Series 90-70, Factory LAN TCP/IP Ethernet Interface (Type 2
Contents
1. If there isno vme soft key in the I O Configuration screen configure the rack and slot where the Ethernet Interface Type 2 is installed as a Blank jumper as follows Press the m70_io soft key F1 From the next screen press the other soft key F7 then move the cursor to the BLANK SLOT INTERRUPT JUMPER selection and press the Enter key to select Press the Escape key to return to the I O Configuration screen The slot containing the Ethernet Interface will be displayed as JUMPER Press the Escape key to save the PLC configuration to disk Use of the dummy module type above will always result in a Configuration Mismatch error at each power up configuration store or Ethernet Interface restart To prevent this error from putting the PLC into STOP FAULT state change the severity of this error as follows From the main PLC Configurator screen press the cpu soft key F2 to display the CPU configuration then press the fltcfg key F5 to display the Fault Categories Press the down arrow key repeatedly until Fault Type is System Config Mismatch then press the Tab key to change the Fault Category from F Fatal to D Diagnostic Press the Escape key twice to store the fault categories to the PLC CPU and return to the main PLC Configurator screen Store the PLC configuration to the PLC Now configure the Ethernet Interface Type 2 locally using its onboard Station Manager Refer2. Local request to send was rejected discarded request This fault affects only DDP2 Name Resolution operation with the result that the existence of duplicate DDP2 names on the network is detected at the time that communication to one of the duplicate name stations is attempted rather than at the time of Configuration store Important Product Information IC697 Factory LAN Ethernet Interface Type 2 9 GFK 1314F December 15 1997 Changes and Additions to the User s Manual GFK 1246 SNTP Timestamping of EGD exchanges Release 2 50 and later of the IC697CMM 742 Ethernet Interface can provide SNTP supplied value in the timestamps of EGD exchanges To enable this feature Release 7 01 of MS DOS Programming Software or Version 2 10 of Windows Programming Software must be used to configure the Ethernet Interface and IC697 PLC CPU Release 7 80 or later Release 7 50 or later for Redundancy systems must be used Each consumed EGD exchange contains a timestamp that indicates the time that the associated data sample was transferred to the Ethernet Interface by the producing CPU for transmission For Ethernet Interface Release 2 00 the timestamp was set according to the PLC CPU s local clock For Ethernet Interface Release 2 50 the timestamp can optionally be set using a clock value supplied by a central user supplied Simple Network Time Protocol SNTP time server on the network By default the PLC CPU s local clock is used To enable
3. 2 GFK 1314F 10 Use the SOSW Station Manager command to verify that all configuration 11 parameters have been set to the proper values A typical SOSW command is shown below SOSW lt lt lt Soft Switch Data gt gt gt IP Address 3 0 0 1 TCP IP values from Soft Switches Subnet Mask 0 0 0 0 Gateway r 0000 Name Server 0 0 0 0 Port 1 Station Manager Port 2 S W Loader Data Rate 9600 Data Rate 19200 Parity NONE Parity ODD Stop Bits 1 Stop Bits 1 Flow Control NONE Flow Control NONE TurnA Delay NONE TurnA Delay NONE Timeout LONG Timeout LONG Source of Soft Switches Internal Backup When all configuration parameters have been correctly entered use the RESTART Station Manager command to restart the Ethernet Interface into normal operation The RESTART command is shown below restart Restarting module The Ethernet Interface is restarted into the Operational state After approximately 20 seconds another NODE output is automatically generated when the restart is complete The NODE output should indicate the IP Address configured in Step 9 above The Subnet Mask Gateway IP Address and Name Server IP Address can be displayed by the SOSW command as described in Step 10 above The Ethernet Interface is now properly configured and ready for use Please proceed to Procedure 3 in Chapter 2 of the User s Manual to verify proper operation of the Ethernet Interface with the ne
