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1. 19 EtherPath X4 User s Guide 1 IP Address The IP address of this EtherPath device on your LAN The default IP Address is 192 168 1 1 2 Subnet Mask The network mask indicates what class of TCP IP network you have The default value is for a class C network with up to 255 users This value should work in small networks If in doubt consult your network administrator 3 Gateway IP Address If the remote device this unit communicates with is not on the same LAN then the gateway to the other LAN must be entered here 4 TCP Tx Timeout This option controls whether TCP connections timeout in a normal amount of time or uses a slow timeout and takes a longer period of time to timeout Select normal or slow 5 SNMP Enable This option controls whether SNMP traffic is honored by the Etherpath or not Select enable to allow SNMP queries to be serviced disable to disallow SNMP queries 6 Web Setup Enable This option controls whether the Etherpath s web server which allows web configuration to work or not If you select disable and activate changes you will no longer be able to configure via the web interface You can always configure via the serial port Serial3 but you need physical access to the unit for serial configuration as you need to change a switch and reboot 7 Web Server Port Web clients normally look to port 80 for their connection port This port may be changed to any port other than 8000 or the por
2. cccceccesesseeeseeeeeereeeeeee 16 Chapter 4 Terminal Telnet Confi gurration sscccccsssccssccsccsecssccsecsscsessscssoree L7 Telnet Con guranion sees eee eee 18 Terminal Telnet Interface sese 19 Entering RIT 19 Menu S 19 Main Menu Option 1 Setting LAN e 19 VIP Address rcccccorsosetdassscusa cdeeaesangencsssscesed eiea ea E 20 2 Subnet Mask irs seinen cccthcoleeshugeieenedeou deaatiogipnni eeceveencee vey 3 Gateway IP Address 4 TCP Tx Timeout ik SCT Enable tren a a hae Ne 6 Web Setup Enable sse eee This option controls whether the Etherpath s web server which allows web configuration to work or not If you select disable and activate changes you will no longer be able to configure via the web interface You can always configure via the serial port Serial3 but you need physical access to the unit for serial configuration as you need to change a switch and reboot 20 T Web Server Port T 20 8 Telnet Setup Enable TTT 20 This option controls whether the Etherpath s telnet setup server waits for a user to setup the Etherpath X4 via telnet or not If you select disable and activate changes you will no longer be able to configure via the telnet interface You can always congigure via the serial port Sena sse 20 Ts Telnet Setup Porte iccccccccciesceconssccedeceeteesecss cased etcesensaversededtees 20 Main Menu Option 2 Set Admin Username and Password sss
3. 1 EtherPathX4 Setup Client Server Mode a Server Telnet Mode Done Adblock Login Screen Log in using the user name admin and no password blank field If this screen doesn t display check the Troubleshooting Section in Chapter 6 12 Troubleshooting 4 Enter Your Configuration EtherPathx4 Mozilla Firefox E lajxj Ele Edt View Go Bookmarks Tools Help G ce gt amp KA GL http 205 166 54 188 cgi bin menuform cai M S Ow 2 Search O status 313 72 Home weather C Googe a prices Protocols fy L Je DRUDGE Bid Favs MTF dictionary L MC Groups G CNET _ Misc Personal gt BE Disable a Cookiesy 57 CSS Forms J Images 7 Information Miscellaneousy YZ Outline C3 Resizer F Tools T view Source Optionsy o EtherPathxX4 Setup S Dore Adblock Initial Main Menu From this index screen you can select a section on the left and will be taken to configuration screens for each router subsystem 5 Minimum Configuration The minimum configuration items required for basic operation are 1 IP address appropriate for your LAN 2 Serial port configuration appropriate to communicate with your serial device Configure these items and the EtherPath is ready for use Help Screens and Field Edits In addition to the HELP button on the main screen the field names on all configuration screens are hyperlinks to
4. Store Config The Store Config process takes about 10 seconds to complete Do not power cycle the system until your web page refreshes This operation may cause data errors on active serial network connections T bad Store Configuration Screen This screen stores the pending configuration in the permanent memory It does not activate the changes but the changes will be activated upon the next boot or power cycle See the configuration overview chapter for more detail Notes 33 EtherPath X4 User s Guide Chapter 6 Operation This Chapter explains how to use the EtherPath once it is installed and configured Although it may be used with automated equipment such as RTUs POS or other computer based devices the example configurations shown in this chapter use terminals or terminal emulation on a PC for illustrations It is often useful to set up the EtherPath using this method before connecting other equipment Overview The EtherPath X4 operation is similar to the single port EtherPath products Each serial port on the EtherPath X4 is independent of the others with regard to protocol speed parity flow control and IP port number All four ports share the same IP address Client Server Point to Point Nailed Up Mode e Both EtherPaths must be correctly installed and configured as described in Chapters 3 or 4 One serial port device is connected to the Server EtherPath and another serial devic
5. The Administration section contains nine action buttons used to configure system wide settings and perform a few high level operations E Maintenance zai File Edit View Go Bookmarks Tools Help K gt 30 A OL BS http 205 166 54 188 cgi bin menuform cgi select Maint_Menuiform Form_maint 7 4 Oa m Search O Status 313 23 Home O Weather C Google x prices Protocols fej Je DRUDGE Bid Favs MTF dictionary L MC Groups G CNET O Misc Personal x Disable 1 Cookies E css Forms 7 Images ZZ Information Miscellaneous Z Outline 3 Resizer Tools TR View Source til Options i Maintenance Administration Tools Change admin password Ping an address Save or load config file Do a traceroute Upload firmware Sniff LAN packets View firmware information Rebootthe unit Default ALL settings Se Done Adblock Administrative Maintenance Screen Access to the Web Server is protected by HTTP Basic Authentication This is a simple methodology where the Web Server will require a Web Browser to provide a username and password for each page requested The Web Browser will typically ask the user to enter the username and password once then will remember it for the duration that the Web Browser is running The Administration screen allows you to change the user name and password for the router administrator This is the only user allowed to configure the
6. up EtherPath X4 User s Guide The device on one EtherPath communicates with the other serial port device as if it was directly connected via a serial port cable The EtherPaths and the LAN are completely transparent to PC application and serial port device Server Mode This mode requires only a single EtherPath The EtherPath is connected to the serial port device and to the LAN Users on the LAN can then connect to the serial port device and communicate with it via Telnet using any assigned IP and port address Most LAN connected workstations provide support for communication via Telnet A special purpose utility program or port redirector program may be used instead of Telnet or the user may create custom software using Visual Basic C or other network programming tools By using port redirection the EtherPath may function as a remote serial port on a PC Point to Multiple Point EtherModem Mode Point to multiple point EtherModem operation allows a single EtherPath running in client mode to connect to multiple servermode EtherPaths one at a time under the control of the attached RS 232 device The client operates similar to a modem with AT dialing enabled The attached device treats the EtherPath as if it was a modem using remote IP addresses instead of telephone numbers Reverse Telnet Telnet Client Mode This mode requires only a single EtherPath The EtherPath is connected to the seria
7. 232 link is broken it will be reconnected automatically if possible when in Hardware connect mode This operation is described in the Appendix Protocol Conversion The RS 232 device at the client end and the device at the server end of a link do not have to use the same communications protocols on the RS232 link speed parity flow control The EtherPaths will convert the data to the correct protocol Configuration Security Etherpath configuration may be Locked down or restricted in several ways The web Browser interface telnet configuration interface and SNMP configuration interfaces may be disabled Specific IP addresses may be configured into the unit to disallow configuration from any other than the desired management workstations Upgradeable Firmware Firmware upgrades are downloadable to the EtherPath The utility program required for this and the actual firmware upgrades are available from your dealer On board Tools The Etherpath X4 contains diagnostic tools such as traceroute ping and a simple packet sniffer to aid in network troubleshooting EtherPath X4 User s Guide Physical Details Front Panel The EtherPath X4 front panel is shown below EtherPathx4 Status LA 1 Pur mr L 2 2 Figure 1 EtherPath X4 Front Panel Status Red LED Rear Panel The EtherPath X4 rear panel is shown below Some units use different power connectors DRE 9 18 VDC f 18 36 VDC 36
