Troubleshooting And Maintenance - Omron CJ1W-DRM21 Operation Manual

Machine automation controller cj-series, nj-series cpu unit
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Troubleshooting and Maintenance

CJ-series DeviceNet Units Operation Manual for NJ-series CPU Unit(W497)
This section describes error processing, periodic maintenance operations, and trouble-
shooting procedures needed to keep the DeviceNet network operating properly. We
recommend reading through the error processing procedures before operation so that
operating errors can be identified and corrected more quickly.
9-1 Troubleshooting with the DeviceNet Unit Indicators . . . . . . . . . . . . . . . . . 9-2
9-1-1
Determining Operating Status from the Indicators . . . . . . . . . . . . . . . . . . . . . . 9-2
9-1-2
Troubleshooting Errors Occurring in the DeviceNet Unit . . . . . . . . . . . . . . . . . 9-4
9-2 Error Log Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-28
9-2-1
Error Log Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-28
9-2-2
Error Codes and Detail Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-29
9-3 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-32
9-3-1
CPU Unit's ERR/ALM Indicator Lit or Flashing . . . . . . . . . . . . . . . . . . . . . . . 9-32
9-3-2
Remote I/O Communications Disabled . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-32
9-3-3
I/O Link Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-33
9-3-4
Communications Error Operation Settings . . . . . . . . . . . . . . . . . . . . . . . . . . 9-34
9-3-5
Scan List Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-34
9-4 Event Logs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-35
9-4-1
Overview of the Event Logs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-35
9-4-2
Error Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-36
9-4-3
Error Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-41
9-5 Maintenance and Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-60
9-5-1
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-60
9-5-2
Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-60
9-5-3
Replacing Faulty Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-61
9
9-1

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