Rockwell Automation 1772-LP3 PLC - 2/30 Programmable Controller Programming and Operations Manual - Manual (Page 312)

Addressing
Appendix A
AĆ5
Using 8ĆPoint I/O Modules
Figure A.3
Illustration of 2Ćslot Addressing with 8Ćpoint Input and Output Modules
17 16 15 14 13 12 11 10 07 06 05 04 03 02 01 00
Input
Terminals
Output
Terminals
17 16 15 14 13 12 11 10 07 06 05 04 03 02 01 00
Output image table word corresponding
to the I/O group.
Used Output bits
Input image table word corresponding
to the I/O group.
00
01
02
03
04
05
06
07
10
11
12
13
14
15
16
17
I/O Module
Group
Unused Output bits
Unused Input bits Used Input bits