
App -
48
APPENDICES
APPENDIX 2 Special Relay List
Special relays, SM, are internal relays whose applications are fixed in the PLC.
For this reason, they cannot be used by sequence programs in the same way as the
normal internal relays.
However, they can be turned ON or OFF as needed in order to control the CPU module
and remote I/O modules.
The heading descriptions in the following special relay lists are shown in Table App. 2.1.
For details on the following items, refer to the following manuals:
• Networks
Manual of the corresponding network module
• SFC
QCPU(Q mode)/QnACPU Programming Manual (SFC)
Table App. 2.1. Explanation of special relay list
Item
Function of Item
Number
• Indicates special register number
Name
• Indicates name of special register
Meaning
• Indicates contents of special register
Explanation
• Discusses contents of special register in more detail
Set by
(When set)
• Indicates whether the relay is set by the system or user, and, if it is set by the system, when setting is performed.
<Set by>
S
: Set by system
U
: Set by user (sequence programs or test operations from GX Developer)
S/U
: Set by both system and user
<When set>
Indicated only for registers set by system
Each END
: Set during each END processing
Initial
: Set only during initial processing (when power supply is turned ON, or when going from STOP
to RUN)
Status change
: Set only when there is a change in status
Error
: Set when error occurs
Instruction execution : Set when instruction is executed
Request
: Set only when there is a user request (through SM, etc.)
System switching
: Set when system switching is executed.
Corresponding
ACPU M9
• Indicates the corresponding special relay (M9
) of the ACPU.
(When the contents are changed, the special relay is represented M9
format change.)
• New indicates the special relay newly added to the QnACPU.
Corresponding
CPU
Indicates the corresponding CPU module type name.
QnA
: Indicates the QnA series and Q2ASCPU series.
Each CPU module model name: Indicates the relevant specific CPU module. (Example: Q4AR, Q2AS)
Содержание Q2ACPU
Страница 1: ......
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Страница 221: ...12 12 12 OVERVIEW OF PROCESSING PERFORMED BY THE QnACPU ...
Страница 222: ...12 13 12 OVERVIEW OF PROCESSING PERFORMED BY THE QnACPU ...
Страница 237: ...12 28 12 OVERVIEW OF PROCESSING PERFORMED BY THE QnACPU MEMO ...
Страница 269: ...16 11 16 POWER SUPPLY MODULE 2 Names and description of parts of the A62P A62PEU and A65P module ...
Страница 271: ...16 13 16 POWER SUPPLY MODULE 4 Names and description of parts of the A66P ...
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 ...
Страница 359: ...22 14 22 TROUBLESHOOTING MEMO ...
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 ...
Страница 567: ...MEMO ...
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