encryption keys WEP passphrase WPA etc Encryption Keys 1 to 4 These are the keys used to encrypt radio data to protect data from unwanted eavesdroppers when WEP Encryption is selected These keys should be the same for all BU 945U E units in the same system One of the four keys may be selected as the default key and is used to encrypt transmitted messages from the configured unit A BU 945U E can receive and decrypt a message from a module that has a different default key index as long as each module has the same key configured at the same index WEP keys must be entered as pairs of hexadecimal digits separated by colons Hexadecimal digits are in the range 0 9 and A F WEP Configuration Authentication Mode Open M Default WEP Key 2a WEP Key 1 01 0D 12 1E 23 01 0D 12 1E 23 01 02 03 WEP Key 2 02 0E 13 1F 24 02 0E 13 1F 24 01 02 03 WEP Key 3 03 0F 14 19 25 03 0F 14 19 25 01 02 03 WEP Key 4 04 09 15 1A 26 04 09 15 1A 26 01 02 03 Save Changes Save Changes and Reset 64bit WEP requires 10 Hexadecimal digits and 128bit WEP requires 26 Hexadecimal digits For example 12 AB EF 00 56 for 64bit encryption and 12 AB EF 00 56 15 6B E4 30 C8 05 F0 8D for 128bit encryption Encryption key
130. s TCP Client Mappings on 1 0 Transfer Menu Local Register Enter the starting onboard I O register number that the specified Modbus Master transaction will transfer 1 0 to from 1 0 Count Specify the number of consecutive 1 0 register to be transferred for the specified transaction Function Code Specify the Modbus Function Code for the transaction Destination Register Enter the starting 1 0 register number in the destination device that the specified Modbus Master transaction will transfer I O to from Device ID Enter the Modbus Device ID of the destination Modbus device Server IP Address Specify the IP Address of the destination Modbus TCP Server for the specified transaction Response Timeout Enter the timeout in milliseconds to wait for a response to the specified transaction Comm Fail Register En ter the onboard 1 0 Register number to store the communication status of the specified transaction The Specified register will be set to O if communications is successful OxFFFF if there is no connection to the specified server or OXFFxx where xx is the Modbus Exception Code 3 18 Module Information Configuration Module Information Webpage Fields This configuration page is primarily for informati on purposes With the exception of the password the information entered here is displayed on the home configuration webpage of the BU 945U E Username Configuration of Username This is the username used to access the configuration
131. s must not be all zeros i e 00 00 00 00 00 When WPA Encryption is selected 128bit Encryption keys are internally generated based on the Passphrase and System Address ESSID The Passphrase must be between 8 and 63 characters in length and the Passphrase must be the same for all BU 945U E units in the same system 26 www cooperbussmann com BussmannWirelessResources WPA Preshared Key Configuration WPA Passphrase passphrase Save Changes Save Changes and Reset 3A1582Rev1 6 Cooper Bussmann Wireless Ethernet 8 Device Server BU 945U E 802 11 DSSS User Manual For optimal security a passphrase consisting of a combination of letters and numbers i e not just a simple word or phrase as well as upper and lower case E g WiReLeSs TeChNoLoGy 2010 WPA Enterprise Supplicant Configuration Username Password User credentials that match a valid user on the RADIUS server Enable Debug Must only be used during commissioning and only if requested by Cooper Bussmann Support This must be disabled for normal operation Trusted CA Certificate Upload Upload the certificate of the issuer of the RADIUS server s certificate This enables the Supplicant to verify the identity of the RADIUS server during the authentication process Certificate Verification result Once a certificate has been loaded this text box will contain validation information for the certificate If this text is blank or contains errors the certificate is
