CL4790 Manual - Digi-Key
Contents
1. Load File Di Baud Rate 5 sod E Write Radio Read Radio 4 2 1 1 ConnexLink Settings Interface Baud Rate This defines the baud rate used for communicating with the CL4790 over the serial interface The RF baud rate is fixed at 76 8 Kbps and is independent of the Interface Baud Rate The default baud rate setting is 57600 bps unless the units have been pre configured by AeroCcomm The Interface Baud Rate setting of the CL4790 must match the Baud Rate setting of its host device Random Back Off Random BackOff determines the random amount of time a transceiver waits when a collision occurs before resending the packet again The amount of randomness is controlled by this parameter Channel Number A number that designates an independent network of CL4790 units Up to 32 independent networks can be created The valid range of values for this field is 16 to 47 6 24 2005 16 CL4790 Users Manual Max Transmit Retries This value represents the maximum number of times a particular data packet will be transmitted unsuccessfully or without an acknowledgement before the CL4790 discards the packet The default value is 4 attempts If communication is lost and the Link LED is on try increasing this value in small increments until communication is reestablished Note This value is always associated to radios in Point to Point network The valid range of values for this field is 2 to 255 Broadcast Attempts This value represents the2. displays error message Radio 2 Read the radio and make desired changes 2 Read the radio and make desired not responding and then Write the radio changes and then Write the radio Garbled Data 1 Check Data Encryption Standard settings 1 Check Data Encryption Standard received settings Client s Link LED 1 Make sure the unit is connected to power 1 Make sure Server CN4790 unit is does not come powered up on 2 Cycle power to the radio 2 Cycle power to the radio Link LED is on 1 Make sure the CL4790 unit s is connected to 1 Make sure the CN4790 unit s IP but data does the correct COM Port Address is right not get transmitted or 2 Check the COM port settings for correct Baud 2 Try increasing the Maximum Transmit received Rate Parity and either Hardware or No Flow Attempts for Clients and or Broadcast Control Units can have transmission errors Attempts for Servers values in small with Flow Control set to Xon Xoff increments until communication is established 3 Try increasing the Maximum Transmit Attempts for Clients and or Broadcast Attempts for 3 Check the Destination Address setting Servers values in small increments until communication is established 4 Connect a Null Modem adapter between the Client and its host device 5 Check the Destination Address setting If these troubleshooting tips do not resolve the problem please call our toll free number at 800 492 2320 extension 207 Techni
3. is prevented from replacing the antenna with a non approved antenna The end user should also be prevented from being within 20cm of the antenna during normal use with the exception of hands feet wrists and ankles The preceding statement must be included as a CAUTION statement in manuals for OEM products to alert users on FCC RF Exposure compliance 6 24 2005 Caution Any change or modification not expressly approved by AeroComm could void the user s authority to operate the equipment Table of Contents ES SCENE Eeer 1 Le ATT 4 ES HHT 4 1 CL4790 RF TRANSCEIVER T 5 1 1 OVER VIEW tat a EE Ee s 5 1 2 CLA790 SPECIFICATION eege A A ES 6 1 3 CLA 790 RN E 7 2 INTERFACING PROTOCOL esesesescesoscesescsccosececesessscsosocscssesssccosocecssesssesosocsossee 10 ZEW EE 11 22 RS 485 2 WIRE HALF DUPLEX EEN 12 2 3 HARDWARE FLOW CONTROL sees 13 3 NETWORK TOPOLOGIES eesesescsocsoscesescsccocscsossescsccosscscesessesesssccosoceossesssesosocsossee 14 Sr EREECHEN eeben Etgen e a aS ERA 14 3 2 POINT TO MULTIPOINT asiri eer a E AE ed r EES 14 4 CL4790 CN4790 CONFIGURATION UTILITY SOFTWARE ssssss ss ssss sss 15 G SI ARIEN B AA dee eg 15 4 2 CLA790 CN4790 NEE 15 ADA CLATIO Settin GS inns nena e a EE 16 E Settini S enm eae a a A EA E aa 22 5 TROUBLESHOOTING geess ee 28 Figures Figure 1 RS 232 RS 485 CL4790 Front View 7 Figure 2 RS 232 CL4790 Back VIEW eee 8 Figure 3 RS 485 CL4790 Back View 8 Figure A CL4790 Mec
4. number of times a data packet will be transmitted by the CL4790 when in Broadcast mode The default value is 4 attempts If communication is lost and the receiving radio s Link LED is on try increasing this value in small increments until communication is reestablished Note This value is always associated to radios in Point to Multipoint network The valid range of values for this field is 2 to 255 System Identification A number from 0 to 256 that provides added security to each independent network of CL4790 units The System ID is used in conjunction with the Channel Number and serves as an RF password to maintain secure transfers of data The combination of the Channel Number and System ID must be unique to each network of CL4790s to establish communication Multiple transceivers in the same coverage area must be programmed with different Channel Numbers to prevent inoperability of the networks The System ID will not prevent inoperability that occurs from locating multiple transceivers with the same Channel Number in the same coverage area Important Note Separate Collocated CL4790 networks must operate on different Channel Numbers All units in a given CL4790 network must have identical Channel Numbers and System IDs Data Encryption Key Encryption is the process of encoding an information bit stream to secure the data content The DES algorithm is a common simple and well established encryption routine An encryption key of 56
