Allen-Bradley D Series - Page 65

Settings for 1771-AS and 1771-ASB
Series A, B and C Remote I/O Adapters
Appendix B
B-8
Figure B.8
Module
Switch Assembly Settings for 1771-AS and 1771-ASB series A
and B Adapters for PLC-5 Family Processors without
Complementary I/O
12345678
O
N
O
F
F
O
N
O
F
F
1234
First I/O group number
(Table B.E)
I/O rack number
(Table B.E)
Always OFF
Address Switch Assembly
(SW-1)
Switch Assembly
(SW-2)
Pressed in at top
Closed (ON)
Pressed in at bottom
Open (OFF)
10821-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.E
I/O
Rack Selection for PLC-5 Family without Complementary I/O
I/O Rack
Number
Switch Selections
1 2 3 4 5 6
First I/O Group
Number
Switch Selections
7 8
1 On On On On On Off 0 On On
2 On On On On Off On 2 On Off
3 On On On On Off Off 4 Off On
4
1
On On On Off On On 6 Off Off
5
1
On On On Off On Off
6
1
On On On Off Off On
7
1
On On On Off Off Off
1
Valid for PLC-5/25 processors only
Allen-Bradley PLCs