132. sages back to LAN A will need to have their Gateway addresses directed to the BU 945U E on their respected networks i e a LAN B device needs to send data back to LAN A The Gateway address will need to be configured as 169 254 109 40 as this is the IP address of the wired side of the LAN B BU 945U E Any message coming in with a 192 168 0 X IP address will be directed across the wireless interface to LAN A The Routing Rules configuration page can be accessed by selecting the Routing link on any of the configuration web pages Up to 30 routing rules may be added to each BU 945U E The table below summarizes the configurable parameters of a routing rule Routing Rules Add Entry Name Destination Netmask Gateway Enabled 1 Route to LANB 169 254 109 0 255 255 255 0 192 168 0 74 v 2 OUAI 169 254 102 0 255 255 255 0 192 168 0 73 Notes Name A name to describe the routing rule Max 32 characters Destination The destination network or host IP address to specify a network address set the host address to O i e for an IP address 192 168 0 0 with Netmask 255 255 255 0 would specify a destination network while 192 168 0 16 specifies a destination host Subnet Mask The subnet mask for the destination network Gateway The IP address of the next hop router for the specified destination Enabled Check this box to enable the rule You can Uncheck the box to disable a routing rule without needing to re enter the i
133. same network e Set DIP switch to SETUP e Power up unit and wait for LINK led to cease flashing e Adjust PC network settings e Set Configuration PC network card with network setting of IP address 192 168 0 1 netmask 255 255 255 0 e Open configuration webpage with Internet Explorer at address 192 168 0 1XX e When prompted for password enter default username user and password user e Enter Network and select Operating Mode as Access Point e Device Mode should be set to Router e Set the Gateway IP address to 192 168 0 1 e Set the Ethernet IP address to 192 168 0 200 network mask 255 255 255 0 e Set the Wireless IP address to 169 254 102 54 network mask 255 255 255 0 e Select the Radio Encryption required and enter encryption keys or passphrase if necessary e Set DIP switch to RUN e Click on button Save to Flash and Reset Webpage will display that message indicating details are being written to flash Wait for BU 945U E to reboot before removing power Enter a System Generator String Client Configuration Perform the same configuration steps as the Access Point configuration with the following differences e Enter Network and select Operating Mode as Client e Device Mode should be set to Bridge e Set the Gateway IP address to 169 254 102 54 e Set the Ethernet IP address to 169 254 102 53 network mask 255 255 255 0 e Set the Wireless IP address to 169 254 102 53 network mask 255 255 255 0 e Click on but
134. smann com BussmannWirelessResources 3A1582Rev1 6 Cooper Bussmann Wireless Ethernet 8 Device Server BU 945U E 802 11 DSSS User Manual CHAPTER 1 INTRODUCTION The BU 945U E Industrial 802 11 Wireless Ethernet module provide wireless connections between Ethernet devices and or Ethernet wired networks LAN s and complies with relevant IEEE 802 11 standard BU 945U E 802 11 630mW max power The BU 945U E uses a 900 MHz Direct Sequence Spread Spectrum DSSS wireless transceiver There are four bands with each band utilizing different frequencies and bandwidths dependent on the country and their radio regulations See Section 3 2 Selecting a Channel for a more detailed overview The BU 945U E unit also provides two serial connections as well as the Ethernet connections It is possible to use all three data connections concurrently allowing the BU 945U E to act as a Device Server Wireless connections can be made between serial devices and Ethernet devices The BU 945U E provides connection functionality between serial Modbus RTU devices and Ethernet Modbus TCP devices Appropriate driver applications will be required in the host devices to handle other protocols The BU 945U E has a standard RJ45 Ethernet connection which will operate at up to 100Mbit sec The module will transmit the Ethernet messages on the wireless band at rates between 1 and 54 Mbit sec amp 6 and 54 Mbit sec depending on model band encryption methods a
135. some changes made may cause loss 0f the radio link and therefore the network connection It is advisable to determine the path of the links to the modules you wish to modify and draw a tree diagram if necessary Modify the modules at the leaves of your tree diagram These will be the furthest away from your connection point in terms of the number of radio or Ethernet links In a simple system this usually means modifying the Client modules first and the Access Point last 3A1582Rev1 6 www cooperbussmann com BussmannWirelessResources 53 Cooper Bussmann Wireless Ethernet 8 Device Server BU 945U E 802 11 DSSS User Manual 3 21 Configuration Examples Setting a BU 945U E to Factory Default Settings Access configuration webpage on the BU 945U E Refer section 3 3 e Click on System Tools Menu Item e Click on Factory Default Configuration Reset and wait for unit to reset While the module executes the reset sequence the OK LED will flash The OK LED will turn green when the reset sequence is complete Client 1 Bridge LAN HUB i l 192 168 0 0 AE a Netmask RSen j 255 255 255 0 TA a Access Point Client 2 Bridge aka bi Lami zi i RSA l Ethernet Devices ma B Extending a Wired Network Access Point Configuration e Connect straight through Ethernet cable between PC and BU 945U E e Ensure configuration PC and BU 945U E are setup to communicate on the same network e Set DIP switch to SETUP mode e Po