5. transceivers use hardware flow control to regulate data flow While using hardware flow control the transceiver that is ready to receive data sends a Clear To Send signal to its host or the device it is connected to On the other hand when a transceiver has something it wants to send to its host it checks the state of Ready To Send and if itis logic low will send data to its host If RTS is logic high it will not send data to its host These signals are sent apart from the data itself on separate wires Note CTS is always enabled by default RS 485 Interface does not support Hardware flow control 6 24 2005 13 CL4790 Users Manual 3 Network Topologies Topology refers to the shape of a network or the network s layout How different nodes ina network are connected to each other and how they communicate is determined by the network s topology The CL4790s support a Point to Point and a Point to Multipoint network topology 3 1 Point to Point A point to point system is a simple arrangement consisting of just two CL4790s Sometimes referred to as a wireless bridge a point to point link replaces a single communications cable A point to point link might be used to connect a PLC to a remote monitoring station Figure 8 Point to Point Network OEM HOST ee OEM HOST Remote Monitoring CL4790 PLC Station 3 2 Point to Multipoint Point to Multipoint systems have one base station or access point that controls communications wi
6. DAEROCOMM CL4790 Industrial 9OOMHz ConnexLink User s Manual Version 1 0 11160 THOMPSON AVENUE LENEXA KS 66215 800 492 2320 www aerocomm com Sales aerocomm com Document Information Copyright Copyright 2004 AERoComM Inc All rights reserved Information The information contained in this manual and the accompanying software programs are copyrighted and all rights are reserved by AEROComM Inc AEROComM Inc reserves the right to make periodic modifications of this product without obligation to notify any person or entity of such revision Copying duplicating selling or otherwise distributing any part of this product without the prior consent of an authorized representative of AEROComM Inc is prohibited All brands and product names in this publication are registered trademarks or trademarks of their respective holders This material is preliminary Information furnished by AEROCowM in this specification is believed to be accurate Devices sold by AEROCoOMmM are covered by the warranty and patent indemnification provisions appearing in its Terms of Sale only AEROCOMM makes no warranty express statutory and implied or by description regarding the information set forth herein AEROCOMM reserves the right to change specifications at any time and without notice AEROCOMM products are intended for use in normal commercial applications Applications requiring extended temperature range or unusual environmental req
7. Recess 3 5w x 2 0h 0 150 dia mounting holes i 4 places 2 375 Oo p 9 Pin Male D Connector UU 2 000 2 750 J3 Status LEDs Power Jack w 0 100 dia pin and 0 250 opening pin is PWR 0 375 D pa J4 Pwr Link Rx Tx 0 000 Top View Q O LO Ue oQ O Q 1O Kal ice O LO ou Q 0 E CH CH CH zt vt vt Note All dimension in inches unless noted 6 24 2005 9 CL4790 Users Manual 2 Interfacing Protocol The CL4790 is a DCE Data Communications Equipment A DCE can be interfaced to a DTE using a straight through serial cable the serial cable provided with the CL4790 is a straight through cable Typically PC s are defined as a DTE and peripherals are defined as DCE To interface a DCE with another DCE ora DTE with another DTE a null modem or a Crossover cable is required The null modem simply swaps pins to convert a DCE to a DTE and vice versa A null modem cable can be provided with the CL4790 on request The CL4790 transceivers support the following interface protocols e RS 232 e RS 485 2 wire Half Duplex Table 1 DTE DCE and Null Modem Signal Definitions DCE Pin DCE Signal DCE DTE Pin DTE Signal DTE Null Modem Null Modem Number Name Direction Number Name Direction Female DB9 Male DB9 6 24 2005 10 CL4790 Users Manual 2 1 RS 232 RS 232 is a single ended data transmission protocol The RS 232 signals are represented by voltage levels with respect to a system common
