Rockwell Automation 1771-ASB/E Remote I/O Adapter User Manual - Manual (Page 35)

3–5 Addressing Modes for Your Remote I/O
Publication 1771-UM001A-US-P - February 2000
Figure 3.4
8Ćpoint Input and Output Modules Using Eight Bits of the
Input Image Table Word and Eight Bits of the Output Image
Table Word
Input
Term inals
00
01
02
03
04
05
06
07
O utput
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.
14965
O utput bits used
Input bits used Always 0
2Ćslot I/O Group
Using HighĆdensity (16 point) I/O Modules
16-point I/O modules provide 16 input terminals or 16 output
terminals. 16-point I/O modules use a full word in the input or
output image table when they are addressed as a 2-slot I/O group
(Figure 3.5). Two 16-point modules (one input and one output) can
be used in a 2-slot I/O group.