Rockwell Automation 1791-XXXX Discrete I/O AC and DC Block I/O Input and Output Modules - Manual (Page 67)

Configuring Your Block I/O for PLC
Family Programmable Controllers
Chapter 4
4-10
Remote rack numbers which can have a complementary rack are rack
numbers 01 thru 07 only (Table 4.H).
When configured as complementary I/O:
PLC-2 can scan racks 01–07
PLC-5/11 can scan rack 03
PLC-5/20, PLC-5/30, PLC-5/40, PLC-5/60 can scan racks 01–07
Table 4.H
PLC-2 and PLC-5 With Complementary I/O
PLC-2
Rack
PLC-5
Rack
SW1 Switch Position
Rack
Number
Rack
Number 8 7 6 5 4 3
Rack 1 Not Valid 0 0 1 0 0 0
Rack 2 Rack 1 0 0 1 0 0 1
Rack 3 Rack 2 0 0 1 0 1 0
Rack 4 Rack 3 0 0 1 0 1 1
Rack 5 Rack 4 0 0 1 1 0 0
Rack 6 Rack 5 0 0 1 1 0 1
Rack 7 Rack 6 0 0 1 1 1 0
Rack 7 0 0 1 1 1 1
Figure 4.12
I/O Image Table for One Assigned Rack Number with Series B 16Ćpoint
Modules using Complementary I/O
Output Image
Input Image
0
1
2
3
4
5
6
7
0 17
0
1
2
3
4
5
6
7
7 10
1 I/O Rack
1791Ć0B16 1791Ć0B16 1791Ć0B16 1791Ć16B0
PLC
SLC 0 7 8 15
SLC 0 7 8 15
0 17 7 10 PLC
1791Ć16A0 1791Ć16A0 1791Ć16A0 1791Ć16A0
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
1/4 Rack 1/4 Rack 1/4 Rack 1/4 Rack