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6
6-35
GFK-1004B
Chapter 6 Troubleshooting
Table 6-10. Exception Log Event Codes - Continued
Log Event
Code Possible Cause and Resolution
Event “1c”
Channel API
events
(Continued)
20 “Backplane communications with PLC fault; lost request”
Internal error: An attempt to write to the user-specified reference address to
be used to hold the Detailed Channel Status Words failed internally.
21 “LAN system-software fault; resuming”
The Service Request Processor component of PLC CPU rejected a request.
Entry 3 contains the major-minor error code of the request. Entry 4 contains
a unique request identification number.
22 “LAN system-software fault; resuming”
Internal error: An attempt to find the channel machine corresponding to a
given channel number has failed. Entry 3 contains the particular channel
number.
23 “LAN system-software fault; resuming”
Internal error: An attempt to synchronize Channel API operating parameters
with those configured by the user failed.
24 “Backplane communications with PLC fault; lost request”
Internal error: An attempt to register with the Backplane (PLC) Driver
failed. Entry 3 contains an error status code describing the failure. Many
error codes are defined, the most noteworthy is ffff. This indicates that the
Backplane (PLC) Driver is not initialized. Consult GE Fanuc for the meaning
of any other codes.
25 “LAN IF can’t init-check parms; running soft Sw Utl”
Internal error: An attempt to allocate a queue header failed. This event
causes the Ethernet Interface to restart. If this error occurs within the first 60
seconds after the Ethernet Interface was restarted or power cycled, the
automatic restart will force the Ethernet Interface into the Soft Switch Entry
utility.
26 “LAN IF can’t init-check parms; running soft Sw Utl”
Internal error: An attempt to allocate a buffer pool failed. This event causes
the Ethernet Interface to restart. If this error occurs within the first 60
seconds after the Ethernet Interface was restarted or power cycled, the
automatic restart will force the Ethernet Interface into the Soft Switch Entry
utility.
27 “LAN system-software fault: aborted assoc. & resuming”
Internal error: A Channel Machine was issued an event when in an invalid
state. Entry 3 identifies the aborted channel number. Entry 4 identifies the
state. Entry 5 identifies the event. Valid state and event codes are defined in
the description for Entry 2 = 5.
28 “Backplane communications with PLC fault; lost request”
Internal error: An internal attempt to send a request to the Backplane (PLC)
Driver failed. Entry 3 contains an error status code describing the failure.
Valid codes are described in the description for Entry 2 = 24H. The
backplane transfer class code associated with the transfer is contained in
Entry 4. Valid class codes are defined in the description for Entry 2=19H
29 “LAN data memory exhausted-check par ms; resuming”
Internal error: An attempt to allocate a new backplane transfer tracking
structure failed. The backplane transfer class code to be used with the
transfer is contained in Entry 3. Valid class codes are defined in the
description for Entry 2=19H.
2a “Backplane communications with PLC fault; lost request”
Internal error: An attempt to allocate a status update structure failed.
2b “LAN system-software fault; resuming”
Internal error: A NULL COMMREQ data block pointer was detected.