Allen-Bradley 1771-ASB - Page 67

Settings for 1771-AS and 1771-ASB
Series A, B and C Remote I/O Adapters
Appendix B
B-10
Figure B.10
Module
Switch Assembly Settings for 1771-AS, -ASB series A and B
Adapters for PLC-5 Family Processors with Complementary I/O
12345678
O
N
O
F
F
O
N
O
F
F
1234
First I/O group number
(Table B.G)
I/O rack number
(Table B.G)
Always OFF
Address Switch Assembly
(SW-1)
Switch Assembly
(SW-2)
ON - Primary chassis
OFF - Complementary chassis
Pressed in at top
Closed (ON)
Pressed in at bottom
Open (OFF)
ON - Primary chassis
OFF - Complementary chassis
Always ON
10822-I
Maximum I/O Rack Distance
ON - 10,000 cable ft. max. (57.6K baud)
OFF - 5,000 cable ft. max. (115.2K baud)
Table B.G
I/O
Rack Selection for PLC-5 Family with Complementary I/O
I/O Rack
Number
Switch Selections
4 5 6
First I/O Group
Number
Switch Selections
7 8
1 On On Off 0 On On
2 On Off On 2 On Off
3 On Off Off 4 Off On
4
1
Off On On 6 Off Off
5
1
Off On Off
6
1
Off Off On
7
1
Off Off Off
1
Valid for PLC-5/25 processors only
Allen-Bradley PLCs