Errors During Normal Operation - Omron CJ1W-CT021 Operation Manuals

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Errors during normal operation

RUN ERC ERH Error
ON ON OFF Unit error
ON OFF ON System error
CJ-series High-speed Counter Units Operation Manual for NJ-series CPU Unit(W492)
5 Error Processing, Maintenance and Inspection
Probable cause
Overflow or underflow of Sim-
ple or Linear Counter
Preset error
An error occurred in the CPU
Unit.
• PLC Watch Dog Timer error
• Major Fault
• Partial Fault
• CPU Unit monitoring error
• I/O bus check error
Remedy
Check the error code with *_ErrCode1
(error code 1), *_ErrCode2 (error code
2), or Sysmac Studio. Apply appropriate
remedy according to the cause of the
error. Refer to 5-2 Error codes for more
information on error codes and how to
clear them.
Remove the cause of the major fault or
partial fault, then reset the Controller or
cycle its power.
If the error reoccurs, then replace the
CPU Unit.
Refer to 5-2-4 System Errors for more
information
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