9.
9 -
19
MAINTENANCE FUNCTION
9.9.2
Priority setting
In addition to LEDs, the Q3ACPU and Q4ACPU are provided with an LED indicator on the
front face of the CPU module.
This indicator shows the following items:
1) Error message
2) CHK instruction numbers
3) Annunciator numbers, annunciator comments, the time when an annunciator
was switched ON, etc.
4) Character string and comment displays in accordance with LED instructions
5) Clock data
If several errors occurred at a time, the indication conforms to the following conditions.
1) Stop error is indicated unconditionally.
2) Operation continue error are indicated in accordance with error item numbers
in an order of priority set by default.
Priorities can be changed.(set with special registers SD207 to SD209)
3) If several errors with the same priority occur, a first detected error is
indicated.
The following shows how to set priorities in special registers SD207 to SD209.
Summary of Contents for Q2ACPU
Page 1: ......
Page 2: ......
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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