4. SNTP clock timestamping select SNTP for the Network Time Sync field in the Ethernet Interface configuration Doing so will cause the Ethernet Interface to listen for a broadcast clock value from an SNTP server The clock value will be supplied to the PLC CPU for timestamping produced EGD exchanges NOTE the PLC CPU s local clock is not affected by the SNTP supplied clock value and the Ethernet Interface module s local clock is synchronized to the SNTP supplied value SNTP timestamping is enabled on a per module basis The clock source for EGD exchanges produced through a particular Ethernet Interface is determined by the Network Time Sync field for that module Any SNTP or NTP compliant server that supports broadcast multicast operation may be used The Ethernet Interface will synchronize to a server s time after receiving two broadcast clock values within a 150 second period The Ethernet Interface will store and maintain clock information for up to three servers in addition to the currently synchronized server If a broadcast clock value is not received from the current server within 150 seconds it will be considered lost and the Ethernet Interface will synchronize with another server if one is available Also if at any time two clock values are received from a lower stratum server the Ethernet Interface will synchronize to the new server s time The SNTP station manager command may be used to view server s
5. to the TCP IP Ethernet Station Manager Manual for complete information on Station Manager operation Connect a standard ASCII terminal or PC based terminal emulator to the Station Manager RS 232 serial port on the Ethernet Interface Use the NODE Station Manager command to verify that the terminal or emulator is properly 12 December 15 1997 Important Product Information IC697 Factory LAN Ethernet Interface Type 2 GFK 1314F communicating with the Station Manager software in the Ethernet Interface A typical NODE command is shown below gt node IC697 PLC Factory LAN Ethernet Interface Type 2 Copyright c 1996 All rights reserved Version 1 10 25A1 TCP IP Version 1 00 12A1 Software Loader IP Address 0 0 0 0 MAC Address 080019010688 x PLC CPU version 5 00 supports restricted LAN Interface operation KEK SRTP server only client operation is not permitted KWK LAN Interface cannot be configured with PLC Configurator RRR Use CHSOSW Station Manager cmd to enter module configuration KRK PLC CPU version 6 00 or higher is required for full operation If the Ethernet Interface has not been previously configured the NODE output will also indicate that the Ethernet Interface is waiting for a valid IP address Use the LOGIN Station Manager command to log in in order to access the Modify level commands needed later The LOGIN command is shown below gt login After entering the LOGIN
6. 37150 G01 R07 Field Update Kit 44 A739337 G03 Data Sheet GFK 1309D User Manuals GFK 1246B TCP IP Ethernet Communications for the IC697 PLC Type 2 User s Manual GFK 1186D TCP IP Ethernet Communications for the IC697 PLC Station Manager Manual Important Product Information IC697 Factory LAN Ethernet Interface Type 2 3 GFK 1314F December 15 1997 Operational Notes Network Bandwidth Utilization Due to its performance potential the IC697CMM 742 Interface can present a heavy load on the network segment at its maximum operating capacity Both Ethernet Global Data and Channel operation can contribute to an extremely high rate of network traffic when even a few such modules are involved The potentially high network bandwidth utilization can cause a higher than nor mal rate of network collisions which may cause timeouts on data transfers By configuring transfer timing to no more than you need you can minimize such problems For Ethernet Global Data operation it is strongly recommended that caution be taken when defining exchange parameters In particular period values should be set to the required rates for your particular application instead of as fast as possible rates For Channel operation it is strongly recommended that caution be taken when using multiple connections operating in an as fast as possible mode Tests conducted at the factory showed that 32 simultaneous Channels transferring 2 Kilobytes of da
7. C697 PLC CPUs with version 6 00 and later firmware to obtain the full capabilities of the Ethernet Interface Type 2 Versions 1 10 and later of the Ethernet Interface Type 2 also provide restricted operation with IC697 PLC CPUs running firmware versions 4 12 through 5 50 These notes describe the necessary Ethernet Interface configuration and restricted operation with these PLC CPUs The Ethernet Interface Type 2 cannot be used with PLC CPU firmware versions prior to 4 12 Ethernet Interface Installation and Configuration The Ethernet Interface Type 2 is installed in the main PLC rack as described in Procedure 1 in Chapter 2 of the TCP IP Ethernet Type 2 Users Manual 1C697 PLC CPU firmware versions 4 12 though 5 50 do not accept PLC configuration data for the Ethernet Interface Type 2 Thus this Ethernet Interface cannot be configured as described in Procedure 2 in Chapter 2 of the User s Manual An alternate Procedure 2 is provided below this procedure uses a user supplied computer terminal or equivalent plus the Station Manager software within the Ethernet Interface to enter the necessary configuration data The Station Manager is completely described in the TCP IP Ethernet Station Manager Manual Please refer to this manual for complete details on connecting a terminal to the Station Manager serial port of the Ethernet Interface and on the various Station Manager commands used within this alternate Procedure 2 Important P