136. ss network topologies refer section 1 1 Network Topology above The BU 945U E supports several different radio encryption schemes If utilizing any form of encryption all modules in the system that communicate with each other will need the same encryption method and encryption keys WEP Wired Equivalent Privacy encryption is the weakest encryption method defined by the original IEEE802 11 standard and uses a 40bit or 104bit key with a 24bit initialization vector to give a 64bit and 128bit WEP encryption level WEP is not considered an effective security scheme and should only be used if it is necessary to interoperate with other equipment which does not support more modern encryption methods WPA Wi Fi Protected Access is a subset of the IEEE802 11i Security Enhancements specification The BU 945U E supports WPA 1 TKIP and WPA 2 AES using a Pre Shared Key PSK e TKIP Temporal Key Integrity Protocol enhances WEP by using 128 bit encryption plus separate 64bit Tx and Rx MIC Message Integrity Check keys e AES Advanced Encryption Standard the most secure encryption method is also based on 128 bit encryption key and is the recommended encryption method in most applications WPA Enterprise 802 1x removes the need to manage the Pre shared Key PSK by using an external server to provide client authentication Clients that are not authorized will be prevented from accessing the network Once a client has provided the correct authe
137. ssages to remote hosts that are not connected to any of the local bridged network Ethernet or Wireless This is only required if the wired LAN has a Gateway unit which connects to devices beyond the LAN for example Internet access If there is no Gateway on the LAN set to the same address as the Access Point that is the Ethernet IP Address below Refer to section 3 13 Routing Rules for more information Checking this item enables DHCP client on the BU 945U E A DHCP client requests its IP address from a DHCP server which assigns the IP Address automatically For more information refer to section 3 8 DHCP Server Configuration Default is unchecked This is the unique hardware address of the BU 945U E and is assigned in the Factory The BU 945U E has two MAC addresses one for each interface Ethernet and Wireless The Ethernet MAC is the primary MAC Address The IP address of the BU 945U E on its wired Ethernet Interface port and wireless Wireless Interface port This should be set to the IP address you require If the device mode is set to bridge then the wired and wireless ports will have the same IP address The IP network mask of the BU 945U E on its wired Ethernet Interface port and wireless Wireless Interface port This should be set to appropriate subnet mask for your system Typically 255 255 255 0 A BU 945U E wireless network comprises modules with the same system address Only modules with the sam
138. ssmann com BussmannWirelessResources 57 Cooper Bussmann Wireless Ethernet 8 Device Server BU 945U E 802 11 DSSS User Manual 4 2 Diagnostic Information Available Connectivity The Connectivity webpage displays connections and available networks The Connected Devices section displays the radio channel received signal strength and radio data rate for each Client or Access Point by their MAC Address The readings shown are based upon the last received data message from the Access Point or Client Client stations also display a list of detected Access points Site Survey including network name SSID channel and maximum data rate Note that when updating the Connectivity webpage it is necessary to hold down the lt ctrl gt key while pressing the refresh button Otherwise the information will not be updated Connected Devices wid ADDR AID CHAN RATE RSSI BGND CAPS 06 12 af 00 3d 86 1 15 4 50M 73 96 ESs Connectivity Parameters AID Association ID Every Client gets a unique temporary ID from the AP CHAN Channel What radio channel is being used RATE Radio Data Rate RSSI Radio Signal Strength Index Amount of received signal strength BGND Background interference level in dBms The amount of internal noise the radio is able to hear This level does not indicate external radio interference noise level CAPS Capabilities Ref 802 11 Standard Site Survey Site Survey is a one off snapshot showing what Access Points are av
139. sue between IE6 and SSL security web sites Default Configuration The default factory configuration of the BU 945U E is e Client Bridge e P address192 168 0 1XX where XX is the last two digits of the serial number the default IP address is shown on the printed label on the back of the module e netmask 255 255 255 0 e Username is user and the default password is user The BU 945U E will temporarily load some factory default settings if powered up with the Factory Default switch on the end plate of the module in SETUP position When in SETUP mode wireless operation is disabled The previous configuration remains stored in non volatile memory and will only change if a configuration parameter is modified and the change saved Do not forget to set the switch back to the RUN position and cycle power at the conclusion of configuration for resumption of normal operation Accessing Configuration for the First Time Because the Default IP address is in the range 192 168 0 XXX it may not connect to you network or PC so there are two methods for accessing the configuration for the first time Method 1 Change your computer settings so that the configuring PC is on the same network as the BU 945U E with factory default set tings This is the preferred method and is much less complicated than the second method You will need a straight through Ethernet cable between the PC Ethernet port and the BU 945U E The factory def
140. t layer options Choose the protocol to use TCP Buffer Length o mw Max Segment Size _ TCP No Delay 1 Figure 7 When Jperf screen appears select Client Mode enter in IP address of the Server PC leave Port as default and press Run Iperf button The test will run again and the Bandwidth Throughput display will show results of the test Note Jperf runs using Java technology and depending on PC setup further installation of Java software may be required 3A1582Rev1 6 www cooperbussmann com BussmannWirelessResources 77 Cooper Bussmann Wireless Ethernet 8 Device Server BU 945U E 802 11 DSSS User Manual APPENDIX E GNU Free Doc LICENSE Version 2 June 1991 Copyright C 1989 1991 Free Software Foundation Inc 51 Franklin Street Fifth Floor Boston MA 02110 1301 USA Everyone is permitted to copy and distribute verbatim copies of this license document but changing it is not allowed Preamble The licenses for most software are designed to take away your freedom to share and change it By contrast the GNU General Public License is intended to guarantee your freedom to share and change free software to make sure the software is free for all its users This General Public License applies to most of the Free Software Foundation s software and to any other program whose authors commit to using it Some other Free Software Foundation software is covered by the GNU Lesser General Public License instead You can
141. t number falls within the range specified the packet is matched Note Configuration pages use TCP protocol on ports 80 and 443 Create Whitelist rules specifying the configuration PC s IP address with TCP protocol ports 80 and 443 42 www cooperbussmann com BussmannWirelessResources 3A1582Rev1 6 Cooper Bussmann Wireless Ethernet 8 Device Server BU 945U E 802 11 DSSS User Manual Select Blacklist or Whitelist Add Entry Delete Entry Enable IP Address Min IP Address Max Port Min Port Max Protocol Save Changes Save Changes and Reset ARP Filter Configuration Blacklist will prevent all listed devices from accessing the module and using the radio link Whitelist will allow devices with the IP addresses listed to communicate with the module and utilize the radio link All other devices are blocked Add a row to the table of IP Address filter rules Delete the currently selected IP address filter rule Check this box to enable the rule These set the range of IP addresses All addresses within the specified range are affected by the rule When the protocol is set to TCP or to UDP this is the range of port addresses to which the rule applies When protocol is set to All or to ICMP these settings have no effect This chooses the protocol to which the rule applies The rule can apply to Any protocol All or to only one of TCP UDP or ICMP Ping Save changes to non volatile memory Reset is required to act
