5.
5 -
2
I/O NUMBER ASSIGNMENT
5.2
I/O Number Assignment Concept
When the PLC power is ON or the CPU module is reset, the I/O assignment described
below is performed.
In the sequence program, designate the I/O numbers assigned in accordance with the
following.
(1) I/O numbers are sequentially assigned from left to right, taking slot 0 (The slot to the
right of the CPU module) of the main base unit to be "0".
(2) The I/O modules and special function modules mounted to the main base unit occupy
the I/O numbers corresponding to the number of I/O points for each module.
(3) 16 points are assigned to the empty slots where no I/O module or special function
module is mounted.
(4) If an extension base unit is connected, its assignment starts from the number
immediately after the number assigned to a main base unit.
The order of assignment for extension base units is not the order in which the
extension base units are connected, but the order of the stage numbers set for the
extension base units. It is possible to connect extension base units as follows: main
base unit 2nd extension base stage
1st extension stage.
(5) If any extension stage number is skipped, I/O points are assigned with assuming that
"all the skipped stage 8 slots" occupy 16 points.
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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