Wiring Diagrams; