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Diagnostic Tools Available for Troubleshooting

There are several tools to assist you in diagnosing problems with the Series 90 Ethernet Interface and the network.

ƒUse the Ethernet Interface LEDs to troubleshoot a problem on power-up of the Ethernet Interface and for an immediate visual summary of the operational state of the Interface.

ƒUse the Series 90 PLC Fault Table to troubleshoot a problem once the Interface is running. It provides a record of exceptions logged by the PLC, the Ethernet Interface, and other Series 90 modules. The PLC Fault Table may be accessed through the PLC programming software. Look in the PLC Fault Table for a logged fault, then refer to the PLC Fault Table section in this chapter for instructions on what action to take.

ƒUse the Status Data to troubleshoot ladder programs containing COMMREQ functions that initiate communications. The status data consists primarily of the Status bits and the Communications Status words.

ƒFor Ethernet Global Data operation, Exchange Status words can be used to troubleshoot exchange operations. Refer to the chapter: “Ethernet Global Data” for more information.

ƒUse the Station Manager software to troubleshoot a problem with the Ethernet Interface, with the network, with PLC backplane communication, or with your application. The LOG, TALLY, EXS, CHANNEL and STAT Station Manager commands are especially useful.

￿The LOG command provides a complete record of exceptions occurring with the network and Interface.

￿The TALLY command provides statistics about operation and performance of the network and Interface.

￿The EXS command provides information about COMMREQs.

￿The CHANNEL command displays detailed information about a specified SRTP communication channel.

￿The STAT command provides the current status on the operation of the Interface.

Refer to GFK-1186,TCP/IP Ethernet Communications for the Series 90 PLC Station

Manager Manual, for information on how to access and use the Station Manager software.

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TCP/IP Ethernet Communications for the Series 90™ PLC User's Manual– May 2002

GFK-1541B

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GE GFK-1541B manual Diagnostic Tools Available for Troubleshooting