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9 Troubleshooting and Maintenance
CJ-series DeviceNet Units Operation Manual for NJ-series CPU Unit(W497)
9-4 Event Logs
9
9-4-3 Error Descriptions
Event name Master Fixed Allocation Area Setting Failed Event code 74610000 hex
Meaning An error occurred in one of the following operations for fixed allocation of the master.
• Fixed Allocation Area Setting 1 Switch (device variable *_Sw1MstrFixAloc1Cmd)
• Fixed Allocation Area Setting 2 Switch (device variable *_Sw1MstrFixAloc2Cmd)
• Fixed Allocation Area Setting 3 Switch (device variable *_Sw1MstrFixAloc3Cmd)
Source PLC Function Module Source details CJ-series Unit Detection
timing
At user operation
Error attributes Level Minor fault Recovery Error reset Log category System
Effects User program Continues. Operation Not affected.
System-defined
variables
Variable Data type Name
None --- ---
Cause and
correction
Assumed cause Correction Prevention
The master function is not enabled. Enable the master function. Enable the master function.
The scan list is not disabled. Disable the scan list. Disable the scan list.
CPU Unit is not in PROGRAM mode. Change the CPU Unit to PROGRAM
mode.
Change the CPU Unit to PROGRAM
mode.
More than one software switch
changed to TRUE at the same time.
Or, another software switch changed
to TRUE before processing was com-
pleted for a previous software switch.
Execute the software switch opera-
tions one at a time.
Execute the software switch opera-
tions one at a time.
Attached
information
None
Precautions/
Remarks
None
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