GE GFK-1004B Manual De Usuario

6-10

TCP/IP Ethernet Communications User’s Manual – January 1996

GFK-1004B

Table 6-8. Troubleshooting with ONLINE LED ON

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LED Indicators

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Possible Cause and Resolution

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The ONLINE LED
is ON, but there is
no network activity.

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There are several possible causes if a station cannot transfer data on the network.

These causes are described below with the appropriate action to be taken.

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PLC Access Problem

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To verify that the Ethernet Interface can access the PLC, issue successive
TALLY C Station Manager commands. If the PlcSweep tally is not increasing,
there are no windows being provided by the PLC.

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If any of the tallies PlcAbt, MyAbt, or Timeout are incrementing,

there may be a hardware problem with the Series 90-70 PLC backplane
interface. Check the PLC Fault Table for entries for the Ethernet
Interface.

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Make sure to set the Soft Switch parameter bponline to “YES”.

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Replace the digital controller board with a known good board.

Exception Log Event Error Codes

The error codes below appear in the Event column of a log event. To view the log, issue
the LOG command from the Station Manager.

Table 6-9. Exception Log Event Definitions

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Log Event

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Cause

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Powerup. A log entry of this event will appear every
time the Ethernet Interface is Restarted or powered
up.

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System events.

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PLC driver events.

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Service Agent events.

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LLC events.

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IP events

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TCP events

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ARP events

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ICMP events

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SRTP Server events

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Channel API events