User manual

Assigning Addressing Modes,
Racks, and Groups
Chapter 4
4-4
8-Point I/O Modules
Eight-point digital discrete I/O modules have a maximum of eight inputs or
up to eight outputs. Because they do not interfere with each other’s I/O
image, you can place any mix of 8-point I/O modules (including
bidirectional modules, such as block-transfer modules) in any order.
00
01
02
03
04
05
06
07
10
11
12
13
14
15
16
17
17 16 15 14 12 10 07 06 05 03 02 01 00041113
17 16 15 14 12 10 07 06 05 03 02 01 00041113
14965
2Slot I/O Group with One 8pt Input Module
and One 8pt Output Module
This I/O group uses 8 bits of the input image table and
8 bits of the output image table.
Output
Terminals
Input
Terminals
2-Slot
I/O Group
Output ImageTable Word Corresponding to the I/O Group.
Input ImageTable Word Corresponding to the I/O Group.
Unused
Output Bits Used
Input Bits UsedAlways 0
00
01
02
03
04
05
06
07
10
11
12
13
14
15
16
17
17 16 15 14 12 10 07 06 05 03 02 01 00041113
17 16 15 14 12 10 07 06 05 03 02 01 00041113
2-Slot
I/O Group
11867
2Slot I/O Group with Two 8pt Input Modules
This I/O group uses 16 bits of the input image table.
Input
Terminals
Input
Terminals
Output ImageTable Word Corresponding to the I/O Group.
Input ImageTable Word Corresponding to the I/O Group.
Unused