8. a 2 Although the 7 bytes of overhead are not sent over the RF they are keptin the buffer until the packet is sent Keep this in mind so as to not overrun the 256 byte buffer 3 Setting MAC to FFh FFh FFh will broadcast the packets 6 24 2005 18 CL4790 Users Manual Consider the example of a remote temperature monitoring system where temperature readings are obtained from sensors attached to the transceivers at remote locations This application may require polling each and every transceiver individually and obtaining the temperature reading When the Transmit API is enabled the packets are dynamically routed with out requiring any configuration i e change the destination address every time the packet is transmitted This makes it easy when hundreds of transceivers need to be polled Send Data Complete When Send Data Complete is enabled the transceiver sends the OEM Host the following data upon receiving an RF Acknowledge from the remote transceiver or exhausting all attempts 00h Failure RSSI 01h Success 1 The RSSI is how strong the remote transceiver heard the local transceiver RSS is how strong the local transceiver heard the remote transceiver 2 Successful RF Acknowledge updates the Success Failure bit 3 When the transceiver is transmitting Broadcast Packets it will always return success after exhausting all Broadcast Attempts 4 API Send Data Complete can be used as a software send data complete indi
9. anges have been made select Write Radio to save the changes Cycle Power to the unit after all changes has been saved This will set the CL4790 unit to its normal mode of operation 6 24 2005 21 CL4790 Users Manual 4 2 2 CN4790 Settings The CN4790 Settings Page is shown below as it will appear the first time the CN4790 check box is checked CN4790 Configuration Utility ConnexNet Settings RF Delivery Options Random BackDif Broadcast Parity C Auto Destination Full Duplex Channel Number Range 16 47 C Destination Address Data Encryption EE Range 0 255 Ignore Broadcast API Modes T Auto Channel Broadcast Attempts Range 0 255 aoe s System Identification Range 0 255 l Send Data Complete Destination Address hex Data Encryption Key DDR N Firmware Version d MAC Address PC Settings ConnexLink ConnexNet Help About IP Address 192 168 0 11 Save to Fie Load File _ Im Port White Radio Read Radio 4 2 2 1 ConnexLink Settings Random Back Off Random BackOff determines the random amount of time a transceiver waits when a collision occurs before resending the packet again The amount of randomness is controlled by this parameter Channel Number A number that designates an independent network of CN4790 units Up to 32 independent networks can be created The valid range of values for this field is 16 to 47 Max Transmit Retries This value represents the m
10. aximum number of times a particular data packet will be transmitted unsuccessfully or without an acknowledgement before the CN4790 discards the packet The default value is 4 attempts If communication is lost and the Link LED is on try increasing this value in small increments until communication is reestablished Note This value is always associated to radios in Point to Point network The valid range of values for this field is 2 to 255 6 24 2005 22 CL4790 Users Manual Broadcast Attempts This value represents the number of times a data packet will be transmitted by the CN4790 when in Broadcast mode The default value is 4 attempts If communication is lost and the receiving radio s Link LED is on try increasing this value in small increments until communication is reestablished Note This value is always associated to radios in Point to Multipoint network The valid range of values for this field is 2 to 255 System Identification A number from 0 to 256 that provides added security to each independent network of CN4790 units The System ID is used in conjunction with the Channel Number and serves as an RF password to maintain secure transfers of data The combination of the Channel Number and System ID must be unique to each network of CN4790s to establish communication Multiple transceivers in the same coverage area must be programmed with different Channel Numbers to prevent inoperability of the networks The System ID will no
11. bits is used to encrypt the packet The receiver must use the exact same key to decrypt the packet otherwise garbled data will be produced Destination Address The MAC Address of the remote CL4790 in a Point to Point network Used to optimize Point to Point communications by utilizing RF Acknowledgement Firmware Version Displays the CL4790 s firmware version MAC Address A unique 6 Byte IEEE 802 3 Ethernet address assigned by AeroCcomm to each CL4790 4 2 1 2 RF Delivery Broadcast Enables Broadcast mode When enabled the transceiver will send its packets to all transceivers on that network Auto Destination Enables Auto Destination mode When enabled the transceiver sets its destination address to the address of the radio from which it received a packet first Destination Address Enables Addressed mode When enabled the transceiver can send or receive data from a transceiver specified by the Destination Address box in the ConnexLink Settings 6 24 2005 17 CL4790 Users Manual 4 2 1 3 Optional Settings Data Encryption Enables the Data Encryption Key All CL4790s in the same network must have the same encryption setting RTS Enable Enables the Request To Send control line When enabled enables Hardware Flow Control Refer to Section 2 3 Hardware Flow Control Parity Needs to be enabled if host requires even or odd parity and 8 data bits This is considered as 9 bit mode Note Enabling Parity cuts the overall t
