9-1
CJ-series DeviceNet Units Operation Manual for NJ-series CPU Unit(W497)
9
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
Determining Operating Status from the Indicators . . . . . . . . . . . . . . . . . . . . . . 9-2
Troubleshooting Errors Occurring in the DeviceNet Unit . . . . . . . . . . . . . . . . . 9-4
CPU Unit's ERR/ALM Indicator Lit or Flashing . . . . . . . . . . . . . . . . . . . . . . . 9-32
Remote I/O Communications Disabled . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-32
Communications Error Operation Settings . . . . . . . . . . . . . . . . . . . . . . . . . . 9-34
Troubleshooting and Maintenance
Summary of Contents for CJ1W-DRM21
Page 12: ...Manual Structure 10 CJ series DeviceNet Units Operation Manual for NJ series CPU Unit W497 ...
Page 42: ...Revision History 40 CJ series DeviceNet Units Operation Manual for NJ series CPU Unit W497 ...
Page 345: ...Index 1 CJ series DeviceNet Units Operation Manual for NJ series CPU Unit W497 I Index ...
Page 349: ......