8. December 15 1997 GFK 1314F IMPORTANT PRODUCT INFORMATION READ THIS INFORMATION FIRST Product 1C697 Factory LAN Ethernet Interface Type 2 1C697CMM742 FE 1C697CMM742 EE Firmware Version 2 60 This is release 2 60 of the IC697 Ethernet Interface Type 2 This module provides network communications using the SRTP Service Request Transfer Protocol over standardTCP IP Transmission Control Protocol and Internet Protocol on an Ethernet LAN Local Area Network The Ethernet Interface supports communications between 1C697 PLCs and or IC693 PLCs equipped with TCP IP Ethernet Interfaces The Ethernet Interface can also communicate with MS DOS Programming Software for IC697 TCP IP Windows Programming Software and applications which use the TCP IP Host Communication Toolkit software Features and benefits for this module include m Higher performance compared to IC697CMM 741 2 to 4 times higher throughput for data transfers between PLCs with identical Channel setups Up to 32 simultaneous network connections twice the number supported by IC697CMM741 m Unlike the IC697CMM741 configuration of the Ethernet Interface is fully supported within CPU configuration Centralized IP network configuration management is also supported via standard BOOTP protocol Centralized Domain Name management is supported via standard DNS protocol m Three alternative Ethernet network ports are available on the IC697CMM742 Interface Two of the network port
9. ation IC697 Factory LAN Ethernet Interface Type 2 GFK 1314F Software Loader 1C697 PLC CPU versions 6 00 and later gracefully allow option modules like the Ethernet Interface to suspend communication with the PLC CPU while loading new firmware Since this capability is not present in PLC CPU versions 4 12 5 50 special operations are required when loading new firmware into the Ethernet Interface Follow the steps in Appendix E of the User s Manual to load new firmware into the Ethernet Interface step 2 of the firmware installation process must be expanded as described below from Appendix 2 Hold the Reset button on the Ethernet Interface until the bottom LED STATUS turns ON Upon releasing the button all 4 LEDs will blink in unison This signifies that the Interface is in the Software Loader state a new After 18 20 seconds the PLC CPU will indicate that communication with the Ethernet Interface has been lost A PLC Fault Table entry will be generated Loss of option module all LEDs on the Ethernet Interface will turn OFF and remain so indefinitely 2b new Press the Restart button again The Ethernet Interface will restart immediately without any communication to the PLC CPU The OK LED will blink turn OFE and blink again After approximately two minutes the Ethernet Interface will enter the Operational state The absence of PLC CPU communication is of no concern at this time c new Hold the Reset butto
10. c and 2250 Vdc The measured value for the IC697CMM742 EE is 1000 Vac and 1200 Vdc 6 Important Product Information IC697 Factory LAN Ethernet Interface Type 2 December 15 1997 GFK 1314F New Software Features Multiple Gateways Multiple Gateways support communications between PLCs on different subnets interconnected by gateways sometimes called routers An Ethernet Interface with the Multiple Gateways feature has the ability to route packets not only through a single default gateway but also through additional gateways located on the local subnet This feature requires Windows Programming Software Version 2 10 or later A more detailed description of Multiple Gateways is available through the Windows Programming Software Online Help SNTP Timestamping of Ethernet Global Data Exchanges This release of the IC697CMM742 Ethernet Interface can provide SNTP supplied time value in the timestamps of Ethernet Global Data exchanges A central SNTP server can be used to supply time to listening stations periodically permitting participating stations to maintain synchronized clocks thus providing consistency of Ethernet Global Data timestamps across participating stations This feature requires IC697 CPU Release 7 80 or later Release 7 50 or later for Redundancy systems as well as Windows Programming Software Version 2 10 or later A detailed description of this feature can be found in Changes and Additions to the User s Manual later in thi
11. command the Station Manager prompts for the Modify level password Password Enter your password which is not echoed The default password is system lower case If the password matches the current Modify level password a confirmation message is displayed the Station Manager prompt changes from gt to un Use the Modify level MAINT Station Manager command to restart the Ethernet Interface into the Maintenance state The MAINT command is shown below maint Restarting module into Maintenance state The Ethernet Interface is restarted into the Maintenance state After approximately 20 seconds another NODE output is automatically generated when the restart is complete The display will also indicate that the Ethernet Interface is in the Maintenance state the Station Manager prompt is Modify level login is not required in the Maintenance state Important Product Information C697 Factory LAN Ethernet Interface Type 2 13 GFK 1314F December 15 1997 9 Use the CHSOSW Station Manager commands to enter the configuration data for this Ethernet Interface The IP addressing parameters ip_address subnet_mask gateway and name_server must be set to values supplied by the person in charge of your network the network administrator TCP IP network administrators are familiar with these parameters It is important that these parameters are correct otherwise the Ethernet Interface may be unable to communicate on the n
12. ct Information IC697 Factory LAN Ethernet Interface Type 2 December 15 1997 GFK 1314F In either case the clock on the Ethernet Interface continues running based on the time base value last supplied The Ethernet Interface also continues to supply the time value to the CPU for inclusion in produced exchanges In addition it continues to monitor SNTP messages and will become synchronized when possible One additional exchange status value is possible when STNP timestamping is in use The value is described below STATUS VALUE DESCRIPTION NEW_DATA NO_ERROR_TIME_UNSYNC producer exchange N A consumer exchange Since the last I O scan new data has arrived over the network However the producer of the exchange is configured for network time synchronization but not actually synchronized to the network time Therefore the timestamp which goes along with the new data is not synchronized to the network This error condition is considered the least important if another error condition exists its error code will appear in the status value Special Notes on Using IC697CMM742 with PLC CPUs Versions 4 12 5 50 The IC697CMM742 Ethernet Interface Type 2 is designed for high performance operation and convenient installation with IC697 PLC CPU versions 6 00 and later These PLC CPUs recognize and support the Ethernet Interface Type 2 and provide the high throughput demanded by this product GE Fanuc recommends use of I
13. etwork and or network operation may be corrupted It is especially important that each node on the network is assigned a unique IP address Enter the IP Address as follows chsosw ip_address lt a b c d gt where lt a b c d gt isthe unique dotted decimal IP address for this node Enter the Subnet Mask as follows chsosw subnet_mask lt a b c d gt where lt a b c d gt is the dotted decimal subnet mask for this network segment Enter the Gateway IP Address as follows chsosw gateway lt a b c d gt where lt a b c d gt is the unique dotted decimal IP address of the gateway device Enter the Name Server IP Address as follows chsosw name_server lt a b c d gt where lt a b c d gt is the unique dotted decimal IP address of the name server device The CHSOSW command may also be used to change the parameters for either serial port on the Ethernet Interface in cases where the default serial port configuration values are not used Refer to the TCP IP Ethernet Station Manager Manual for further information A typical CHSOSW command is shown below chsosw ip_address 3 0 0 1 Once entered the configuration parameters are retained in non volatile flash memory for use each time the Ethernet Interface is powered up or restarted Configuration needs to be re entered only when changing one or more configuration parameters 14 December 15 1997 Important Product Information IC697 Factory LAN Ethernet Interface Type
14. even when a new configuration that contained no Name Resolution information was stored Now that authoritative Name Resolution information is always obtained from the PLC CPU the CHMYNAME and CHNAMETBL Station Manager commands have been disabled This means that Name Resolution information must always be entered at the PLC Programmer and stored into the PLC PLC fault table entries for Ethernet Global Data fault conditions have been made more descriptive The entries are described in Table B 2 within Appendix B of GFK 1186D The Station Manager commands STAT G and XCHANGEshould use the dotted decimal form to display the EGD Producer ID similar to its usage in the Windows Programming Software If the network name server cannot be accessed when EGD production is begun any ex change which relies on name resolution is not activated even if the name serverbecomes availablelater In this release the name resolution continues to be retried and the ex change production will begin when the name is resolved successfully 8 December 15 1997 Important Product Information IC697 Factory LAN Ethernet Interface Type 2 GFK 1314F Restrictions and Significant Open Problems Open Problems in Release 2 60 Firmware ID Code CR54556 CR63808 CR64052 CR64699 Description The IC697CMM742 Interface can not communicate with the local PLC CPU when a PLC load or a store operation is in progress A PLC load or store operation via MS DOS P