8. 72 VDC 10 100 A dedi Figure 1 EtherPath X4 Rear Panel 1 Power port Connect the power adapter here 2 Switch Bank Configuration Switches Top Red LED LAN Activity Indicator Bottom Red LED LAN Link Indicator 8 Ethernet Port A 10 100BaseT Ethernet Port Introduction EtherPath X4 User s Guide Configuration Switches The rear panel contains four small switches numbered 1 through four left to right These are used for configuration The normal position for all switches is DOWN Switch 1 This switch immediately resets the unit When placed in the UP position it resets the router just as if it had been power cycled It should then be returned to the down position Switch 2 This switch places the unit in basic configuration mode It is used to provide a terminal interface for initial configuration Powering up the unit with this switch UP provides a terminal attached to the Serial 3 port with a login prompt and the ability to manage the unit with a command line This method is used to install an initial IP address in the router Switch 3 Factory use only Switch 4 Factory use only LED Indicators There are two red LED indicators on the rear panel adjacent to each LAN connector and four red LED indicators on the front panel near each 9 pin serial connector Introduction Rear Panel LED Indicators e The lower red LED is the Ethernet Status indicator It is lit when there is a valid 10 100B
9. IP Address using Control Panel Network TCP IP Adapter Properties or similar commands appropriate for your computer If you are using a different Address block use Terminal Mode configuration to set a compatible IP Address in the EtherPath e Check that you have used the correct port address The default address is 3000 for normal operation and 8000 for configuration e Is there a firewall in the Ethernet path If so it must be configured to pass the ports in use by the EtherPath Many trouble calls are the result of firewall changes that block the EtherPath ports e Are you trying to connect to the EtherPath data port with a web browser That only works for configuration on port 8000 e Web Browsers often are configured to use a proxy server The browser might need to be configured to NOT use the proxy when connecting to the EtherPath or the proxy server may be configured to pass the requests correctly e MOST EtherPath connection problems are due to incorrect RS 232 wiring The second most common errors are incorrect IP addressing on either the EtherPath or on the PC used for testing 40 Troubleshooting Other Problems Pi S1 P2 S2 P5 S5 P6 S6 P7 S7 Can t run the configuration program using a serial cable connection Check that e You did set the configuration switch no 2 to the UP position and power cycle the unit e The communication parameters are set properly e Disconnect
10. The CTS signal controls output flow Baud Rate Speeds between 300 bps and 230 4Kbps are supported Parity The choices are None Odd or Even Data Bits The choices are 7 or 8 This does NOT include the parity bit The two most common settings are 7 bit PLUS appropriate parity or 8 bit with NO parity Default is 8 bits Stop Bits The choices are 1 or 2 Commonly use 1 DCD Input Control If Forced On the EtherPath responds as if interface DCD Input is always high If From Interface its condition is a read from the RS 232 cabling must be correct for proper operation Client Dial Mode Set port dialing mode AT Dial Hardware DCD Dial or Nailed Up In AT dial mode modem like AT commands are used to connect to a remote server In DCD dial the client automatically connects to the remote server when the DCD signal goes high In nailed up mode the DCD signal is ignored and as soon as the client is activated it connects to the remote server Mode Server mode allows this serial port to be accessed via a raw TCP socket on this port Client mode connects the serial port to a remote server Telnet server works like server mode but the connection uses telnet standard character escaping and can also support changing baud rate stop bits and start bits using the RFC2217 protocol Client telnet allows the serial port to connect to a server which is using telnet mode Client s Remote IP Address In server mode this i
11. This setting can turn the filter function ON or OFF e When ON in Server mode all CR LF Carriage Return Line Feed and CR NULL character pairs received from the remote client are converted to CR only CR LF pairs are normally used in the MS DOS environment to mark the end of a line but may cause problems in other environments which expect a CR only e When OFF all CR LF and CR NULL character pairs are handled as normal data e This setting is ignored in Client mode 8 Client Local Character Echo If ECHO is ON the client EtherPath will locally echo all incoming characters in client mode If ECHO is OFF the client EtherPath will not echo characters or transmit any status messages to the serial port This mode should be used if any messages from the EtherPath would create interference OFF is the most commonly used value 9 Keep Alive Frequency 24 Troubleshooting Setting this parameter to a non zero value will enable a Keep Alive feature in the Unit When the Unit is in Client mode it will send Keep Alive messages to the server at the specified frequency when the link between the client and server is idle When the Unit is in Server mode it will close the connection if the link is idle for more than 3 5 times the Keep Alive Frequency The Telnet modes work differently the Server end sends Telnet NOPs and the Client end times out O OFF 1 32767 seconds 25 EtherPath X4 User s Guide Main Menu Option 5
12. and PC Remote adapter is provided with the unit Procedure 1 Connect the EtherPath to your PC or terminal using a cable 2 With configuration switch 2 in the up position power up the EtherPath 3 Start the terminal program and configure the terminal program with the following settings 17 EtherPath X4 User s Guide 4 Connect your terminal program to the appropriate port e g COM 1 5 The configuration program should now start and after a few seconds display a sign on screen If nothing appears on your screen press the Enter key Refer to Error Reference source not found on page XX for details on using the configuration program Telnet Configuration 1 Install the EtherPath into your LAN as described in Chapter 2 Ensure that the EtherPath is powered on The EtherPath must have an IP address appropriate for YOUR network 2 Connect to the EtherPath with your telnet program An example command might be telnet IP Address Port number Where IP_Address is the IP address of the EtherPath Port_number for configuration is 8000 For example if the default IP address had not been changed then you would enter the command telnet 192 168 1 1 8000 3 Refer to the following section for details on using the configuration program Troubleshooting Terminal Telnet Interface The Signon screen asks for a valid username and password Connected to etherpathx4 Escape character is Enter name Enter pass
13. and reconnect the power supply to the EtherPath e Power is available a LED is on e The most common problems causing this symptom are incorrect RS 232 wiring or the Windows Hyperterm program not operating correctly The Client EtherPath doesn t automatically connect to the Server EtherPath Check that e One unit is configured as a client the other as a server For troubleshooting note that the DTR signal is asserted as soon as a connection is active e The Client is configured for automatic connections Hardware DCD Input Dial is the correct setting s The Client should either be configured for DCD Input Control forced ON or the interface must be wired in such a way that that DCD Input is asserted e The Server s IP address was correctly entered into the Client s EtherPath in the Remote IP Address field e The Gateway IP Address is set correctly e The Subnet Mask is set correctly e The communication parameters between the PC terminal and the local Client EtherPath match e The communication parameters between the serial port device and the remote Server EtherPath match The EtherPath s IP Address is unknown Is there any way of finding it Follow this procedure e Yes see the chapter on using Terminal Configuration e Use the configuration switch and use a terminal connection to read the existing configuration Why does the Server Mode Ethe
14. earlier Power up the local EtherPath It will be in command mode awaiting a connection command Type the command AT lt enter gt to test the RS 232 connection It should answer with an OK message If not correct the RS 232 cable miswiring or terminal program problem Dial a remote telnet server by using an ATD dial command ATD1 2 3 4 5555 where 1 2 3 4 is the IP address of the remote telnet server and 5555 is the optional connection port number configured in the remote telnet server The EtherPath will automatically connect to the remote telnet server If an address or port number isn t given the values stored during configuration are used See the Appendix for a complete list of AT commands and responses If the EtherPath is in Client Echo mode you should see the message Connect OK from the client mode EtherPath when the connection is established You may now proceed as if the remote telnet server was connected to the serial port of your workstation Disconnect from that remote telnet server with either the command or by lowering the hardware lead on pin six Method 2 Hardware Dial mode This mode operates with the Hardware dial DCD Input setting In this mode the EtherPath connects to the configured IP address as soon as RS 232 DCD Input is asserted The EtherPath must be configured for Hardware DCD Input dialing and dip switches set for client Start th
15. eee 21 Main Menu Option 3 S etSerial Port Data sacri jacdac iad a a a 21 Flow Controls on mit acaaintl eae nik ed hohe eae 21 Baud Rates artis R yest E E RTS 22 ii Introduction s Data Bits Stop Bits DCD Input H a T T 22 Chient Dial Le sans centages aise ee 22 Set port dialing mode AT Dial Hardware DCD Dial or Nailed Up In AT dial mode modem like AT commands are used to connect to a remote server In DCD dial the client automatically connects to the remote server when the DCD signal goes high In nailed up mode the DCD signal is ignored and as soon as the client is activated it connects to the remote server 22 IMO TTT 22 Client s Remote IP Address ccecceescesseeseceseceeeenseeseeeeeneeeeesaes 22 Server Ethernet Port Main Menu Option 4 Advanced Configuration Screens esse eee eee 23 1 Transmit Timer ine ci cusiccea ct eatteesds das cbecbereta ces tacos cuetveuncscan teases tees 23 M Timer Mode Zz Block Sihri ta aT TTS cuca betes Wk eee renee 3 Flow Control OFF Buffer Level 24 4 Flow Control ON Buffer Level 24 5 Line_Terminator_Character ccccceesceseeseeeeceseeeseceeeneeeaees 24 6 Transmit_on_LT_Char 7 Server End of Line FIG 24 8 Client Local Character Echo 24 9 Keep Alive Frequency ceccsccssccssseeecesceseceseceeeeeeeeeeeneeesaes 24 Setting this parameter to a non zero value will enable a Keep Alive feature in the Unit When the Unit is in Client
