User manual

Assigning Addressing Modes,
Racks, and Groups
Chapter 4
4-5
16-Point I/O Modules
Sixteen-point digital discrete I/O modules have up to 16 inputs or up to
16 outputs. A 16-point I/O module uses a full word in the input or output
image table.
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
00
01
02
03
04
05
06
07
10
11
12
13
14
15
16
17
00
01
02
03
04
05
06
07
10
11
12
13
14
15
16
17
15559
This I/O group uses 16 bits of the input image table and
16 bits of the output image table.
2Slot I/O Group with One 16pt Input Module
and One 16pt Output Module
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.
Because each 16pt module uses a full word in the
image table, the only type of module that you can install
in a 2slot I/O group with a 16pt input module is an 8 or
16pt output module that performs a complementary
function (inputs and outputs complement each other).
Since all blocktransfer modules are bidirectional,
they cannot be used to complement either input or
output modules.
IOIOIOIOIOIOIOIO
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
01234567
I/O Group Designation
Input/Output Designation
I/O Chassis Containing
16pt Modules
Output Image Table
Input Image Table
Word #
Word #