15. he system design requires data rates beyond the capacity of the server PLC CPU please consider upgrading to a more powerful CPU model Startup 1 Upon each powerup or restart of the Ethernet Interface or configuration store to the PLC the following entry will be generated in the PLC Fault Table for the slot containing the Ethernet Interface Reset of addition of or extra option module When operating with PLC CPU versions prior to 6 00 the Ethernet Interface does not generate the exceptions or PLC Faults that normally occur when Ethernet Interface does not receive module configuration from the PLC CPU Each powerup and restart of the Ethernet Interface takes approximately 20 seconds This is roughly 10 seconds longer than required when the Ethernet Interface is used with PLC CPU versions 6 00 and later Station Manager 1 The STAT C command PLC Driver status does not display the current PLC CPU state RUN STOP andI OENABLED I ODISABLED In the TALLY C command output PLC Driver tallies the PlcSweep tally does not count the number of PLC sweeps This tally should be ignored The STAT H command Channel API status always indicates Channel API task not initialized As detailed above in the Ethernet Interface Installation and Configuration section special restricted operation notification is displayed with the startup message and by the NODE command 16 December 15 1997 Important Product Inform
16. host accesses read period or writeperiod to a larger value so the CPU has enough time to process all service requests Also issuing a large number of COMMREQs to one Interface in one sweep may result in temporary resource exhaustion within the CPU the Ethernet Interface or both If this occurs the PLC logs a fault in the PLC fault table with fault group of Option Module Software Failure and error code equal 2 indicating that the COMMREQ frequency is too high When this occurs the FT output of the COMMREQ function block will also be set It is recommended to use logic that staggers the execution of COMMREQs across multiple sweeps so that a limited number of COMMREQs typically 8 or less are sent to a given board in each sweep In addition the FT output parameter should be checked for errors If the FT output is set meaning an error has been detected the CommReq can be re issued by the application logic 4 December 15 1997 Important Product Information IC697 Factory LAN Ethernet Interface Type 2 GFK 1314F Use of Windows Programming Software Store Function When performing a Store to PLC operation from Windows Programming Software Version 2 0 to a PLC system that contains an IC697CMM742 Interface we make the following important operational recommendation regarding the Hardware Config components that appear within the Folder tab Every Hardware Config component that appears in the Store dialog mu
17. lease 7 20 or higher Name Resolution Release 7 00 or higher SNTP timestamping of EGD Release 7 80 or higher Release 7 50 or higher for Redundancy systems 1C697 Ethernet Interface IC697CMM 741 loaded with TCP IP software IC651ENS042 1C693 Ethernet Interface IC693CMM321 MS DOS Programming Software version 6 02 or higher required to configure the Ethernet Interface For some features Windows Programming Software is required see below Windows Programming Software Version 1 00 or higher For some features higher versions are required Ethernet Global Data Version 2 00 or higher SNTP timestamping of EGD Version 2 10 or higher Name Resolution Version 2 00 or higher Multiple Gateways Version 2 10 or higher Host Communications Toolkit HCT software products listed below Toolkit for Windows NT 95 C C Applications IC641SWP058 Toolkit for Windows 3 xx C C Applications IC641SWP052 Toolkit for HP UX C Applications IC641SWP054 Toolkit for DEC VAX VMSC Applications IC641SWP053 Toolkit for DEC Alpha AXP VMSC C Applications IC641SWP057 Host Communication Drivers for Windows NT 95 IC641SWP080 IC641SWP081 Host Communication Drivers for Windows IC641SWP050 IC641SWP051 Some versions of HCT do not support the Send Information Report COMMREQ or Ethernet Global Data Please refer to the appropriate HCT IPI document for more information Hardware Identification EX7A1 44A7
