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APPENDICES
Appendix 4.11 Index Register Processing
For QnACPU, the contents of index registers change when program processing transfers
between the main sequence program and interrupt programs.
• Transfer of program processing from main sequence program to interrupt program
The contents of the index registers of the main sequence program are saved, and
then these contents are passed to the interrupt program.
• Transfer of program processing from interrupt program to main sequence program
The index registers in the interrupt program are cleared, and the saved main
sequence program contents are written to them.
For ACPU, processing differs according to the CPU module type.
• The processing for AnACPU and AnUCPU is the same as for QnACPU, and no
program modification is required after conversion.
• In the case of AnCPU, AnNCPU, and A3HCPU, when program processing is
transferred from an interrupt program to the main program, the data updated in the
interrupt program are passed on to the main program.
When passing a value written to the index register in an interrupt program on to the
main sequence program, for example, modify the program so that the value is passed
on via a data register.
Содержание Q2ACPU
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Страница 343: ...21 21 13 MAINTENANCE AND INSPECTION 21 4 2 Replacement of the fuse for an output module ...
Страница 357: ...22 12 22 TROUBLESHOOTING ...
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Страница 417: ...App 20 APPENDICES 3 Shift instructions Classification Symbol Description n bit shift 1 bit shift 1 word shift ...
Страница 429: ...App 32 APPENDICES Trigonometric function Classification Symbol Description ...
Страница 432: ...App 35 APPENDICES 15 Clock instructions Classification Symbol Description Clock data read write ...
Страница 537: ...App 140 APPENDICES REMARK 1 Message 1 An error code is displayed in 2 Alert 1 3 Alert 2 ...
Страница 538: ...App 141 APPENDICES APPENDIX 6 EXTERNAL DIMENSIONS Appendix 6 1 CPU Module 1 Q3ACPU Q4ACPU modules Unit mm inch ...
Страница 539: ...App 142 APPENDICES 2 Q2ACPU Q2ACPU S1 modules Unit mm inch ...
Страница 541: ...App 144 APPENDICES 2 A66P power supply module Unit mm inch ...
Страница 542: ...App 145 APPENDICES Appendix 6 3 Main Base Unit 1 A32B base unit 2 A32B S1 base unit Unit mm inch Unit mm inch ...
Страница 543: ...App 146 APPENDICES 3 A35B base unit 4 A38B A38HB A38HBEU base unit Unit mm inch Unit mm inch ...
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