142. t of this is similar to bridging for a single device with some exceptions One of these exceptions is the inability to handle name server searches of the network via this serial link For example you would encounter difficulty if you were to use Windows Explorer over the serial link to find a PC on the wired network For this to operate correctly you must explicitly map computer names to IP addresses in the LMHOSTS file on your PC To configure Windows XP to establish a PPP connection to a BU 945U E in SETUP mode follow these steps 1 On Network Connections in Windows XP select Create a new connection 2 On the New Connection Wizard click Next 3 Set up an advanced connection 4 Connect directly to another computer 5 Set PC as guest 6 Set Connection Name 7 Select a COM port 8 Select availability 9 Click Finish 10 Select properties of this new connection by right clicking on connection 11 General Tab click on Configure button 12 Ensure maximum speed is 115200bps click OK 13 Select Networking Tab click on Internet Protocol TCP IP in list box and then click Properties button 14 On Properties form click Advanced button 15 On Advanced TCP IP Settings form General Tab uncheck field in PPP link stating Use IP header compression 16 Configuration is now complete Click on this newly created link to establish a connection to BU 945U E 17 Ensure both the username and the password are entered exactly as conf
143. to control compilation and installation of the executable However as a special exception the source code distributed need not include anything that is normally distributed in either source or binary form with the major components compiler kernel and so on of the operating system on which the executable runs unless that component itself accompanies the executable If distribution of executable or object code is made by offering access to copy from a designated place then offering equivalent access to copy the source code from the same place counts as distribution of the source code even though third parties are not compelled to copy the source along with the object code 4 You may not copy modify sublicense or distribute the Program except as expressly provided under this License Any attempt otherwise to copy modify sublicense or distribute the Program is void and will automatically terminate your rights under this License However parties who have received copies or rights from you under this License will not have their licenses terminated so long as such parties remain in full compliance 5 You are not required to accept this License since you have not signed it However nothing else grants you permission to modify or distribute the Program or its derivative works These actions are prohibited by law if you do not accept this License Therefore by modifying or distributing the Program or any work based on the Program you ind
144. to save the configuration by selecting Save Changes or by selecting Save Changes and Reset before pressing the Save to flash and reset button Some field changes may stop the radio link from working and will 5 Note If making changes to a remote module via the radio link please make Sure all changes are compliant and accurate require a hard wire connection to change back 24 www cooperbussmann com BussmannWirelessResources 3A1582Rev1 6 Cooper Bussmann Wireless Ethernet 8 Device Server BU 945U E 802 11 DSSS User Manual Network Settings Webpage Fields Operating Mode Device Mode Bridge STP Bridge Priority Default Gateway Obtain IP Address Automatically MAC Address IP Address IP Subnet Mask System Address ESSID Desired BSSID Radio Encryption Save Changes Save Changes and Reset 3A1582Rev1 6 Used to select Access Point Infrastructure Client Infrastructure By default this is set to Client Used to select Bridge or Router mode By default this is set to Bridge Checking this box enables Spanning Tree protocol in bridged networks See to section 3 10 Spanning Tree Algorithm Redundancy for more details This is the priority associated with the Spanning tree protocol Use lower numbers to move this station towards the root of the Spanning Tree and use higher number here to move the station towards the leaves of the tree This is the address that the device will use to forward me
145. ton Save to Flash and Reset Webpage will display that message indicating details are being written to flash Wait for BU 945U E to reboot before removing power Extending Range of a Network with a Repeater Hop Configure units as described in the Extending a wired network example above Place the Access Point at the remote intermediate repeater location Additional repeaters can be added using Wireless Distribution System WDS refer section 3 11 Multiple AP Repeater Mesh Network for further details Access 192 168 0 0 Point 255 255 255 0 Client 2 56 www cooperbussmann com BussmannWirelessResources 3A1582Rev1 6 Cooper Bussmann Wireless Ethernet 8 Device Server BU 945U E 802 11 DSSS User Manual CHAPTER 4 DIAGNOSTICS 4 1 Diagnostics Chart LED Indicator OK OK OK OK OK Radio RX Radio RX TX LINK TX LINK RS 232 RS 232 LAN LAN RS 485 RS 485 DIO DIO DIO Condition GREEN RED Continuously RED At Power On Fast Flash RED GREEN Slow Flash RED GREEN GREEN flash RED flash GREEN RED Flash GREEN flash RED flash ON Flash GREEN flash RED flash GREEN RED OFF Meaning Normal Operation Supply voltage too low OR Internal Module Fault Boot Loader delay at start up Module Boot Sequence Module Boot Sequence Radio receiving data Radio receiving data Low Signal strength Connection Established to remote device Radio Transmitting Data sent from RS 232 Serial Port Data