12. cal support hours are Monday through Friday 8 00 am to 5 00 pm Central Standard Time 6 24 2005 28
13. cator 5 The transceiver could receive a failure even though the packet was received as it could have missed the RF Acknowledge from the remote transceiver When the Send Data Complete is enabled an RF Acknowledge is received for every packet that has been transmitted This would be very useful in cases where the information sent is vital and OEM Host needs to retry and send the message again in case of a failure Receive API When Receive API is enabled upon receiving a packet the radio sends its OEM Host the packet in the following format Payload Data Destination The RSSI is how strong the remote transceiver heard the local transceiver RSSI is how strong the local transceiver heard the remote transceiver 6 24 2005 19 CL4790 Users Manual Consider a remote temperature monitoring system where the transceivers have to transmit their temperature reading periodically When the Receive API is enabled every data packet received has also the information about the transceiver that transmitted the packet This information is very useful in identifying the transceiver and analyzing its wireless link The Transmit API Send Data Complete and Receive API can be used in any combination to suit different applications OEM Host OEM Host Receive Send Data Transmit API API Complete packet packet RF Transmit Packet Local Transceiver RE Acknowledge Remote Transceiver Note When both Send Data Complete and Receive API on the API M
14. d Spectrum modulation where the units hop from frequency to frequency many times per second using a specific hop pattern applied to all the transceivers in the same network A distinct hopping pattern is provided for each Channel Number thereby allowing multiple networks to co exist in the same area without interference CL4790 transceivers operate in a Masterless architecture The unique feature of this architecture is its dynamic Session extension and Collision Avoidance mechanism which uses a proprietary scoring system to promote contention free communication and ensure that each node has fair access to the network This instinctive dynamic peer to peer networking architecture enables several transceiver pairs to carry on simultaneous conversations on the same network CL4790s implementa proprietary communication protocol to provide secure data transmissions As it uses FHSS technology the data remains reliable over long distances Use of license free frequency bands ensure that the units are ready to use with no further certification requirements Each unit is small and easily portable for use in mobile and temporary settings as well as for fixed installations The CL4790 configuration software enables custom configurations based on unique application requirements 6 24 2005 5 CL4790 Users Manual 1 2 CL4790 Specification Specifications CL4790 1000 Output power 1000mW Transmission range Up to 1500 feet 450
15. hanical Diagramm 9 Figure 5 RS 232 Male Female Connector Pin out 11 Figure 6 DCE to DTE UE ee Ee 11 Figure 7 DCE to DCE Utara esses sca ae ante cacuate ese eter alan Sadar assess 12 Figure 8 Point to Point NOtWOIK tics c vicsisccrtcocsavsaebonesssonvedederadaevsbonsanteatonagasenteiesderateveed 14 Figure 9 Multiple Networks of Point to Multipoint CL47905 eee 14 Tables Table 1 DTE DCE and Null Modem Signal Definitions eee 10 6 24 2005 4 CL4790 Users Manual 1 CL4790 RF Transceiver The CL4790 transceiver is a Frequency Hopping Spread Spectrum FHSS radio designed for license free operation in the 900MHz ISM band Out of the box the radio sustains a standard asynchronous Serial data stream between two or more radios Housed in a compact and rugged die cast enclosure the radio is equipped to replace thousands of meters of serial cable with its wireless link The radio features an RS 232 or RS 485 interface for integration into legacy data systems Features v Masterless True peer to peer each module can communicate with any other module within its range v API commands to control packet routing and acknowledgement on a packet by packet basis v Durable Industrial grade enclosure v Transparent operation supports any legacy system v Transmits around corners through walls v Reliable communication up to 115 2Kbps v Point to Point and Point to Multipoint setups 1 1 Overview The CL4790 uses Frequency Hopping Sprea