16. you activate the new configuration Otherwise it may be necessary to return to the old stored configuration with a reset Upload new Firmware File From time to time new versions of firmware are made available These may be uploaded to the EtherPath using this screen After obtaining a new firmware image file make it available on the workstation and use this function to upload it to the EtherPath View Firmware Information Use this screen to view firmware version information as well as copyright notices Default ALL settings This allows you to set the EtherPath to default values for all configuration items Note that the IP address is also defaulted to 192 168 1 1 If that is not appropriate for your network you will lose connectivity with the EtherPath until you reset the IP address Tools There are several diagnostic tools available on the EtherPath X4 Ping an Address Simple IP ping command This button sends four echo packets PING to the entered address Perform a Traceroute Perform a Traceroute action on the entered address Sniff LAN Packets This runs TCPDUMP like packet sniffing and displays the packet headers for a given address port or the entire ethernet interface Reboot the Unit Forces a hard reboot on the EtherPath 31 EtherPath X4 User s Guide Activate Changes EtherPathx4 Mozilla Firefox al x File Edit View Go Bookmarks Tools Help 3 te gt z amp G A GL ER http 205 166 54 188 c
17. 2 have no connection on pin 1 and pin 2 Control Signal Operation DTR Output This signal is held at the asserted state when a logical connection is present on the ethernet port Receive Data Output Data from the EtherPath The port only transmits when it has characters to send and it is not flowed off with software or RTS CTS flow control Transmit Data Input Data into the EtherPath DCD Input The EtherPath will only accept virtual connections if this input is asserted or it s configured as forced high in the port configuration Not connected on port one and port two Troubleshooting Signal Ground Common ground DSR Output always asserted Not connected on port one and port two RTS Output Input flow control signal When the internal buffer reaches the Flow Off buffer level this signal is lowered When the buffer level decreases to the Flow ON buffer level this signal is raised CTS Input When Flow Control is set for CTS RTS lowering this signal will halt data flow from the unit s RS 232 port RS 422 PIN Assignments RJ 45 Connector This pinout is used only on Port 1 of the EtherPath X4 model when configured for RS 422 Internal jumpers must be set for the RS 422 configuration The RJ 45 RS 422 port wiring contains the signals of a standard DCE port on a space saving RJ 45 connector This is sometimes known as 4 wire RS 485 The chart below details signal directions and names Pin
18. 5cable Connect the cable between serial port 3 and your PC s COM port The terminal device may be a PC running the Hyperterm or ProComm communications program or equivalent U Power up the unit After about 5 seconds a login screen will appear on the terminal screen Welcome to the EtherPathX4 v1_0 To start the Serial Setup Program login with the name setup Login Screen 4 The unit will boot up pausing at a login screen For initial setup enter the login name setup in lower case letters No password is required 10 Troubleshooting 5 The main command line menu will then be displayed See the Telnet Command line configuration section for configuration information For a quick start you may only need to set the IP address using option 1 Set LAN properties Welcome to the EtherPathX4 version v1_0 Setup Program 1 Set LAN properties 2 Set name password 3 Set Serial port parameters 4 Set Advanced port parameters 5 Display Configuration 6 Reset Configuration to Defaults 7 Save and Exit 8 SNMP configuration 9 Exit without saving Select a function by number gt 6 After making your changes select option 7 The unit will now compress these values and save the configuration to flash memory Do not cycle power during this time or the unit may be rendered inoperable 9 Return switch 2 to the down position The Final Screen shows the URL to use when configuring th
19. Display Settings Selecting 5 from the Main Menu displays a screen similar to the following example Select a function by number gt 5 LAN Configuration IP Address 205 166 554 188 Subnet Mask 255 255 255 0 Gateway IP Address TCP Tx Timeout normal SNMP enable disable Web Setup Enable enable Web Server Port 80 Telnet Setup Enable enable Telnet Setup Port 8000 press return for more Name Password Configuration Username admin Password press return for more Port Configuration port 1 Baud Rate 9600 Flow Control none Parity none Data Bits 8 Stop Bits 1 Client Dial Mode nailed up Mode server Client s Remote IP Address Server Ethernet Port 3000 Advanced Serial Port Configuration port 1 Transmit Timer ms 20 Timer Mode transmit timer Block Size 512 Line terminator Character Decimal 0 255 Transmit On LT Char off Server End Of Line Filter off Client Local Character Echo off Keep Alive Frequency 1 32767 Seconds 120 SNMP Configuration Contact Person Supervisor Device Name GW3B004822 Physical Location Head Office SNMP Community public press return for more 13 Note that no data can be changed Pressing any key from the above screen will return you to the Main Screen All data items except the following have been explained on the preceding pages 26 Troubleshooting Main Menu Option 6 Reset Configuration to Default Selecting 6 from the Ma
20. Ether Pat h X4 Serial Server User s Guide Revised April 5 2012 Firmware Version 1 09 FCC Statement This device complies with the limits for a Class B digital device pursuant to Part 15 of the FCC rules Operation is subject to the following two conditions 1 This device may not cause harmful interference 2 This device must accept any interference received including interference that may cause undesired operation Copyright 2006 All rights reserved Version 1 0 All trademarks and trade names are the properties of their respective owners TABLE OF CONTENTS FOC Statements een 25 s0cchscsecavsesgevocssnevitis ATE OTA EAEE E i Chapter 1 Introduction eessoesseesoessoesseesoeesoesoeesoessoeessoeeeesseosses L EtherPath Functii sneinen 1 Client Server Mode raser 522 ia a a i ie 05 1 IR a LO T Point to Multiple Point EtherModem Mode Reverse Telnet Telnet Client Mode sss sese Other Features T 2 Multiple Ports ize wees ccts athe ei E ween eat vies 2 Automatic COonnecHon esse eee eee eee 2 AT Commands Connection Recovery i fii Allee eetie ee VG eas ESA cheeses 2 ProtocoliConversions 262 4252 ia ee Bie RA atai 3 Configuration Security sineme hana Heel eat nes 3 Upgradeable Firmwate ccccccccceseeseeseeeeeeeneceseeeeeeneeeeeneeeeenaeeees 3 On board Todlss iscsicchla inna ent 8 3 Physical Detailsic s2124 divas stew Reet e 4 Brontihanel devo cats ee tc ee Nt eta oa Sat e
21. Flexibility When the EtherPath starts from a power off condition it loads an active configuration from its non volatile memory This active configuration is also copied to the working configuration Whenever the configuration screens are used to change values only the pending configuration is changed not the active configuration Using the configuration screens will change the pending configuration You may change the active configuration by copying the pending configuration over it This change is performed using the Activate Configuration screen Going to this screen activates the pending configuration by copying the pending configuration over the top of the active configuration This does not store the configuration in non volatile memory When the EtherPath is next reset or powered up it will begin using the old stored configuration from before the changes and activate command Using the store configuration screen will copy the pending configuration into Non volatile memory It will not cause this configuration to begin running the EtherPath However upon the next reset or power cycle the unit will begin using the stored configuration It is possible to activate the pending configuration using the Activate Configuration screen and then store the configuration using the Store Configuration screen This two step process will cause all three configurations to be identical 15 EtherPath X4 User s Guide Configuration Proces
22. Path s interface so that external programs that access it may be developed This is not used in most applications The information is for those writing programs to access the EtherPath via the Ethernet Introduction It is rather straightforward to implement a software application to communicate with serial devices through the EtherPath Topics covered in this appendix are e EtherPath description and behavior e Application notes e Links to sample code In addition to user written software applications there are port redirector software packages that work quite well with the EtherPath If you are not a network programmer then port redirector may be the quickest way to get an application on line For UNIX systems AIX Linux SCO5 FreeBSD OSF Termnet works quite well It is GNU d freeware available from http www dcbnet com or http www linuxlots com For Microsoft Windows systems Serial IP is an excellent low cost program also available from http www dcbnet com Description and Behavior Ports used by the EtherPath The EtherPath uses 3 ports as follows Data Port Server Mode EtherPath listens at the port and offers a raw TCP connection This port number is configurable Default is 3000 From The Client Mode EtherPath uses a sending port Port between 1025 and 4999 to connect to its Remote Host The port number starts at 1025 and increments as needed Note that EtherPath version 5 2 and
