Chapter 12 Troubleshooting
12
Troubleshooting...............................................................................................12-1
12.1 Basic procedure for troubleshooting.................................................................................12-1
12.2 Troubleshooting ...........................................................................................................................12-2
12.2.1 The power LED is turned off.............................................................................................12-2
12.2.2 The STOP LED is flickering ..............................................................................................12-3
12.2.3 RUN and STOP LED are off.............................................................................................12-4
12.2.4 The load of the output module is not operating.......................................................... 12-5
12.2.5 Program download is unable............................................................................................12-6
12.3 Troubleshooting questionnaire.............................................................................................12-7
12.4 Troubleshooting examples......................................................................................................12-8
12.4.1 Input circuit troubles a nd corrective actions ................................................................12-8
12.4.2 Output circuit troubles and corrective actions.............................................................12-9
12.5 Error code list..............................................................................................................................12-11