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6 Troubleshooting and Maintenance
6-10
CJ-series User Defined CAN Unit Operation Manual for NJ-series CPU Unit (W517)
6-4
Troubleshooting
Refer to the
NJ-Series CPU Unit Hardware User's Manual
(Cat. No. W500) and
NJ-Series CPU Unit
Software User's Manual
(Cat. No. W501) for more details on these errors.
6-4-1
CPU Unit’s ERR/ALM Indicator Lit or Flashing
Error
Probable cause
An I/O setting check error occurred.
•
Make sure that the Unit is mounted properly.
•
The CPU Bus Unit model registered in the Unit Configuration in the CPU
Unit does not match the actual Unit Configuration. Compare using "Syn-
chronize" operation and use one of the following procedures.
•
Correct the Unit number setting
•
Correct the project Unit Configuration and transfer to the CPU Unit
Special Unit access is denied.
•
Make sure that the Unit is mounted properly.
•
Restart the Unit. If operation is not restored even after the Unit is
restarted, replace the Unit.
An I/O Bus check error occurred.
•
Make sure that the Unit is mounted properly.
•
Restart the Unit. If operation is not restored even after the Unit is
restarted, replace the Unit.
Summary of Contents for CJ1W-CORT21
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Page 140: ...Appendices A 6 CJ series User Defined CAN Unit Operation Manual for NJ series CPU Unit W517...
Page 141: ...Index 1 CJ series User Defined CAN Unit Operation Manual for NJ series CPU Unit W517 I Index...
Page 144: ...Index 4 CJ series User Defined CAN Unit Operation Manual for NJ series CPU Unit W517 Index...