23. Signal Name Type Tanna mon ou Teras OD _ Out pin EZ L 5 Notused pin Ed SS 45 EtherPath X4 User s Guide RS 422 Port Operation Transmit Data TXD A PIN 1 Output Data from the unit This is the negative side of a balanced signal The return is on PIN 2 TXD B Transmit Data TXD B PIN 2 Output Data from the unit This is the positive side of a balanced signal The return is on PIN 1 TXD B Receive Data RXD A PIN 3 Input data into the unit This is the negative side of a balanced signal The return is on PIN 6 RXD B Receive Data RXD B PIN 6 Input data into the unit This is the positive side of a balanced signal The return is on PIN 3 RXD B CABLES Commonly used cable connections To PC 9 pin COM port EtherPath X4 Computer RJ 45 DB 25S DE 9S 1 6 or 6 2 8 or 1 3 4 or 7 4 7 or 5 5 3 or 2 6 2 or 3 7 5 or 8 8 20 or 4 This cable is used to connect with a PC COM port It may be created by using a CAT 3 cable and a PC Remote 9 pin adapter Part no 9802014 46 EtherPath X4 to PC crossover ethernet cable Troubleshooting An ethernet crossover cable may be constructed to allow the EtherPath s ethernet port to directly connect to a PC without using a hub Use the following pinout EtherPath X4 PC NY DBD WwW N 1 Ww N N A 47 EtherPath X4 User s Guide Appendix C Programming This Appendix explains the Ether
24. aseT Ethernet connection This LED flashes with activity on the Ethernet even if the activity isn t directly to this unit e The upper red LED is multi function indicator The different states indicated by these LED are described below Red LED Status Indication Description Client Mode ON Server Mode Rapid Flashing Setup Mode Irregular Power On Flashing Self Test or Firmware Download EtherPath X4 User s Guide Front Panel LED Indicators e Lower Left LED is a power indicator e Upper Left LED is a status indicator It should always be on Front Panel Port LED Indicators e OFF no DCD e ON DCD present or nailed up e FLASH 1 second no socket session e FLASH 5 second socket session active Introduction Package Contents You should find the following items packaged with your EtherSeries Router s The EtherPath Unit e Power Adapter if applicable e This User s Guide CDROM e Short cable with RJ 45 connectors e 9 pin Remote PC adapter If any of the above are missing contact your dealer immediately Software Requirements The EtherPath supports the following protocols e TCP IP e UDP e ARP e ICMP e TELNET e SNMP The EtherPath has been tested to work with e All versions of Windows e Unix SCO Sun AIX Linux etc e Macintosh e Most serial devices such as scanners RTUs SCADA hosts alarm controllers POS devices PCs terminals PBX craft ports etc e VOIP multiplexe
25. aw text file Advanced users may wish to edit this file using an appropriate text editor then transfer the changed configuration to an EtherPath Use care when performing configuration with this technique as the text configuration file must be in the proper format This method is ideal for automating the configuration of many units in a large corporate environment Troubleshooting Chapter 4 Terminal Telnet Configuration This Chapter describes how to configure the EtherPath using Terminal configuration mode or Telnet configuration mode Web Browser mode is covered in the next chapter Overview The EtherPath can be configured using any of the following methods e Web Browser After installing the EtherPath in your LAN use your Web Browser for configuration See Chapter 5 Browser Configuration for details s Terminal Mode Use a serial cable connection and a communication program The advantage of this method is that you give the EtherPath a compatible IP Address prior to installation in your network e Telnet Mode After installing the EtherPath in your LAN connect to it using Telnet for configuration Both Terminal and Telnet modes provide the same user interface Terminal Configuration Terminal configuration requires the following e PC with terminal emulation program or a dumb terminal e Serial cable to connect the PC to the EtherPath See the Appendix for cable requirements A cable consisting of a CATS line cord
26. context sensitive help screens Simply click on the field name to bring up a second window with the help information Close that window to return to your entry screen 13 EtherPath X4 User s Guide DEtherPathx4 Setup 5 7 Mozilla Firefox File Edit View Go Bookmarks Tools Help e gt 30 A GL EA http 205 166 54 188 home_hip html BIT Oa RI O search LO status 313 72 Home Weather G Google a prices Protocols fy Je DRUDGE Bid Favs MTF dictionary MC Groups CNET 7 Misc Personal 9G Disable 2 Cookies L css C Formsy 7 Images 7 Informationy Miscellaneous LZ Outliney C3 Resizer E Tools T view Source Options 2 Help EtherPathX4 Setup V5 7 Overview Each screen has its own help page Shown below is a list of all help pages Configure Port e Advanced Configuration e Configure LAN e Configure SNMP Configuration Summary Port Activity Ss http 205 166 54 188 buF_hip html Main Help Screen Entries are always tested for valid values However there are many valid values that are not appropriate for any given configuration So appropriateness isn t tested For example an IP address of 300 400 500 256 will not be accepted but the field will accept an IP address that is not appropriate for your installation 14 Troubleshooting Chapter 3 The Configuration Process This Chapter describes config
27. e router The screen below will be displayed Select a function by number gt 7 Erasing flash sector 0x10fc0000 Storing file config tar gz size 741 bytes Store complete Setup complete Return Switch 2 to the off down position 10 The unit will now reboot 2 Connect the Ethernet Cable Connect a 10BaseT or 100Base T LAN cable to the Ethernet Port and Reboot the unit with a power cycle or the reset switch The EtherPath will now be available for configuration with any web browser on the same LAN segment If your web browser does not see the EtherPath verify that you do not have a proxy server configured in the browser If so properly configure the browser to bypass the proxy server for this URL 11 EtherPath X4 User s Guide 3 Verify the IP Address Configuration Enter the URL from step 1 8 or http 192 168 1 1 if appropriate into your web browser The login screen below should be displayed JEtherPathX4 Mozilla Firefox alex file Edit dew Go Bookmarks Tools Help lt k gt C L x E GL BS http 1 205 166 54 188 cq bin menuform cal v a O s T O search LO Status 75 T3 3i Home LO Weather G Google a prices Protocols Jy L Je DRUDGE _ Bid Favs MTF dictionary L MC Groups 0 CNET i Misc Personal Disable 2 Cookes 57 gt csse S Forms Z Images 7 Information E Miscellaneous 7 Guire Resizer F Tools 7 view Source 7 Options
28. e restrict the ability of an unwanted user from changing the configuration of the EtherPathl They do not restrict the ability of a remote device to deliver packets to the EtherPath s data port At the level 0 any workstation may be used to configure the EtherPath via either telnet or web browser configuration Level restricts configuration to workstation users knowing the admin user name and password Either web based or telnet configuration is allowed Level 2 disables remote configuration using web browser telnet or SNMP in any combination Level 3 requires a user name and password for remote configuration Combinations of Level 2 and Level 3 are possible ie One may disable web browser configuration and SNMP and require a username password for telnet configuration The most secure method would be to disable all remote configuration The EtherPath may always be configured using the direct connected terminal method This requires physical access to the hardware and pressing the configuration button while a terminal or PC is connected to the serial port evel 0 No specific security configuration is required Also any user name password pairs that may have been entered on the terminal configuration telnet Security Configuration screen should be cleared evel 1 Using any configuration method configure Administrator Access user name and password That user name and password are required for configuration tasks evel 2 Using te
29. e Terminal emulation program or use a real terminal The communication settings for this device must be the same as the values entered into the Client EtherPath device earlier Power up the local EtherPath The EtherPath will automatically connect to the remote telnet server using the values stored during configuration If the EtherPath is in Client Echo mode you should see the message Connect OK from the client mode EtherPath when the connection is established You may now proceed as if the remote telnet server was connected to the serial port of your workstation Disconnect from that remote telnet server by lowering the hardware lead on pin six 36 Troubleshooting Chapter 7 Configuration Security This section discusses configuration options that restrict the configuration process Overview The EtherPath uses the industry standard IP protocol Since this is a well known standard its security vulnerabilities are also well known and may be exploited Several EtherPath options are available to enhance the inherent security of your EtherPath network However since network security is a moving target and absolute security is never achievable every network installation should be designed and implemented with care to minimize security risks in a way that is appropriate for the application and perceived risks The EtherPath may be configured with several levels of security configuration and authentication Thes
30. e is connected to the Client EtherPath One EtherPath has the operational mode set as a Server the other has the operational mode set as a Client The communication settings for the serial devices must be the same as the values entered into the EtherPath device they each attach to Power up the server EtherPath Power up the client EtherPath It will automatically connect to the remote EtherPath whose IP address was stored during configuration if hardware dialing is enabled and DCD Input is asserted You may now proceed as if the remote serial port device was directly connected to the serial port of your local serial device If DCD Input control is set to From Interface then the serial device must provide a high level signal on DCD Input before the EtherPath will accept or place an Ethernet connection Troubleshooting Server Mode Install and connect the EtherPath and Serial Port Device as described in Chapters 3 and 4 Any PC or workstation on the LAN WAN should now be able to use Telnet to connect to the Serial Port Device with the command telnet IP Address Port number Where IP_Address is the IP address of the EtherPath and Port number is the configured value default value is 3000 For example if the default IP address and port number have not been changed and they are appropriate for your network then you would enter the command telnet 192 168 1 1 3000 You should see a Connected message from