16. hroughput into half Full Duplex This mode the transceivers intelligently shares the bandwidth to enable Full Duplex Though the RF hardware is still technically half duplex it makes the transceiver seem full duplex This can cause overall throughputs to be cut in half Note All transceivers on the same network must have the same setting for Full Duplex Modem Mode Full modem handshaking is supported by the transceivers when Modem Mode is enabled Modem Mode is incompatible with RS 485Interface Enables DCD DTR DSR and Ring Indicator control lines Ignore Broadcast When enabled a transceiver ignores all the broadcast packet it receives 4 2 1 4 API Mode API Control is a powerful feature that the Masterless Protocol offers When enabled the Transmit API Send Data Complete and Receive API features provide dynamic packet routing and packet accounting ability to the OEM Host thereby eliminating the need for extensive programming on the OEM Host side This ability of the protocol makes it ideal for any legacy system Transmit API When Transmit API is enabled the OEM Host should use the following format to transmit a packet over the RF Payload Data Session Length Count Transmit Retries Broadcast Attempts Destination MAC 2 1 0 Payload Data 1 80h Refresh 1 Ifthe OEM Host does not encode the header correctly the transceiver will send the entire string up to 80h bytes and will look for the header in the next dat
17. led the OEM Host should use the following format to transmit a packet over the RF Payload Data Session Length Count Transmit Retries Broadcast Attempts Destination MAC 2 1 0 Payload Data 1 80h Refresh 1 If the OEM Host does not encode the header correctly the transceiver will send the entire string up to 80h bytes and will look for the header in the next data 2 Although the 7 bytes of overhead are not sent over the RF they are keptin the buffer until the packet is sent Keep this in mind so as to not overrun the 256 byte buffer 3 Setting MAC to FFh FFh FFh will broadcast the packets 6 24 2005 24 CL4790 Users Manual Consider the example of a remote temperature monitoring system where temperature readings are obtained from sensors attached to the transceivers at remote locations This application may require polling each and every transceiver individually and obtaining the temperature reading When the Transmit API is enabled the packets are dynamically routed with out requiring any configuration i e change the destination address every time the packet is transmitted This makes it easy when hundreds of transceivers need to be polled Send Data Complete When Send Data Complete is enabled the transceiver sends the OEM Host the following data upon receiving an RF Acknowledge from the remote transceiver or exhausting all attempts 00h Failure RSSI Olh Success 1 The RSSI is how strong the re
18. m indoors Up to 20 miles 32 km line of sight Data rate Up to 115 2 Kbps RF Data Rate 76 8kbps fixed Receiver Sensitivity 100dBm typical 76 8kbps RF Data Rate Power Consumption 12 Vdc 400mA Configuration software Easy to use Windows based software Frequency band RF Technology 902 928 FHSS USA 915 928 FHSS Australia Supported Network Topologies Point to Point Point to Multipoint Channels 32 Security One byte System ID 56 bit DES encryption key RF Connector RPSMA J ack Type 1 2 Wave Dipole Electrical requirements Line voltage 100 120V 240V outside US Power supply 6 foot cable AC power connector Environmental conditions Operating temperature 40 to 80 C 10 to 90 humidity non condensing Dimensions 4 4 x 2 7 x 1 4 inches Weight 6 oz 170 g Serial Connector DB 9 Male RS 232 Terminal Block RS 485 Serial Cord length 6 feet 183 cm 6 24 2005 CL4790 Users Manual 1 3 CL4790 Interface The CL4790 supports RS 232 RS 485 2 wire Half Duplex protocols By definition RS 485 protocol can tolerate high noise and push signals over long cable lengths When using cables RS 485 will communicate as far as 4000feet 1200m and offer multi drop capability where up to 32 nodes may be connected RS 232 cables are suitable for distances less than 100 feet 30 5m AeroComm wireless
19. mote transceiver heard the local transceiver RSS is how strong the local transceiver heard the remote transceiver 2 Successful RF Acknowledge updates the Success Failure bit 3 When the transceiver is transmitting Broadcast Packets it will always return success after exhausting all Broadcast Attempts 4 Abl Send Data Complete can be used as a software send data complete indicator 5 The transceiver could receive a failure even though the packet was received as it could have missed the RF Acknowledge from the remote transceiver When the Send Data Complete is enabled an RF Acknowledge is received for every packet that has been transmitted This would be very useful in cases where the information sent is vital and OEM Host needs to retry and send the message again in case of a failure Receive API When Receive API is enabled upon receiving a packet the radio sends its OEM Host the packet in the following format Payload Data Destination The RSSI is how strong the remote transceiver heard the local transceiver RSSI is how strong the local transceiver heard the remote transceiver 6 24 2005 25 CL4790 Users Manual Consider a remote temperature monitoring system where the transceivers have to transmit their temperature reading periodically When the Receive API is enabled every data packet received has also the information about the transceiver that transmitted the packet This information is very useful in identifying the tra