146. traffic destined for the network 192 168 0 X should be forwarded to unit A via WDS link address 169 254 0 2 e Also the routing rule for directing traffic to unit C will be similar except the Destinations IP address will be 192 168 6 0 with a Netmask of 255 255 255 0 indicating all traffic for the 192 168 6 X network will be routed trough the WDS link address 169 254 5 4 This is the WDS Router IP address that Site C has been configured with for its WDS link to Site B Units A and C would also require similar pairs of routing rules to direct traffic to the network addresses at the end points of their respective WDS links Refer to section 3 12 Routing Rules for further information on routing rules The WDS Configuration page as seen above is accessible from the Repeaters link on any of the configuration web pages The configurable WDS parameters are summarized below Add Entry Add an entry to the WDS Connections table This adds a virtual station to the device Delete Entry Delete the currently selected entry in the WDS Connections table To select a row click anywhere in the row with the mouse to highlight the entire row 38 www cooperbussmann com BussmannWirelessResources 3A1582Rev1 6 Cooper Bussmann Wireless Ethernet 8 Device Server BU 945U E 802 11 DSSS User Manual WDS Connections Connection Mode Specify the connection mode for this link AP Downlink configures the connection as a virtual access point Sta Uplink c
147. twork Analysis software such as the freely available Wireshark program will list broadcast traffic sent on the network For example in the figure below Device B needs to communicate with Device E via modems C amp D The Filtering requires that at Modem C has Device B in its Whitelist and Modem D has Device E in its Whitelist With this filtering Device A will be not be able to access Device E as Device A is not present in the Whitelist in Modem C 192 168 0 71 192 168 0 72 Access Point Client Bridge If an erroneous configuration has prevented all access to the module SETUP mode may be used to restore operation 3A1582Rev1 6 www cooperbussmann com BussmannWirelessResources 41 Cooper Bussmann Wireless Ethernet 8 Device Server BU 945U E 802 11 DSSS User Manual MAC Address Filter Configuration MAC addresses are uniquely assigned to each device and so can be used to permit or deny network access to specific devices through the use of Blacklists and Whitelists In theory MAC filtering allows a administrators to permit or deny network access to hosts associated with the MAC address though in practice there are methods to circumvent this form of access control through address modification The MAC filter entry will match only the source MAC address in the packet Note It is important to add the MAC Address of the configuration PC when creating a Whitelist If the configuration PC is not on the Whitelist it will be unable
148. urther information is detailed below Each BU 945U E module should be effectively earthed via the GND terminal on the back of the module this is to ensure that the surge protection circuits inside are effective 2 2 Antenna Installation The BU 945U E module will operate reliably over large distances however the achievable distances will vary with the application radio model type and location of antennas the degree of radio interference and obstructions such as buildings or trees to the radio path The maximum range achievable depends on the radio model the regulated RF power permitted in your country and whether you use separate transmit and receive antennas e A BU 945U E 900MH72 with a single antenna 6 2 miles can be achieved in USA Canada 4W ERP and 10km in Australia New Zealand 1W ERP To achieve the maximum transmission distance the antennas should be raised above intermediate obstructions so the radio path is true line of sight The modules will operate reliably with some obstruction of the radio path although the reliable distance will be reduced Obstructions which are close to either antenna will have more of a blocking affect than obstructions in the middle of the radio path The BU 945U E modules provide a diagnostic feature which displays the radio signal strength of transmissions refer Chapter 4 Diagnostics Line of sight paths are only necessary to obtain the maximum range Obstructions will reduc