31. earlier always used port 5000 as the sending port 8000 Provides a telnet configuration service for all modes Do not use port 8000 in user written programs For user written client application avoid port number 8000 The Server will respond to any configured port number other than that 48 Troubleshooting Server Mode In Server mode the EtherPath runs under the TCP IP network protocol It will listen on a configured port number The server will wait for connection after initialization After a connection is established the server always keeps checking for data on both Ethernet and Serial Ports If data from the Ethernet network is received it will first check for a special control symbol filter it if found and then send the rest of the data to the serial port If data from the serial port is received it will read the data from the serial buffer move the data into the network buffer and send it by Ethernet to the application when the buffer is full or on the next tick of the transmit timer Transmit Conditions The EtherPath will transmit an Ethernet packet when any of these conditions are met e Transmit Timer is up and running in Transmit Timer Mode e Idle Timer is up and running in Idle Timeout Mode e Transmit Buffer full e LT Character is encountered and Transmit on Line Terminator Function is ON Client Only Locking Avoidance Mechanism When two EtherPaths are used to emulate a direct serial connectio
32. ese 45 Transmit Data TXD A PIN T 45 Transmit Data TXD B PIN 2 0 0 sese 45 Receive Data RXD A PIN 3 sse 45 Receive Data RXD B DCD Inputs esse sees eee eee 46 CABLES TTT 46 To PG 9 pin COM ports cass aces eck whe eee Bae E ea EtherPath X4 to PC crossover ethernet cable Appendix C Programming sseessseesssoesssoosssoeessocsssossssosessssssoooo 47 Iscle Te Le nemen a 47 Description and Behavior sees eee 47 Ports used by the EiherbPatbh sese 47 Server Modessa ieee Ge Se A ees 48 Appendix D AT Command Summa rry ccccscccscssrcsscssesssseeees 50 AT Command Seseo nna esate tastes 50 AT Command Respomsses eccecccesesseeseeereeseeeeeneesseeeeaes 50 AT Command Operation sees esse eee eee 50 Appendix E Open Source Software Information 0 51 IS eiee LS H 51 Obtaining the Source Code sss 51 Introduction Chapter 1 Introduction This chapter provides an overview of the EtherPath s features and capabilities C ongratulations on the purchase of your new EtherPath X4 serial server The EtherPath is a versatile product that enables serial communications devices to operate via Ethernet It is designed to easily connect up to four serial port devices to your network A remote PC or other serial device can then be used to monitor configure manage and send or receive data to the serial port devices through the LAN WAN The EtherPath can receive data from any async
33. gi bin menuform cgi select none amp form form_activate_config K S Le Go 2 Search O status 32313 72 Home Weather G Google a prices Protocols Jej Je DRUDGE Bid Favs MTF dictionary L MC Groups CNET LO Misc Personal Disable 2 Cookies 573 CSS Formsy 7 Imagesy 77 Informationy Miscellaneousy 12 Outliner 3 Resizer F Toolse T view Source Optionsy o Activate Changes Changes Activated The current configuration has not been stored to nonvolatile memory Ss Done Adblock Activate Changes Screen Activate Changes will move the current pending configuration to the active configuration See the Configuration overview for more detail Notes 32 Troubleshooting Store Configuration EtherPathx4 Mozilla Firefox 18 xj File Edit Yiew Go Bookmarks Tools Help O t gt be g S A GL ER http 205 166 54 188 cgi bin menuform cgi select none amp form Form_store_config K amp Le Go M Search LO status 32313 22 Home L Weather C Google a prices Protocols Je L Je DRUDGE Bid Favs MTF _ dictionary L MC Groups CNET O Misc Personal Disable 2 Cookies 573 CSS S Formsy 7 Imagesy Informationy Miscellaneous 12 Outliner 3 Resizer F Tools T view Source Optionsy o Store Configuration Press this button to store the current configuration to Nonvolatile Memory
34. h aac hao 4 a ise ned nie ata cinivh an thanieianeag eS 5 BottomRed LED urve fhe ARs he AR Rie he ERE SES 5 Configuration Switches Spn ae O E 6 eA eA oAh in eRe ok we he Ae tee aoe Meese Me cee 6 Switch SUAS tele ee oh naa Mec atone heh ee Scent cee 6 Switche4 cio eta inh ks She ee ae 6 LED Indicators Rear Panel LED Indicator 6 Front Panel LED Indicator sese eee 8 Front Panel Port LED Indicators 8 Package Contents sse eee eee 9 Software Requirements sese ee eee eee 9 Chapter 2 Installation ccceee PERERA LO OVerVIGW sese Quick Start Tnistallationy ists ftate hop eee elit tees ten A nT 1 Configure the EtherPath s IP address sese 10 2 Connect the Ethernet Cable ee 11 3 Verify the IP Address Configuration 12 4 Enter Your Configuration ccc eee eee eee 13 5 Minimum Con guration sss esse sees eee eee 13 Chanter 3 Help Screens and Field Edis 13 The Configuration Process scccccssssssseeeee 15 OVELVICW anada rT OTRE OTER ogaao 15 Using the Configuration Flexibility eee eee eee 15 Configuration Process Examples sese esse ee eee 16 Make configuration changes test them with Activate then save them with Save oo eee 16 Make configuration changes save them reset to activate the changes sese eee eee 16 Transfer a saved configuration to the EtherPath save it reset the EtherPath to activate the changes 16 Note regarding saved configurations
35. hronous serial device convert the data to a valid IP packet and transmit that data over the LAN WAN Serial devices can then be accessed from anywhere on your LAN WAN by any workstation computer running telnet dedicated software or COM port redirection software Two EtherPaths may be used in nailed up mode to build a RS 232 path through the WAN LAN Multiple EtherPaths may be connected via Ethernet by using them in Point to Multiple point AT Dial mode The EtherPath X4 provides four independent serial ports each accessible using the same IP address and different configurable port numbers Some serial port devices in common use are Bar Code Readers UPSs SCADA RTUs security alarms access control devices timeclocks POS terminals and multiplexers For easy connection to your LAN the EtherPath supports both 10BaseT and 100BaseT connections EtherPath Functions The EtherPath can be used in several modes simple Client Server or Server as illustrated below point to multiple point EtherModem Client Server and reverse telnet Client These modes are described below L Client Server Mode 7 S l RS232 Server Telnet Mode Figure 1 Modes of Operation Client Server Mode In this mode two EtherPaths are used Both are connected to serial RS 232 devices This is termed a Nailed Up connection The Client EtherPath will automatically establish a connection to the Server EtherPath upon power
36. in Menu will restore all values to their defaults If using Telnet the connection will be lost when the EtherPath reboots To reconnect you must connect to the default IP Address of 192 168 1 1 or change the EtherPath IP address to one that is appropriate for your network before rebooting with main menu option 7 Main Menu Option 7 Save and Exit Selecting 7 from the Main Menu will store the configuration details in the EtherPath and exit the configuration program If using Telnet the connection will be lost when the EtherPath reboots If you have changed the IP Address you must use the new IP Address when you reconnect Using option 7 when there were no changes made is one way to effect a cold reboot on a remote EtherPath Main Menu Option 8 SNMP Configuration Selecting 8 from the Main Menu will display the SNMP configuration screens Contact Person Supervisor Device Name GW3B004822 Physical Location Head Office SNMP Community public 1 Contact Person 2 Device Name 3 Physical Location 4 SNMP Community 0 Return to previous menu Example 3 public gt Contact Person This text field can be used to store the name of the person responsible for the Serial Port Device Device Name This can be used to store a descriptive name for the device Physical Location This can be used to store he location of the device SNMP Community The SNMP community name Default is public 27 EtherPa
37. l port device and to the LAN The EtherPath will connect to most remote telnet servers under user control by using reverse telnet or telnet client operation The EtherPath will connect to any port number under user control with either hardware pin6 dialing or AT dialing By using the AT Dial commands the connected device can direct the EtherPath to connect to multiple remote devices one at a time Other Features Multiple Ports The EtherPath X4 provides four independent serial ports They are accessible via different IP ports using the IP address of the box The ports may have different protocols and speeds as they are independent of each other Automatic Connection When used in Client Server mode the Client EtherPath will automatically establish a connection to the Server EtherPath on power up or under the control of an RS 232 control signal AT Commands The EtherPath responds to most common AT commands when in the Client mode Commands are listed in the Appendix Connection Recovery The EtherPath uses a proprietary protocol to ensure the client server session always exists on TCP IP When data hasn t been transferred through the connection for some time the EtherPath will communicate with the other device either EtherPath or PC to ensure that the connection is still open Introduction If there is no response the device will reset to the initial state and attempt to reconnect Also if the RS
