Mitsubishi Electric MELSEC-Q Series User Manual page 15

11. TROUBLESHOOTING
11.1 Troubleshooting Basics
11.2 Troubleshooting
11.2.1 Troubleshooting flowchart
11.2.2 Flowchart for when "POWER" LED is turned off
11.2.3 Flowchart for when the "RUN" LED is turned off
11.2.4 When the "RUN" LED is flashing
11.2.5 Flowchart for when "ERR." LED is on/flashing
11.2.6 Flowchart for when output module LED is not turned on
11.2.7 Flowchart for when output load of output module does not turn on
11.2.8 Flowchart for when unable to read a program
11.2.9 Flowchart for when unable to write a program
11.2.10 Flowchart for when program is rewritten
11.2.11 Flowchart for when UNIT VERIFY ERR. occurs
11.2.12 Flowchart for when CONTROL BUS ERR. occurs
11.3 Error Code List
11.3.1 Procedure for reading error codes
11.3.2 Error code list
11.4 Canceling of Errors
11.5 Input/Output Module Troubleshooting
11.5.1 Input circuit troubleshooting
11.5.2 Output circuit troubleshooting
11.6 Special Relay List
11.7 Special Register List
APPENDICES
APPENDIX 1 Error Code Return to Origin During General Data Processing
APPENDIX 1.1 Error code overall explanation
APPENDIX 1.2 Description of the errors of the error codes (4000
APPENDIX 2 External Dimensions Diagram
APPENDIX 2.1 CPU module
APPENDIX 2.2 Power supply module
APPENDIX 2.3 Main base unit
APPENDIX 2.4 Extension base unit
INDEX
A - 14
to 4FFF )
H H
A - 14