18. n on the Ethernet Interface until the bottom LED STATUS turns ON This time upon releasing the button the OK LED will blink for approximately 30 seconds then all 4 LEDs will blink in unison to signify the Ethernet Interface is in the Software Loader state The Ethernet Interface can now safely accept the firmware update Proceed with Steps 3 through 9 in Appendix E of the User s Manual When the loading process is complete the Ethernet Interface will automatically restart Proceed to new Step 10 to restore communication between the PLC CPU and the Ethernet Interface 10 new Once the Ethernet Interface begins to restart upon load completion OK LED is blinking other LEDs are OFF turn the PLC power supply OFF and then ON this is necessary to establish communication between the PLC CPU and the Ethernet Interface
19. quires that the PLC include a power supply which supplies 12Vdc IC697PWR711 724 or 748 note if an externally powered transceiver is used on the AUI network port 12Vdc is not required but an erroneous blown fuse fault will appear in the CPU fault table Special Notes on Release 6 CPUs When your ladder program accesses P and L memories through COMMREQs and a Release 6 00 CPU is used on the server PLC the COMMREQ Status Word CRS Word may occasionally return F405 If this occurs temporary relief may be obtained by cycling power on the server PLC Permanent relief requires a CPU firmware upgrade to 6 02 or greater Some PLC Fault Table Entries are Imprecise In the PLC Fault Table display of the IC641 Programming software the following messages may not provide a meaningful description of the problem for the Ethernet Interface m LANPROM softwaremismatch running soft Sw util m LAN system software fault resuming m LAN Severe Network Problem Attempting Recovery m Module software corrupted requesting reload Should you see these messages select the message and enter F10 ZOOM or CTRL F to display the error codes associated with the message Then refer to GFK 1186D Appendix B Exception Log Event Description for an accurate explanation of the error codes For IC697CMM742 EE only 802 3 Specifications The IEEE 802 3 specification for isolation voltage of the 10BaseT network port is 1500 Va
20. ro grammer WSI Serial and orEthernet or Windows Programmer either serial or Ethernet has priority over all other communications During a PLC load or store opera tion it is possible for channels or server connections to experience time out errors which may lead to disconnections Possible exception log entries include log event 8 entry 2 8 38 or 40 Whenever these backplaneerrors are logged there are likely to also be additional exception logs for terminated TCP connections and SRTP Server and Channel API errors Application programs should always be written to detect and recover from time out conditions Under very heavy Channel load conditions LAN system software faults are intermittently reported The reported exception log entry is log event 8 entry 2 39 entry 3 fff This has been observed in an application with 32 Write Channels of 1024 bytes each updating and retasking as quickly as possible Channel operation continues without errors While a local Station Manager TRACE LZ troubleshooting command is in effect at an Ethernet Interface do not issue Station Manager REM lt node gt TEST commands to it from a remote Interface Doing so can cause errantbehavior including module lockup and loss of module in the PLC fault table Storing Hardware Configuration that contains new or changed values for the Ethernet Interface s configuration results in exceptionevent 11 5and corresponding PLC Fault Table entry
21. roduct Information IC697 Factory LAN Ethernet Interface Type 2 11 GFK 1314F December 15 1997 Alternate Procedure 2 Configuring the Ethernet Interface with PLC CPU versions 4 12 through 5 50 1C697 PLC CPU firmware versions prior to version 6 00 do not accept configuration data for the Ethernet Interface Type 2 Thus the Ethernet Interface Type 2 cannot be configured by the IC641 PLC Configuration software Instead a dummy module must be configured in place of the Ethernet Interface the Station Manager software within the Ethernet Interface is then used to enter configuration data directly at the module First create a dummy entry in the PLC Configuration for the rack and slot where the Ethernet Interface is installed 1 Connect a PC running the IC641 PLC Configuration software to the PLC via the built in serial port on the PLC CPU module Then access the I O Configuration screen of the IC641 PLC Configuration software 2Move the cursor to the rack and slot where the Ethernet Interface Type 2 is installed This slot must be configured as a 3rd Party VME module as follows From the I O Configuration screen press the vme soft key F7 From the next screen press the vme soft key F1 then move the cursor to the 3RD PARTY VME MODULE selection and press the Enter key to select Press the Escape key to return to the I O Configuration screen The slot containing the Ethernet Interface will be displayed as 3PY VME
