12 Troubleshooting
12-34
NJ-series CPU Unit Software User’s Manual (W501)
* For details, refer to I/O Operation for Major Fault Level Controller Errors on page 12-7.
Event name Safe Mode Event code 40160000 hex
Meaning The Controller started in Safe Mode.
Source PLC Function Module Source details None Detection
timing
At power ON or
Controller reset
Error attributes Level Major fault Recovery Cycle the power
supply or reset
the Controller.
Log category System
Effects User program Stops. Operation Stops.*
System-defined
variables
Variable Data type Name
None --- ---
Cause and
correction
Assumed cause Correction Prevention
The power supply was turned ON to
the Controller when Safe Mode was
set on the DIP switch on the CPU
Unit.
--- ---
Attached
information
None
Precautions/
Remarks
If the Controller is started when the CPU Unit is in Safe Mode, the user program is not executed even if the startup
mode is set to RUN mode.
Event name Event Log Restoration Error Event code 10230000 hex
Meaning Restoring the event log failed.
Source PLC Function Module Source details None Detection
timing
At power ON or
Controller reset
Error attributes Level Observation Recovery --- Log category System
Effects User program Starts. Operation Not affected. However, the past event log cannot be
checked.
System-defined
variables
Variable Data type Name
None --- ---
Cause and
correction
Assumed cause Correction Prevention
A low battery voltage prevented reten-
tion of memory during a power inter-
ruption.
Replace the Battery. Replace the battery periodically.
Attached
information
Attached information 1: Error Details (0: Failure to restore all categories of logs, 1: Failure to restore system event log,
2: Failure to restore access event log, 100: Failure to restore user-defined event log)
Precautions/
Remarks
None
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