20. nnex Tools amp Literature CD This software is also available at http www aerocomm com S oftware Driver CL4790 900Mhz v 1 zip 2 When prompted accept the default directory or change to the desired directory where the program files will be installed 3 When finished a window will be displayed indicating a successful installation Select OK 4 2 CL4790 CN4790 Settings The configuration utility can be used to configure both CL4790 and CN4790 The configuration utility defaults to CL4790 configuration when it is loaded it can be used to configure the CN4790 by checking the CN4790 check box on the configuration page 6 24 2005 15 CL4790 Users Manual 4 2 1 CL4790 Settings The CL4790 Settings Page is shown below as it will appear the first time the program is run CL4 790 Configuration Utility ConnesxLink Settings RF Delivery Options Broadcast ATS Enable C Auto Destination Parity Random BackOff C Destination Address P Full Duplex l Channel later Range 16 47 T Data Encryption API Modes T Ignore Broadcast Max Transmit Retries Range 0 255 SW Transmit API T Auto Channel Broadeast Attemate Range 0 255 T Receive API T Send Data Complete System Identification Range 0 255 Destination Address hex Interface Baud Rate pa THE eA Data Encryption Key l D D D D D D MAC Address PC Settings ConnexLink C ConnexNet Help Port Communications Port COM1 D Save to File
21. nsceiver and analyzing its wireless link The Transmit API Send Data Complete and Receive API can be used in any combination to suit different applications OEM Host OEM Host Receive Send Data Transmit API API Complete packet packet RF Transmit Packet Local Transceiver RE Acknowledge Remote Transceiver Note When both Send Data Complete and Receive API on the API Mode is enabled Send Data Complete is to be received before the transceiver gets a Receive API packet i e receives another packet before it gets an acknowledge for a packet sent However this order may get reversed when the Send Data Complete packet is missed and is being resent after the Receive API packet is received Note The API Mode over writes all the RF Delivery settings 4 2 2 5 PC Settings IP Address IP Address of the CN4490 unit Port Port number of the CN4490 unit the Port number is always 2101 6 24 2005 26 CL4790 Users Manual 4 2 2 6 Programming the CN4790 units KI Mr rs ob TOi A ek Si 6 24 2005 Connect a CN4790 unit to the serial communications port on the PC Connect the power supply to the CN4790 unit Make sure the Pwr LED is on Start the CN4790 Configuration Utility Select the COM Port that is connected to the CN4790 unit on the PC Settings section Select the Interface Baud Rate of the CN4790 unit All CN4790 units are shipped with a default rate of 57600 unless units have been pre configured to match specific se
22. ode is enabled Send Data Complete is to be received before the transceiver gets a Receive API packet i e receives another packet before it gets an acknowledge for a packet sent However this order may get reversed when the Send Data Complete packet is missed and is being resent after the Receive API packet is received Note The API Mode over writes all the RF Delivery settings 4 2 1 5 PC Settings Port Serial communications port of the PC connected to the CL4790 unit Baud Rate Must equal the Interface Baud Rate setting of the CL4790 unit that is about to be programmed 6 24 2005 20 CL4790 Users Manual 4 2 1 6 Programming the CL4790 units KI Mr eI cb S OO ek Si Connect a CL4790 unit to the serial communications port on the PC Connect the power supply to the CL4790 unit Make sure the Pwr LED is on Start the CL4790 Configuration Utility Select the COM Port that is connected to the CL4790 unit on the PC Settings section Select the Interface Baud Rate of the CL4790 unit All CL4790 units are shipped with a default rate of 57600 unless units have been pre configured to match specific serial settings If the Interface Baud Rate of the CL4790 unit is changed as described in Section 4 2 Changing CL4790 Settings then PC Setting Baud Rate must be set to the same Baud Rate to allow proper programming of the units Select Read Radio to display the current settings of the CL4790 unit Change desired settings After all ch
23. on Address box in the ConnexLink Settings 6 24 2005 23 CL4790 Users Manual 4 2 2 3 Optional Settings Data Encryption Enables the Data Encryption Key All CN4790s in the same network must have the same encryption setting Parity Needs to be enabled if host requires even or odd parity and 8 data bits This is considered as 9 bit mode Note Enabling Parity cuts the overall throughput into half Full Duplex This mode the transceivers intelligently shares the bandwidth to enable Full Duplex Though the RF hardware is still technically half duplex it makes the transceiver seem full duplex This can cause overall throughputs to be cut in half Note All transceivers on the same network must have the same setting for Full Duplex Modem Mode Full modem handshaking is supported by the transceivers when Modem Mode is enabled Modem Mode is incompatible with RS 485Interface Enables DCD DTR DSR and Ring Indicator control lines Ignore Broadcast When enabled a transceiver ignores all the broadcast packet it receives 4 2 2 4 API Mode API Control is a powerful feature that the Masterless Protocol offers When enabled the Transmit API Send Data Complete and Receive API features provide dynamic packet routing and packet accounting ability to the OEM Host thereby eliminating the need for extensive programming on the OEM Host side This ability of the protocol makes it ideal for any legacy system Transmit API When Transmit API is enab