22. s the 10BaseT twisted pair and the 10Base2 thin wire require no external transceiver In addition a standard AUI port is available for use with an external user supplied transceiver Only one of the three network ports may be used at a time Support for Ethernet Global Data a means by which one device referred to as a producer can share a portion of its internal memory with one or more other EGD capable devices referred to as consumers at a regularly scheduled periodic rate An in depth description of this feature is available through Windows Programming Software Online Help Version 2 00 or later This feature requires IC697 CPU Release 7 20 or later as well as Windows Programming Software Version 2 00 or later Release 2 60 provides a new feature multiplegateways Note that Windows Programming Software Version 2 10 is required to use this new feature See New Software Features for other improvements included in this release 2 December 15 1997 Important Product Information IC697 Factory LAN Ethernet Interface Type 2 GFK 1314F Functional Compatibility The IC697CMM742 Interface is compatible with the following products 1C697 CPU models 781 782 914 915 924 and 925 loaded with firmware versions 6 00 or higher Limited Server mode only operation is possible with older CPU models 731 2 771 2 4 12 780 4 60 For some features more recent CPU releases are required Ethernet Global Data Re
23. s document Increased LLC Transmit Queue Length The default length of the LLC transmit ring has been increased from 2 8 frames to 27 128 frames Log Event c entry 2 10f may have been witnessed during extremely heavy traffic conditions on the Local Area Network when the length was 8 Increased Station Manager Command Recall The Station Manager now maintains a list of the 10 most recently issued commands The keystroke CTRL R can be repeated to scroll through the list of previous commands The command list is not saved across module restarts or power cycles Important Product Information IC697 Factory LAN Ethernet Interface Type 2 7 GFK 1314F December 15 1997 Problems Corrected in This Release 2 60 ID Code CR60889 CR62254 CR63505 CR62481 CR62555 CR62990 CR61481 CR62846 CR63212 Description The limit of 16 ARP table entries can result in unnecessary transmission delays and net work traffic when a PLC needs to communicate with more than 16 other hosts The size of the ARP cache has been increased to 256 Memory buffers may be lost when Channels are arbitrarily re tasked while they are active Under certain rare conditions a frame received from the Ethernet network may not be immediately processed by the Ethernet Interface All frames are now queued for immediateprocessing Name Resolutioninformation the Adapter Name list the Aliases name list and the Interface s Adapter Name was retained
24. st always be selected when performing a Store operation Failure to follow this recommendation may result in unexpected operation of Ethernet Global Data and Name Resolution features Note this guideline does not apply to Store operations that include only Global Vars and or Resource which are not Hardware Config components Channel Data Transfer with One Repetition can Exhaust TCP Connections Because tearing down a TCP connection is time consuming it is possible that programming your ladder in a certain way can quickly exhaust all available TCP connections This can be avoided by programming your COMMREQs in a slightly different way Your ladder can benefit from this reprogramming if m The number of repetitions word 9 in an Establish Read Channel or Establish Write Channel COMMREQ is set to one 1 and a new COMMREOQ is issued immediately upon completion of the prior one m Each successive COMMREQ is directed to the same target device same IP address m Each successive COMMREOQO is directed to the same channel number To avoid TCP connection exhaustion you should set the number of repetitions COMMREOQ word 9 to two 2 and set the read write period COMMREQ words 10 and 11 to be very large such as 60 seconds With these parameters you can issue the first COMMREQ wait for the COMMREQ Status CRS word to turn to one 1 then issue the next COMMREQ wait for the CRS word to turn to one etc and there will not be TCP connec
25. ta per Channel between two IC697CMM 742 s can use up as much as 18 of the total network bandwidth when the Channels are all configured to run as fast as possible using 91x or 92x CPUs Network administrators consider 30 the threshold of Ethernet network overload If your application requires many simultaneous network connections between IC697CMM 742 Interfaces it is recommended that the minimum interval between host accesses read period and write period used in COMMREQs be set to the required rate for your particular application instead of as fast as possible This will reduce the risk of overloading the network with traffic to and from the IC697CMM 742 Interface CPU Performance Limitation Again due to its performance potential the IC697CMM 742 Interface can present a heavy load on the CPU at its maximum operating capacity It is strongly recommended that caution be taken when using multiple connections operating in an as fast as possible mode especially when a model 781 or 782 CPU is used The COMMREQ Status Word CRS Word may occasionally become FE07 or FE87 which means service requests are made to the CPU faster than the CPU can process them Although communications will proceed to the next repetition even when this is encountered data transfer for the current repetition of this connection would have failed to complete n u To avoid this situation configure the minimum interval between