38. lnet direct connection or web browser configuration selectively enable or disable remote configuration via Telnet via web browser and SNMP 37 EtherPath X4 User s Guide Configure Level 1 and Level 2 security as needed Using the telnet or direct connection configuration enter a user name and password pair If there is a user name then a password prompt will be issued upon establishing a telnet configuration session Otherwise the user name and password accept blank entries when accessing the screens The serial interface is not subjected to user login since it requires physical access to the unit 38 Troubleshooting Chapter 8 Troubleshooting This chapter outlines some problems that may occur during installation operation and some possible solutions to them If you follow the suggested troubleshooting steps and the EtherPath still does not function properly please contact your dealer for further advice Hardware Problems Before anything else check that all cables used are wired correctly and properly connected If connecting to a 9 pin PC port a crossover null modem cable is required P1 All the EtherPath s LEDs are off S1 Check the power supply or power connection P2 When using 10Base T cabling the EtherPath unit does not work S2 Check the Hub s link LED for the port to which theEtherPath is connected If it is off make sure the network cable between the EtherPath and hub is in good conditi
39. m the Main Menu and examine the data shown See Chapter 3 for an explanation of each of the data items 42 Troubleshooting Appendix A Specifications EtherPath X4 Specifications e Flash Memory 4 Mbytes e SRAM 8 Mbytes e LAN Interface 10 100BaseTx Autosense e RS 232 Four RJ 48 RJ 4 5 connectors pinned out as RS 561 e RS 232 speed Up to 230 4 2 Kbps e CPU Motorola Coldfire 5272 CPU 66 Mhz e OS uClinux e Power 9 VDC 600mA or Optional power supplies e Switch Configuration Reset e LED 8 Status Serial Activity LAN Activity Power e Default IP address 192 168 1 1 e Browser Management port 8000 e Operational Temperature 40C to 85C subject to power supply limitations 43 EtherPath X4 User s Guide Appendix B Port Pin out and Cables This section describes the serial port pin outs and cables RS 232 PIN Assignments The RJ 45 connectors with RS 232 port wiring contain the signals of a standard PC 9 pin DE 9P COM port on a space saving RJ 45 connector The RJ 45 connector is wired similar to the RS 561 standard It normally operates as a DCE device however some signals appear as DTE connections The chart below details signal directions and names Asynchronous RJ 45 Serial Port Pin SignalName Type 1 Data SetReady osr owt _ 2 Data Terminal Ready OTR Out 3 ses SRF f a T Receive Data ont Transm bata cr m Request io Sona RTS Out NOTE Ports and
40. mode it will send Keep Alive messages to the server at the specified frequency when the link between the client and server is idle When the Unit is in Server mode it will close the connection if the link is idle for more than 3 5 times the Keep Alive Frequency The Telnet modes work differently the Server end sends Telnet NOPs and the Client end times out O OFF 1 32767 seconds sese 25 Main Menu Option 5 Display Settin ess 3 7 9 6 nei pes tess rst CARR 26 Main Menu Option 6 Reset Configuration to Default 27 Main Menu Option 7 Save ang Exits zuena aea esia ETNE REEERE IREAS 27 Main Menu Option 8 SNMP Configuration Contact e TH Device Names nse ieee a A ea Physical Locations cics csiesasescn cian aes ran a 27 SNMP E STT aossen i a 27 Main Menu Option 9 Exit without SaVih seeveaccezs 28 Chapter 5 Web Based Configuration ccccsssssssesreeesseeee 29 OU e W a a eee CA di a ST ee ES 29 Administrative Maintenance cccccscccsccceseeesecesseeeseeesees 30 I ES 30 AN CHONS a e SO aaa vice PA ae Se 30 iii TOO Sisccteaeatesieh Race nt betes eel eas 31 Activate Changes 32 NOtes set a ate shoe wigs Eee ies choad abet tents i ela gach Pade 32 Store Configuration ccccccscccesseseeeseeeeeeseeeeeesneeesnseesenees 33 NOES secretes cba teins eet tl ctor ee pane e see eae Mi eles 33 Chapter 6 OPCLatiONs cei ccrircecsisccnvessscrassssessscossaesesseosernessescssses 34 OVELVICW so
41. must handle the keep alive packet properly 49 EtherPath X4 User s Guide Application Notes There are a number of application notes available from the DCB web site at http www dcbnet com These cover port redirection selecting the proper product EtherPath vs EtherPoll SNMP middleware for the EtherPath a demonstration client server software system and other issues A complete copy of the SNMP MIB is available from the same site along with a free port redirector program along with source code for various UNIX workstations A trial port redirector program for Windows is also available These and more are available in the Education section of that web site 50 Troubleshooting Appendix D AT Command Summary This Appendix explains the EtherPath s AT command set operation and responses The EtherPath recognizes the following AT commands when AT Dialing is enabled ATD lt IP gt connect to lt IP_address gt ATDT lt IP gt connect to lt IP_address gt ATH 0 1 on off hook ATH lt cr gt ATHO ATO 0 1 return to data mode from command mode if connected ATE 0 1 echo off on ATE lt cr gt ATEO ATSO 0 1 _ switch to Client O or Server 1 mode if not connected ATV 0 1 terse verbose response ATV lt cr gt ATVO ATZ reset EtherPath DOES NOT restore factory defaults AT amp W save current settings including ATE and ATV AT amp Z reset EtherPath Same as ATZ escape to command mode when con
42. n over the network as described previously the Server Mode EtherPath could be locked if its connecting Client Mode EtherPath disconnects abnormally If this situation happens no connection to the Server Mode EtherPath is possible and it should be reset To solve this problem the following system is used When in Telnet Server mode a telnet NOP command is used as a heatbeat keep alive signal A fixed keep alive time of 60 seconds is used When in Raw Server mode 7 A Keep Alive message is defined as a 21 byte string sErlaLsErVeRkEePaLiVe 8 This string sErlaLsErVeRkEePaLiVe is sent out by the Client Mode EtherPath if the time since the previous transmission exceeds the configured keep alive time It tells the Server Mode EtherPath that I am still alive and do not close the connection It keeps sending out this string every keep alive time seconds if there is no data to send 9 The Server Mode EtherPath will disconnect the link if it does not receive any packet from the Client Mode EtherPath within a period of three times the keep alive time 10 The Server Mode EtherPath will then initialize and accept a new connection The Client Mode EtherPath will attempt to reconnect as soon as a network path becomes available 11 User written programs can avoid this operation by setting the keep alive time to zero If a user written program uses the EtherPath keep alive the program
43. nected AT Command Responses The serial port responses depend on the ATE setting Verbose Terse OK 0 CONNECT 1 CARRIER 3 ERROR 4 BUSY 7 AT Command Operation When ATE1 is in effect there are some addition error messages such as Invalid IP address and Invalid Entry The ATE and ATV settings are saved in non volatile memory when the AT amp W command is entered and those settings are restored when the EtherPath is reset The Factory Default setting main menu option 6 for both is ON Connections are only allowed when DCD Input is HIGH or FORCED HIGH If not FORCED HIGH the DCD Input can be used to drop a connection One can also use then ATH lt cr gt to drop a connection 51 EtherPath X4 User s Guide Appendix E Open Source Software Information The EtherPath X4 was designed in conjunction with Open Source Linux software Introduction This unit was designed and programmed with Open Source Linux software in mind The core Linux operating system is uClinux available from http www uclinux org DCB supports the Open Source software effort and is appreciative of the contribution many open source developers have made to the community Other open source software used in this product may be obtained from the original developers and is made available in accordance with GNU licensing terms Obtaining the Source Code For more information on obtaining the source modules for open source code used in this pr
44. oduct send a written request to the following address Code is provided on CDROM According to GNU licensing terms a duplication fee may be charged As allowed in the GNU licensing terms proprietary non kernel modules are not included in the open source distribution Open Source Software Administrator Data Comm for Business Inc 2949 CR 1000 E Dewey IL 61840
45. on You may only use one of the LAN connections at a time Make sure the Hub supports 10BaseT or 100BaseT Sometimes it helps to move the network cable to a different hub port or power cycle the hub especially when using smart hubs or Ethernet switches 39 EtherPath X4 User s Guide Can t Connect via the LAN P1 Can t connect to the EtherPath using Telnet or Web Browser S1 Check the following e Sart troubleshooting from a known state Power the EtherPath and other equipment OFF and ON to reboot e Ping the EtherPath to see if it responds From the Windows command prompt or Run dialog box use the command ping IP Address Where IP_Address is the IP Address of the EtherPath e g ping 192 168 1 1 If it does not respond then check all LAN connections If the workstation can not ping the EtherPath nothing else will work fix this first If the LAN connection are OK the problem is in the LAN addresses or routing You should be able to ping both EtherPaths in a Client Server pair e If using a LAN without routers you can connect to the EtherPath ONLY IF your PC and the EtherPath are using IP Addresses from the same address block The EtherPaths default IP Address 192 168 1 1 requires that your PC is using an address from the address block 192 168 1 2 to 192 168 1 254 and a Network Mask of 255 255 255 0 If a router is between the devices a gateway address must be configured in both devices Check your PC s
