
6 |
Table 6-8. Troubleshooting with ONLINE LED ON
LED Indicators | Possible Cause and Resolution |
The ONLINE LED | There are several possible causes if a station cannot transfer data on the network. |
is ON, but there is | These causes are described below with the appropriate action to be taken. |
no network activity. |
|
| PLC Access Problem |
| |
| To verify that the Ethernet Interface can access the PLC, issue successive |
| |
| TALLY C Station Manager commands. If the PlcSweeptally is not increasing, |
| there are no windows being provided by the PLC. |
| - If any of the tallies PlcAbt,MyAbt, or Timeoutare incrementing, |
| there may be a hardware problem with the Series |
| interface. Check the PLC Fault Table for entries for the Ethernet |
| Interface. |
| - Make sure to set the Soft Switch parameter bponlineto ªYESº. |
| - 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
Log Event | Cause | |
1 | Powerup. A log entry of this event will appear every | |
| time the Ethernet Interface is Restarted or powered | |
| up. | |
2 | Systemevents. | |
8 | PLC driver events. | |
b | Service Agent events. | |
c | LLC events. | |
11 | IP events | |
12 | TCP events | |
16 | ARPevents | |
18 | ICMP events | |
1b | SRTP Server events | |
1c | Channel API events | |
TCP/IP Ethernet Communications User's Manual ± January 1996 |
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