Rockwell Automation 1771-ASB/E Remote I/O Adapter User Manual - Manual (Page 34)

3–4 Addressing Modes for Your Remote I/O
Publication 1771-UM001A-US-P - February 2000
Using StandardĆdensity I/O (8 point) Modules
Standard-density I/O modules provide eight input terminals or eight
output terminals. Figure 3.3 illustrates the 2-slot I/O group concept
with two 8-point input modules. Figure 3.4 shows an 8-point input
module and an 8-point output module in a 2-slot I/O group.
Figure 3.3
Two 8Ćpoint Input Modules Using One Word of the Input
Image Table
Input
Term inals
00
01
02
03
04
05
06
07
Input
Term inals
10
11
12
13
14
15
16
17
17 16 15 14 12 10 07 06 05 03 02 01 00 04 11 13
O utput im age table word corresponding
to the I/O group.
unused
17 16 15 14 12 10 07 06 05 03 02 01 00 04 11 13
Input im age table word corresponding
to the I/O group.
11867
2Ćslot I/O Group