Allen-Bradley D Series - Page 61

Settings for 1771-AS and 1771-ASB
Series A, B and C Remote I/O Adapters
Appendix B
B-4
Figure B.4
Module
Switch Assembly Settings for 1771-AS, -ASB series A and B
Adapter for PLC-2 Family Processors
12345678
O
N
O
F
F
O
N
O
F
F
1234
First I/O group number
(Table B.A)
I/O rack number
(Table B.A)
Always OFF
Address Switch Assembly
(SW-1)
Switch Assembly
(SW-2)
SD - always OFF
SD2 - without complementary I/O - always OFF
SD2 - with complementary I/O -
ON - Primary chassis
OFF - Complementary chassis
Pressed in at top
Closed (ON)
Pressed in at bottom
Open (OFF)
SD - always ON
SD2 - without complementary I/O
- always ON
SD2 - with complementary I/O -
ON - Primary chassis
OFF - Complementary chassis
Always ON
10819-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.A
I/O
Rack Selection for PLC-2 Family Processors
I/O Rack
Number
Switch Selections
4 5 6
First I/O Group
Number
Switch Selections
7 8
1 On On On 0 On On
2 On On Off 2 On Off
3 On Off On 4 Off On
4 On Off Off 6 Off Off
5 Off On On
6 Off On Off
7 Off Off On
Allen-Bradley PLCs