149. uter STP Mode Address Subnet 1 Sta Uplink SSID B WEP 64 bi 01 00 12 1E 23 2 Sta Uplink SSID_C WPA2 PSK AES M PassPhrase Site A WDS configuration Repeaters Page configured with two Virtual Clients to Sites B amp C Encryption levels and key above are shows as being different however they can be the same as in some of the earlier examples One reason why the Encryption level and key would be different is because the Access Point may have clients that communicate using a different Encryption method e g 128 bit WEP and may not support the same Encryption method 36 www cooperbussmann com BussmannWirelessResources 3A1582Rev1 6 Cooper Bussmann Wireless Ethernet amp Device Server BU 945U E 802 11 DSSS User Manual Example WDS Routed Network An example of using WDS router interfaces to achieve a similar physical topology to the WDS bridge example discussed earlier is illustrated below ui Site B 192 168 6 X SSID_B Virtual Client SSID SSID AA 169 254 0 3 WDS Bridge LAN 192 168 5 X SSID D X S PS5Z 69L 18 N094 SGM 192 168 0 X SSID A EF Virtual AP Virtual Station WDS Routed 192 168 6 X Network SSID_C Site C In both examples there are four WDS Access points each with the possibility of having their own client stations associated In both examples A B C and D can all exchange data with each other The bridged example has the advantage of redundancy but at the
150. vided and may be engaged by operating the single DIP switch in the end plate next to the RS485 terminals The DIP switch should be in the 1 or on position to connect the resistor If the module is not at one end of the RS485 cable the switch should be off MODEM RS485 CONNECTIONS 3A1582Rev1 6 www cooperbussmann com BussmannWirelessResources 13 Cooper Bussmann Wireless Ethernet amp Device Server BU 945U E 802 11 DSSS User Manual a BU 945U E 13N43HL3I HALAS did 1 Mv33Q Shorter runs of 485 cables may not require the termination resistors to be enabled elelee 0 COM Di RS485 SUPPLY 14 www cooperbussmann com BussmannWirelessResources 3A1582Rev1 6 Cooper Bussmann Wireless Ethernet 8 Device Server BU 945U E 802 11 DSSS User Manual 2 5 Discrete Digital Input Output The BU 945U E has one on board discrete digital I O channel This channel can act as either a discrete input or discrete output It can be monitored or set remotely or alternatively used to output a communications alarm status If used as an input the I O channel is suitable for voltage free contacts such as mechanical switches or NPN transistor devices such as electronic proximity switches PNP transistor devices are not suitable Contact wetting current of approximately 5mA is provided to maintain reliable operation of driving relays The digital input is connected between the DIO terminal and common
151. wer up unit and wait for the OK LED to cease flashing e Adjust PC network settings e Set Configuration PC network card with network setting of IP address 192 168 0 1 netmask 255 255 255 0 e Open configuration webpage with Internet Explorer at address 192 168 0 1XX where XX is the last two digits of the module s serial number e When prompted for password enter default username user and password user e Click Network and select Operating Mode as Access Point e Select Device Mode as Bridge e Change the Gateway IP Address to 192 168 0 1 e Change the Ethernet and Wireless IP addresses to 192 168 0 200 e Change Ethernet and Wireless Subnet masks to 255 255 255 0 e Enter a System Address ESSID string e Select the Radio Encryption required e Set DIP switch to RUN e Save the changes and unit will restart with new settings 54 www cooperbussmann com BussmannWirelessResources 3A1582Rev1 6 Cooper Bussmann Wireless Ethernet 8 Device Server BU 945U E 802 11 DSSS User Manual Client 1 Configuration e Perform the same configuration steps as the Access Point configuration with the following differences e Set the Ethernet and Wireless IP addresses of BU 945U E to 192 168 0 201 e Set the Operating Mode to Client e Ensure the ESSID and Radio Encryption method match the Access Point e f encryption is used ensure the encryption keys or passphrase match the Access Point Client 2 Configuration e As above however set the Eth

Cooper Bussmann BU-945U-E 802.11 DSSS Network Card User Manual

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