46. r Client s Remote IP Address Server Ethernet Port 3000 1 Baud Rate 0 300 1 1200 2 2400 3 4800 4 9600 5 19200 6 38400 7 57600 8 115200 9 230400 2 Flow Control O none 1 xon xoff 2 cts rts 3 rts toggle 3 Parity O odd 1l even 2 none 4 Data Bits 0 7 1 8 5 Stop Bits 0 1 1 2 6 Client Dial Mode O AT Dial l nailed up 2 DCD input 7 Mode O server 1l client 2 telnet server 3 telnet client Client s Remote IP Address Server Ethernet Port 0 Return to previous menu LO This screen allows you to change the settings for the RS232 ports The settings used should match the device connected to the serial ports of the EtherPath Note that the EtherPath s serial port settings must match the device that is plugged into THAT EtherPath The device at the other end of the Ethernet link may be set differently The first field Port number 1 4 determines which port you are configuring 21 EtherPath X4 User s Guide Flow Control The choices are None XON XOFF and RTS CTS It is common to use NONE for installation troubleshooting then set it correctly to match the connected device If RTS CTS is used the cables must have handshake lines wired correctly RTS Toggle is a handshake mode commonly used with half duplex modems The RTS output is asserted when the unit has data to transmit and it will remain asserted for approximately Sms after the last character has been transmitted
47. rPath close the TCP IP connnection to the Client Mode EtherPath or other client program The Server Mode EtherPath will disconnect the link if it does not receive any packets from the Client Mode EtherPath or other client program within a 3 minute configurable period when using keepalives or if hardware DCD Input is lowered See Appendix B for more details The Keep Alive frequency configuration value affects this operation The connection works but is too slow If in Transmit timer mode lower the transmit timer to send packets more frequently 20 to 30 msec is a good range for many users If in dle timeout mode perhaps the serial data rate may be increased so characters arrive at the EtherPath faster 41 EtherPath X4 User s Guide Checking Device Operation Once the EtherPath is installed on your Network you can connect to it using Telnet to verify its operation The procedure is as follows 4 5 Leave the EtherPath in its normal operating mode Use telnet to connect to the EtherPath with the command telnet IP Address 8000 Where IP_ Address is the IP Address assigned to the EtherPath and 8000 represents the Port number e The port number is 8000 for configuration but 3000 is the default for normal operation e If the Manager IP Addresses have been entered in the EtherPath then only a PC having one of those addresses can change the configuration Choose item 5 Display Settings fro
48. ransmission before the block fills If the buffer contains BLOCKSIZE characters an IP packet is transmitted regardless of the timer mode and settings This is normally left at 1500 so other factors control the packet transmissions 3 Flow Control OFF Buffer Level If the amount of data stored in the buffer reaches this point and the EtherPath is unable to transmit the data then no further input will be accepted Under normal operation this will not happen This is normally left at the default value 4 Flow Control ON Buffer Level Once the High Water mark has been reached the no input accepted mode will continue until the EtherPath has transmitted enough data to reduce the buffer contents to this point This is normally left at the default value 5 Line_Terminator_Character This setting is used to change the Line Terminator Character The Line Terminator Character causes any data in the buffer to be transmitted immediately the character is received provided This is the binary value of the trigger charaacter e The EtherPath is being used in Client mode e The following setting Transmit on LT Char is ON 6 Transmit_on_LT_Char When this setting is ON any data in the buffer will be sent immediately upon receipt of a Line_Terminator_Character see previous setting When the setting is OFF the Line_Terminator Character has no effect In Server mode this setting has no effect 7 Server End of Line Filter
49. router If you forget the administrator name or password the router can only be configured by returning it to factory defaults as described in the quick start chapter Actions Change Admin Password Use this action to change the administrator s name and password The fields may be a string of 0 to 15 printable characters Do not use space or control characters If you leave this field blank you will need to enter a blank username and password during authentication 30 Troubleshooting Save or Load Config File This screen allows you to save a configuration file to the workstation or load a configuration file from the workstation to the EtherPath The files are plain text files with the cfg file extension See the configuration overview chapter for more information on modifying saved configuration files Notes e The configuration file is a specially formatted text file It may be edited with any text editor e You may save multiple configuration files on the PC by using different names for them e After transferring a configuration file to the EtherPath you may either activate the changes with the activate screen or store the changes with the store configuration screen If you activate the changes the unit will immediately begin using the new configuration If the changes are stored the unit will use the new configuration only after a reboot or reset e Be sure that you can access the EtherPath using its new configuration if
50. rs digital video cameras video conferencing systems etc e Many different serial industrial devices Chapter 2 Installation This Chapter details the LAN installation process for the EtherPath X4 Overview For Telnet Mode or Web Browser Mode configuration LAN installation is performed before configuration There must also be a valid IP address in the unit prior to configuration with these methods The default IP address may not work with your network If you use Terminal Mode configuration then the configuration may be performed prior to LAN installation See Chapter 3 for details Quick Start Quick start instructions are on the next page Installation is an easy process but you are must have a thorough understanding of IP networking subnetting and routing You should have a network diagram illustrating IP addresses subnetting and all IP routing that you intend to use prior to installing the router Installation Configure the EtherPath s IP address _ This requires several steps If the unit s default address 192 168 1 1 is appropriate for your network skip this step 1 Place configuration switch 2 in the UP position with all other switches DOWN D Attach a terminal device to serial port 3 The terminal should be configured for 9600 bps 8 data bits 1 stop bit and no parity Parts required for this connection are provided with the unit Use the REMOTE PC adapter on one end of the provided RJ 4
51. rver Mode 1 Transmit Timer When in Timer Mode The time period for which data will be stored in the buffer before being sent Allowable values range from lms to 10 000ms 10 seconds A commonly used value is 20 msec Note Setting any port s timer to less than 20 ms may cause the performance of other serial ports to be less than optimal When in Idle Timeout Mode The time period this unit s port must be idle after receiving a character before sending a block of data via the Ethenet This is used to keep incoming blocks of data intact It is useful for some protocols such as Modbus RTU Its setting depends upon the port speed and should be several character times Allowable values range from lms to 10 000msec 10 seconds A typical value for a 9 6 Kbps port is about 3 msec M Timer Mode When set to 0 the timer is a free running clock and if there is data in the buffer an IP packet is transmitted every TIMER msec 23 EtherPath X4 User s Guide When set to 1 the timer is a serial port idle time value If there is data in the buffer and the serial port has been idle for TIMER msec then an IP packet is transmitted 2 Block Size The maximum ethernet packet buffer size The minimum value is byte the maximum 4096 bytes 4 K Typical values are either in a low range of 10 20 characters for polling applications or very large in the range of 500 to 1500 for file transfer applications Normally the timer triggers a packet t
52. s Examples Make configuration changes test them with Activate then save them with Save This is the most commonly used method for changing the configuration It allows you to test the configuration prior to saving it If during the testing you notice an abnormality you can reset the unit to return to the last good configuration Make configuration changes save them reset to activate the changes This method allows one to configure the EtherPath for later use Make the changes to the pending configuration and save them Your current session will not be affected but when the unit is reset or next powered up it will begin using the new configuration This method is useful when you are configuring a unit to use a new LAN address range while it is on the old LAN Transfer a saved configuration to the EtherPath save it reset the EtherPath to activate the changes It is useful to transfer an existing configuration to a PC text file for future use Then if the hardware must be replaced simply transfer that stored configuration to the new EtherPath If the PC is in the default IP address range of the new EtherPath 192 168 1 x subnet then a new out of the box EtherPath is easily configured using this method Start the EtherPath transfer a stored configuration file and store it When it is next restarted it will have the proper configuration Note regarding saved configurations The saved configuration file is a simply formatted r
53. s eis hisk sedi arteries E ar NEE ES 34 Client Server Point to Point Nailed Up Mode 34 Server Mod exci tick we ess ace esl dees TTEN 35 Client Server Point to Multiple Point EtherModem Mode35 Client Reverse Telnet Mode sese 36 Method 1 ATD dial mode sss 36 Method 2 Hardware Dial models sss 36 Chapter 7 Configuration Security cccccccsscsscsscssecsscsees 37 OVEIVICW ie 2 ite ase BO A ee 37 Bevel Wievawy tee A AE 37 Level ii ed Seis ee a Rect Sai ee es 37 Level 2 ii E 37 Level T 38 Chapter 8 Troubleshooting scccscssccsccseccscssecsccsersscsssooes 39 Hardware Problems zacnes mcris inen 39 Can t Connect via the LAN 40 Other Problems ae ra Yasa ZRA e 41 Checking Device Operation sese 42 Appendix A Specifications ccccscccccsscscscsscseesscsssssccccssscsooes 43 EtherPath X4 Specifications cccsceesecesseeeseeeeeteeeeees 43 Appendix B Port Pinout and Cablles cscccscsssssseeeessssseees 44 RS 232 PIN Assignments see 44 Control Signal Operation sss sees eee 44 DIR oee e T E mess cheated ria nia Bei eet 44 Receive Dataies sc HSR 252A A30 Bia oie EG Bs 44 Transmit Data coiscsssvcsscsstcsceevtccscasstcenteccncusde ieina 44 DED iriiri aia e abstu sin HT 44 Signal Ground esei r EE REN RAR 44 IS A 45 RD Se esecaed sack aseeeatoes te teeasce tee tio E T cence sen tee Va AT 45 RS 422 PIN Assignments RJ 45 Connectors sese eee 45 RS 422 Port Operation s
