Addressing
Appendix A
A17
Table A.A
Series
B, 1771 Universal I/O Chassis, Addressing Modes vs. I/O Adapters
Addressing Mode
I/O Adapter Cat. No. I/O Points Per Module
2slot 1slot 1/2slot
1771AL 8
16
32
A
*
X
X
X
X
X
X
X
1771AS 8
16
32
A
C
X
X
X
X
X
X
X
1771ASB
Series A
8
16
32
A
C
X
A
A
X
A
X
X
1771ASB
Series B
8
16
32
A
C
X
A
A
C
A
A
A
Legend:
A Any
mix of modules in the respective pointspermodule category
.
*
Specific module placement with 16point input module in one slot of a slot pair and 8point output module in remaining slot.
C
Conditional module placement: you must use an input module and an output module in two adjacent slots, beginning with
slot 0 (i.e. 0 and 1, 2 and 3, etc.).
X
Will not work.
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