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74
I/O Allocation
Section 4-2
64-point Expansion I/O Boards
Analog I/O Board
Allocation
The maximum number of Analog I/O Boards that can be connected depends
on the model being used, as shown in the following table.
(When two CPM2B-MAD42 Analog I/O Boards are connected, there will be 8
inputs and 4 outputs.)
CPM2B-MAD63
CPM2B-MAD42
CPM2B-MAD21
32 inputs
Word m+1, bits 00 to 15 and
word m+2 bits 00 to 15 in IR
32 outputs
Word n+1, bits 00 to 15 and
word n+2, bits 00 to 15 in IR
Inputs
m+1
m+2
15
14
13
12
11
10
09
08
07
06
05
04
03
02
01
00
Outputs
n+1
n+2
Bits
Model
Number of inputs
Number of
outputs
Maximum number
of Boards
CPM2B-MAD63
6 inputs
3 outputs
1
CPM2B-MAD42
4 inputs
2 outputs
2
CPM2B-MAD21
2 inputs
1 outputs
3
6 inputs
3 outputs
Word m+1, word m+2,
word m+3, word m+4,
word m+5, and word m+6
Word n+1, word n+2, and
word n+3
4 inputs
2 outputs
Word n+1 and word n+2
Word m+1, word m+2,
word m+3, and word m+4
2 inputs
1 output
Word n+1
Word m+1 and word m+2
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