24. power logic ground The idle state MARK has the signal level negative with respect to common and the active state SPACE has the signal level positive with respect to common RS 232 has numerous handshaking lines primarily used with modems and also specifies a communications protocol Figure 5 RS 232 Male Female Connector Pin out RS 232 DB9 Female Connector RS 232 DB9 Male Connector nl Description Pin Description _ RE DT BA RT NC RI o D d ki ki bai ki 6060 60900 O OO OO D O G L Figure 6 DCE to DTE Interface OEM Host PC CL4790 Modem DCE DTE k Haa gt Straight Through Cable 6 24 2005 11 CL4790 Users Manual Figure 7 DCE to DCE Interface OEM Host CL4790 Modem DCE Mis ee gt DCE Crossover Cable Note The Straight Through Cable provided with the CL4790 has female connectors on both ends and the Crossover cable has a male connector at one end and a female connector at the other end Please use a male to male adapter or female to female adapter wherever required Using a null modem adapter with a Crossover cable is equivalent to using a Straight Through cable 2 2 RS 485 2 wire Half Duplex The RS 485 interface uses a Differential Data Transmission that can help nullify the effects of ground shifts and induced noise signals that can appear as common mode voltages on a network The CL4790 implements a RS 485 2 wire Half Duplex mul
25. rial settings If the Interface Baud Rate of the CN4790 unit is changed as described in Section 4 2 Changing CN4790 Settings then PC Setting Baud Rate must be set to the same Baud Rate to allow proper programming of the units Select Read Radio to display the current settings of the CN4790 unit Change desired settings After all changes have been made select Write Radio to save the changes Cycle Power to the unit after all changes has been saved This will set the CN4790 unit to its normal mode of operation 27 CL4790 Users Manual 5 Troubleshooting Solution Problem CL4790 CN4790 Read Radio 1 Make sure the PC Settings are right See Section 1 Make sure the PC Settings are right See displays error 4 2 3 PC Settings Section 7 2 3 PC Settings message Radio not responding 2 Make sure the CL4790 unit uses the right serial 2 Make sure the CN4790 unit uses the cable Refer to Section 2 1 RS 232 right Ethernet cable Refer to Section 2 2 LAN Port 3 If any other program that is using the same COM port as CL4790 is open close that 3 If any other program that is using the program and try to read the radio again same LAN port as CN4790 is open close that program and try to read the radio again 4 Reset the radio by cycling power after each unsuccessful Read 4 Reset the radio by cycling power after each unsuccessful Read Write Radio 1 Cycle power to the radio 1 Cycle power to the radio
26. solutions are not subject to the cabling restrictions for distance but either interface RS 232 or RS 485 is available when ordering the CL4790s Figure 1 RS 232 RS 485 CL4790 Front View Status LEDs RPSMA Antenna Connector Pwr Link Rx Tx CL4790 Status LEDs LED Color Description Pwr Green On indicates that the unit is powered up Link Red On indicates the transceiver units are in range of one another Rx Green When flashing LED indicates CL4490 unitis receiving data Tx Red When and flashing LED indicates CL4490 unitis sending data 6 24 2005 CL4790 Users Manual RS 232 Pin Assignments Figure 2 RS 232 CL4790 Back View DB9 Male Connector Power Connector Pin Description 6 DTR EC EE A R RS 485 2 wire Half Duplex Terminal Block Pin Assignments Figure 3 RS 485 CL4790 Back View Terminal Block Power Connector Pin Description 1 WCC 6V 18V 1 3 A Required 2 485 485B 5 1485 485A GND o o O o o O 6 CND Note Standard power is applied through the power connector Alternative power is available via the terminal block pins 6 24 2005 CL4790 Users Manual CL4790 Mechanical Diagram Figure 4 CL4790 Mechanical Diagram 1 170 _ _ _ _ _ Antenna Connector SMA Jack Reverse Polarity 0 536 ___ 0 538 0 060 0 000 a Side View Label
