Rockwell Automation 1791-XXXX Discrete I/O AC and DC Block I/O Input and Output Modules User Manual
Page 64
Configuring Your Block I/O for PLC
Family Programmable Controllers
Chapter 4
4-7
Figure 4.6
I/O Image Table for One Assigned Rack Number with 32Ćpoint Modules
Output Image
Input Image
Reserved
0
1
2
3
4
5
6
7
Reserved
0
17
Reserved
Reserved
Reserved
Reserved
0
1
2
3
4
5
6
7
Reserved
7
10
1 I/O Rack
1791Ć32A0
1791Ć16AC
1791Ć32B0
1791Ć0B32
PLC
SLC
0
7
8
15
SLC
0
7
8
15
0
17
7
10
PLC
Reserved
Figure 4.7
Input/Output Image Table Usage Example for One Starting I/O Group for
32 Output Modules (cat. no. 1791Ć0A32, Ć0B32)
11 10
110
111
010
011
Starting
I/O
Group
0
Block Data
Block Data
Input Image
Output Image
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
PLCĆ3, PLCĆ5, PLCĆ5/250 Example
11 10
7
6
5
4
3
2
1 0
16 15 14 13 12 11 10
17
Reserved
Reserved
7
6
5
4
3
2
1 0
16 15 14 13 12 11 10
17