5-1
NJ-series CPU Unit Hardware User’s Manual (W500)
5
This section describes the confirmation methods and corrections for errors that occur in
the NJ-series Controller and describes hardware-related errors that can occur in the
PLC Function Module.
5-1 Operation after an Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
5-1-1 Overview of NJ-series Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
5-1-2 Fatal Errors in the CPU Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
5-1-3 Non-fatal error in CPU Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
5-2 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11
5-2-1 Checking to See If the CPU Unit Is Operating . . . . . . . . . . . . . . . . . . . . . . . . .5-11
5-2-2 Troubleshooting Flowchart for Non-fatal Errors . . . . . . . . . . . . . . . . . . . . . . . 5-12
5-2-3 Error Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13
5-2-4 Error Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-30
5-2-5 Troubleshooting Errors That Are Not in the CPU Unit . . . . . . . . . . . . . . . . . . 5-94
Troubleshooting
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