27. t prevent inoperability that occurs from locating multiple transceivers with the same Channel Number in the same coverage area Important Note Separate Collocated CN4790 networks must operate on different Channel Numbers All units in a given CN4790 network must have identical Channel Numbers and System IDs Data Encryption Key Encryption is the process of encoding an information bit stream to secure the data content The DES algorithm is a common simple and well established encryption routine An encryption key of 56 bits is used to encrypt the packet The receiver must use the exact same key to decrypt the packet otherwise garbled data will be produced Destination Address The MAC Address of the remote CN4790 in a Point to Point network Used to optimize Point to Point communications by utilizing RF Acknowledgement Firmware Version Displays the CN4790 s firmware version MAC Address A unique 6 Byte IEEE 802 3 Ethernet address assigned by AeroCcomm to each CN4790 4 2 2 2 RF Delivery Broadcast Enables Broadcast mode When enabled the transceiver will send its packets to all transceivers on that network Auto Destination Enables Auto Destination mode When enabled the transceiver sets its destination address to the address of the radio from which it received a packet first Destination Address Enables Addressed mode When enabled the transceiver can send or receive data from a transceiver specified by the Destinati
28. th all of the other wireless nodes in the network This allows for the creation of a wireless network consisting of multiple nodes By programming each CL4790 with a network specific Channel Number and System ID multiple networks can be created see Fig 9 Figure 9 Multiple Networks of Point to Multipoint CL4790s Node Node Base Base Node Station Node Node Station Node 1 Node Node Example Channel Number 13 Example Channel Number 25 System ID 123 System ID 256 6 24 2005 14 CL4790 Users Manual 4 CL4790 CN4790 Configuration Utility Software AeroComm provides the easy to use CL4790 CN4790 Utility Software for programming the CL4790 CN4790 The GUI based software does not require any hardware configuration and works by itself The software is compatible with Microsoft Windows 95 98 2000 Me NT and XP CL4790 CN4790s are plug and play devices that work with minimal or no configuration However users may refer to the AC4790 manual for details about the radio s operation and advanced configuration commands The SDK Software can be used to evaluate the advanced configuration commands The SDK Software and AC4790 manual can be found on the Connex Tools and Literature CD or on our website at http www aerocomm com Note The users should refer to the ConnexNet manual for details about the CN4790 interface 4 1 Installation 1 Locate the CL4790 Configuration Utility 900 MHz link in the Software section on the Co
29. ti drop interface Typically a RS 485 bus will consist of a master and several slaves The nodes will have unique addresses and can send addressed packets to specific nodes Because the bus is half duplex no two nodes should try to talk at the same time The CL4790 does not have a RS 485 address therefore it will transmit all RS 485 traffic over the RF Conversely as soon as a CL4790 receives a packet over the RF it will transmit the packet over the RS 485 bus Note When using RS 485 2 wire Half Duplex a RS 485 to RS 232 converter is required to configure the unit AeroComm recommends a B amp B Electronics 4WSD9R converter to translate RS 485 to RS 232 6 24 2005 12 CL4790 Users Manual 2 3 Hardware Flow Control Flow control refers to the control of data flow between the host and the CL4790 It is the method used to handle data in the transmit receive buffer of the CL4790 interface and determines how data flow between the host and the CL4790 is throttled Often in serial communication one device is capable of sending data much faster than the other can receive Flow control allows the slower device to tell the faster device to pause and resume data transmission Flow control CTS and RTS are used by the CL4790 and its Host locally NOT over the air Therefore one CL4790 cannot tell the other to slow down or speed up as is mentioned above in the paragraph When the RTS Enable option is selected on the Configuration Utility the
30. uirements such as military medical life support or life sustaining equipment are specifically not recommended without additional testing for such application Limited Warranty For a period of one 1 year from the date of purchase AEROCOMM warrants the transceiver against defects in materials and workmanship AEROComM will not honor this warranty and this warranty will be automatically void if there has been any 1 Tampering signs of tampering or opening the transceiver s case 2 Use of AC power adapters and cables other than those originally supplied with the transceivers 3 Repair or attempt to repair by anyone other than an AEROComM authorized technician This warranty does not cover and AEROComM will not be liable for any damage or failure caused by misuse abuse acts of God accidents electrical irregularity or other causes beyond AEROCOMM control or claim by other than the original purchaser 6 24 2005 2 FCC Information FCC Notice A WARNING This device complies with Part 15 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 RF Exposure Installation Instructions A WARNING To satisfy FCC RF exposure requirements for mobile transmitting devices this equipment must be professionally installed such that the end user
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