Rockwell Automation 1791-XXXX Discrete I/O AC and DC Block I/O Input and Output Modules User Manual
Page 69
Configuring Your Block I/O for PLC
Family Programmable Controllers
Chapter 4
4-12
Figure 4.15
Input/Output Image Table Usage Example for One I/O Group for Series B
32Ćpoint Output Modules (cat. no. 1791Ć0A32, Ć0B32) Complemented by
Series B 32Ćpoint Input Modules (cat. no. 1791Ć32A0, Ć32B0)
110
111
010
011
Starting
I/O
Group
0
Block Data
Block Data
Type of I/O
I/O Rack Number
I/O Group Number
I/O Bit
0 1 0 00
1 = Input
0 = Output
PLCĆ2 Example
10838ĆI
Type of I/O
I/O Rack Number
I/O Group Number
I/O Bit
O 1 0 00
I = Input
O = Output
PLCĆ5 Family Example
11 10
7 6 5 4 3 2 1 0
16 15 14 13 12 11 10
17
7 6 5 4 3 2 1 0
16 15 14 13 12 11 10
17
11 10
7 6 5 4 3 2 1 0
16 15 14 13 12 11 10
17
7 6 5 4 3 2 1 0
16 15 14 13 12 11 10
17
Input Image
(used by Input Module)
Output Image
(used by output module)
Figure 4.16
I/O Image Table for One Assigned Rack Number with Series B 32Ćpoint
Modules and Series B 16Ćpoint Modules Complemented by each other
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
1791Ć0B32
1791Ć0B32
PLC
SLC
0
7
8
15
SLC
0
7
8
15
0
17
7
10
PLC
1791Ć32A0
1791Ć32B0
1791Ć16B0
1791Ć16A0
1/4 Rack
1/4 Rack
1/4 Rack
1/4 Rack
Reserved
Reserved
Reserved
Reserved