Rockwell Automation 1794-ASB/E Remote I/O Adapter Module User Manual - Manual (Page 44)

3–10 Communicating with FLEX I/O Modules
Publication 1794ĆUM009D-EN-P - April 2004
Input modules and Output modules in the same group.
Eight terminal bases per adapter (maximum)
Adapter
20128
Each module represents 1/4 of an I/O group
Group 0 Group 1
Input Output Input Output Output Input
8Ćpoint Compact Addressing - Digital Modules
4 modules represent 1 I/O group
Input Output
00 07 10 17 00 07 10 17
0
1
2
3
4
5
6
7
I/O Group
Input Image Table Output Image Table
M0 M1 M2 M3 M4 M5 M6 M7
IL = Input Low Byte
IH = Input High Byte
OL = Output Low Byte
OH = Output High Byte
ASB/E IL IL
OL
IA8 IA8 IA8
OL
M0ĆIL
M5ĆIL
M2ĆIL
M7ĆIL
M1ĆOL
M4ĆOL
M3ĆOL
M6ĆOL
OW8
OL
IL
OA8 OA8
Compact 8Ćpoint Addressing Example - 8 digital modules = 1/4 logical rack
I/O Group 0 I/O Group 1
OW8 IA8
4 module positions to an I/O group
Legal Module Placement in 8Ćpoint Compact Addressing
Two 8Ćpoint input modules and two 8Ćpoint output modules (or empty
slots) in an I/O group. Module type must alternate within an I/O group:
input, output, etc.
OL
IL
Note: Shaded areas represent unavailable data
I/O groups 2-7 are available to additional adapters.
One block transfer module with 3 empty slots
One block transfer module, followed by an empty slot, another
block transfer module and another empty slot.