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22. TROUBLESHOOTING
22.2.4 When the "RUN" LED is flashing
Flashing of the "RUN" LED of a CPU module is described below.
With the QnACPU, when the RUN/STOP key switch is turned from STOP to RUN after
writing a program in the STOP state, the "RUN" LED flashes. Then, no CPU module error
occurs, but the operation stops.
To set the CPU module to RUN, either turn the RUN/STOP key switch to STOP then RUN
again, or reset the CPU module using the key switch. The "RUN" LED turns ON.
With the Q3ACPU and Q4ACPU, the message "PRG.CHECK!!" is displayed on the LED
indicator on the front panel of the CPU module.
Summary of Contents for Q2ACPU
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Page 221: ...12 12 12 OVERVIEW OF PROCESSING PERFORMED BY THE QnACPU ...
Page 222: ...12 13 12 OVERVIEW OF PROCESSING PERFORMED BY THE QnACPU ...
Page 237: ...12 28 12 OVERVIEW OF PROCESSING PERFORMED BY THE QnACPU MEMO ...
Page 271: ...16 13 16 POWER SUPPLY MODULE 4 Names and description of parts of the A66P ...
Page 343: ...21 21 13 MAINTENANCE AND INSPECTION 21 4 2 Replacement of the fuse for an output module ...
Page 357: ...22 12 22 TROUBLESHOOTING ...
Page 359: ...22 14 22 TROUBLESHOOTING MEMO ...
Page 429: ...App 32 APPENDICES Trigonometric function Classification Symbol Description ...
Page 537: ...App 140 APPENDICES REMARK 1 Message 1 An error code is displayed in 2 Alert 1 3 Alert 2 ...
Page 539: ...App 142 APPENDICES 2 Q2ACPU Q2ACPU S1 modules Unit mm inch ...
Page 541: ...App 144 APPENDICES 2 A66P power supply module Unit mm inch ...
Page 543: ...App 146 APPENDICES 3 A35B base unit 4 A38B A38HB A38HBEU base unit Unit mm inch Unit mm inch ...
Page 567: ...MEMO ...
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