54. s the address e g 192 168 1 4 of the client serial device server In client mode it is the address e g 192 168 1 5 of the remote server Server Ethernet Port In client mode this is the number of the remote server port to connect to In server mode this establishes the server socket port that accepts connections for this serial port 22 Troubleshooting Main Menu Option 4 Advanced Configuration Screen Selecting 4 from the Main Menu will display the following Enter port 1 4 1 Transmit Timer ms 20 Timer Mode transmit timer Block Size 512 Line terminator Character Decimal 0 255 13 Transmit On LT Char off Server End Of Line Filter off Client Local Character Echo off Keep Alive Frequency 1 32767 Seconds 120 1 Transmit Timer ms 2 Timer Mode O transmit timer 1 idle timeout 3 Block Size 4 Line terminator Character Decimal 0 255 5 Transmit On LT Char O off 1 on 6 Server End Of Line Filter O off 1l on 7 Client Local Character Echo O off l on 8 Keep Alive Frequency 1 32767 Seconds 0 Return to previous menu Example 1 2 gt The EtherPath has a built in buffer to store data Most of these settings affect the operation of the buffer and how data is buffered and transmitted over the Ethernet The default values should normally be satisfactory but they may be tuned for optimum operation Note Options 5 6 and 7 apply to Client Mode only and have no effect in Se
55. th X4 User s Guide Main Menu Option 9 Exit without Saving Selecting 0 from the Main Menu will exit the configuration program without saving any data you have entered 28 Troubleshooting Chapter 5 Web Based Configuration This Chapter describesweb based configuration screens and some configuration hints for the EtherPath X4 Overview The EtherPath X4 is most easily configured using forms displayed on a web browser In this chapter we illustrate all entry forms and describe their use All configuration screens are accessed from the main index screen shown below They are divided into sections with only one layer of screens below the top level EtherPathx4 Mozilla Firefox 1615 Ele Edt View Go Bookmarks Tools Help o gt SO A G BB http 1 205 166 54 188 gi bin menuform cgi S Oa M Search LO Status 34 T3 22 Home L Weather C Google e prices Protocols Je J Je DRUDGE Bid Favs MTF dictionary LC MC Groups CNET LO Misc Personal Disable 2 Cookies 5 csse Forms Z Images Information Miscellaneous 17 Outline 3 Resizer F Todle T view Source 7 Optionsy o EtherPathX4 Setup Client Server Mode SIRSE From this index click on a menu keyword to open the appropriate screen In this manual screens are discussed in the order shown on the index screen 29 EtherPath X4 User s Guide Administrative Maintenance
56. the telnet client when the connection is established Some telnet clients don t display this message You may now proceed as if the remote serial port device was connected to the serial port of your PC or workstation If there is a firewall in the link between the EtherPath and your workstation you may need to configure it to pass packets using the port number configured into the EtherPath Client Server Point to Multiple Point EtherModem Mode EtherModem mode requires multiple EtherPaths configured in Server mode and a single EtherPath configured in Client mode Under user control with AT commands the Client connects to multiple Servers one at a time similar to the way a dial up modem would Server and Client refer to the operational mode settings of the EtherPath All EtherPaths must be connected as described in Chapters 3 and 4 One serial port device is connected to each Server EtherPath and additional serial devices usually a workstation are connected to the Client EtherPaths The Client EtherPath must be configured for ATD dialing This is the unit that will place the calls to the other EtherPaths At the Client end start the Terminal emulation program or use a real terminal The communication settings for this device must be the same as the values entered into the Client EtherPath device earlier Power up the local EtherPath It will be in command mode awai
57. ting a connection command Type the command AT lt enter gt to test the RS 232 connection It should answer with an OK message If not check the serial port rate and wiring connections Dial a remote EtherPath by using an ATD dial command ATD1 2 3 4 5555 where 1 2 3 4 is the IP address of the remote EtherPath and 5555 is the optional connection port number configured in the remote EtherPath The EtherPath will automatically connect to the remote EtherPath If an address isn t given the IP address stored during configuration is used If a port isn t given the port number stored during configuration is used Upon establishing a connection a Connect message is displayed If unable to establish a connection a Busy message is displayed You may now proceed as if the remote serial port device was connected to the serial port of your workstation Disconnect from that remote EtherPath with either the command followed by ATH or by lowering the hardware lead on pin six See the Appendix for a complete list of AT commands and responses 35 EtherPath X4 User s Guide Client Reverse Telnet Mode Method 1 ATD dial mode The EtherPath must be configured for ATD dialing and set for client Start the Terminal emulation program or use a real terminal The communication settings for this device must be the same as the values entered into the Client EtherPath device
58. ts used for data The default is port 80 8 Telnet Setup Enable This option controls whether the Etherpath s telnet setup server waits for a user to setup the Etherpath X4 via telnet or not If you select disable and activate changes you will no longer be able to configure via the telnet interface You can always congigure via the serial port Serial3 7 Telnet Setup Port This option controls the telnet setup port which is normally port 8000 20 Main Menu Option 2 Set Admin Username and Password Selecting 2 from the Main Menu will result in the following screen Username admin Password 1 Username 2 Password 0 Return to previous menu Troubleshooting If the entries are blank then any user on the LAN can configure the EtherPath If you are not sure about using this feature leave the addresses all zeros The Username field may be a string of 0 to 15 printable characters Do not use space or control characters If you leave this field blank you will need to enter a blank username during authentication The password may be a string of 0 to 15 characters If you leave this field blank you will need to enter a blank password during authentication Main Menu Option 3 Set Serial Port Data Selecting 3 from the Main Menu will result in the following screen Enter port 1 4 1 Baud Rate 9600 Flow Control none Parity none Data Bits 8 Stop Bits 1 Client Dial Mode nailed up Mode serve
59. uration management process on the EtherPath X4 using a Web Browser Overview The EtherPath contains a quite flexible configuration management system By using this system correctly one can remotely configure the unit save copies of that configuration to a PC change configuration changes for later activation and remote transfer firmware upgrades to the unit There may be up to three configuration images in use at any time 1 The active configuration Normally this is the configuration that was loaded from memory when the EtherPath was last booted However it may have been changed since boot time as described below This is the configuration that is currently running the unit 2 The pending configuration This is the current configuration that was loaded form memory when the EtherPath was last booted WITH any changes made by using the configuration screens This configuration is NOT the configuration running the EtherPath at present 3 The stored configuration This is the configuration that was last written to the EtherPath s non volatile RAM The next time the EtherPath boots it will start running this configuration Note that any configuration transfer with the Administration Configuration Transfer screen is the working configuration You can load a configuration file from the PC then either activate it to test it Or save it without activation if you don t want to change the currently running Using the Configuration
60. word Pressing any key will then take you to the Main Menu which also displays the version number lcome to the EtherPathX4 version vl 0 Setup Program Set LAN properties Set name password Set Serial port parameters Set Advanced port parameters Display Configuration Reset Configuration to Defaults Save and Exit SNMP configuration Exit without saving lect a function by number gt Each of these menu options is explained in the following pages Entering Data Enter the number of the field you wish to change followed on the same line by a space and the data for that field For example On screen one to set the IP address field 1 to 192 168 1 10 gt 1 192 168 1 10 Menu Options Main Menu Option 1 Setting LAN properties Selecting 1 1 Set Local amp Remote IP Address Subnet Mask Gateway Address from the Main Menu will result in a screen which looks like the following IP Address 205 166 54 188 Subnet Mask 255 255 2550 Gateway IP Address TCP Tx Timeout normal SNMP enable disable Web Setup Enable enable Web Server Port 80 Telnet Setup Enable enable Telnet Setup Port 8000 P Address Subnet Mask Gateway IP Address TCP Tx Timeout O normal 1 slow SNMP enable O disable 1 enable Web Setup Enable O disable 1l enable Web Server Port Telnet Setup Enable 0 disable 1l enable Telnet Setup Port Return to previous menu COMDANHDOPWNEF Example 4 1 gt

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