26. tatus information The CHSNTP station manager command may be used to override the Ethernet Interface module s automatic server selection strategy and identify specific server s to be used See TCP IP Ethernet Communications for the IC697 PLC Station Manager Manual GFK 1186D for details If SNTP time synchronization is selected and no broadcast value is received within a 150 second period the Ethernet Interface determines that no SNTP supplied time is currently available for EGD timestamping In this case an entry is made in the PLC Fault Table and in the Ethernet Interface exception log The fault text is User Application Fault or LAN system software fault resuming the log event code is 29 In this case the Status word within a consumed exchange will indicate new data with the value 3 instead of the value 1 indicating that SNTP timestamping is enabled in the producing Ethernet Interface but that currently no server is available to it The timestamp within the exchange will be based on one of two possible time bases m if the Ethernet Interface has not been able to synchronize to any SNTP server since its power up restart it will use the PLC CPU s local clock value at power up restart as the time base m if the Ethernet Interface has at some point been able to synchronize to a server it will use the most recently received SNTP clock value from that server as the time base 10 Important Produ
27. tion exhaustion problems Interrupting an active channel allows the reuse of an existing TCP connection while a repetition count of one starts the time consuming TCP connection teardown immediately upon completion of the first transfer You will also achieve faster response as a new connection need not be established for each transfer AUI Cable Removal Power to the PLC must be turned off whenever the transceiver cable AUI cable is connected or disconnected at the IC697CMM742 Interface AUI port or at the transceiver SQE Enable If the AUI network port is used the IC697CMM742 Interface requires that the SQE test be enabled on the external transceiver connecting it to the Ethernet LAN Make sure your transceiver has SQE enabled Otherwise the Ethernet Interface will not go online and will log a LAN Severe Network Problem Attempting Recovery fault Important Product Information IC697 Factory LAN Ethernet Interface Type 2 GFK 1314F December 15 1997 Ethernet Interface PLC Installation Restrictions The IC697CMM742 Interface may not be used in an IC697 PLC expansion rack The Ethernet Interface will not function properly if placed there There may be no more than four 4 LAN Interfaces in a single PLC This limit applies to the total number of IC697CMM721 IC697CMM731 IC697CMM 741 IC697BEM741 and IC697CMM742 boards in the PLC PLC Power Supply Requirements If the AUI network port is used the IC697CMM 742 Interface re
28. w configuration data Important Product Information C697 Factory LAN Ethernet Interface Type 2 15 GFK 1314F December 15 1997 Ethernet Interface Operational Restrictions The Ethernet Interface Type 2 operates with some restrictions when used with IC697 PLC CPU versions 4 12 through 5 50 These Operational Restrictions together with differences in Startup Station Manager and Software Loader operation are described below 1 COMMREO operation is not supported Any COMMREOQ issued to the Ethernet Interface is ignored a COMMREQ Status CRS word is not returned to the PLC Instead the Ethernet Interface generates an event in its internal exception log Event 1c Entry 2 0011 indicating that the Channel API task is not active The Ethernet Interface also generates an entry in the PLC Fault Table LAN system software fault resuming The Ethernet Interface returns neither LAN Interface Status LIS nor Channel Status data to the PLC PLC CPU models IC697CPU73x and IC697CPU77x may limit the overall performance of a PLC used as a server device Under heavy load from other clients and hosts on the network the server PLC may generate errors with major error code 07 indicating that the volume of requests from the network have momentarily exceeded the processing capacity of the PLC CPU The request will need to be retried If possible try to reduce the volume of requests to the server PLC when this condition occurs If t
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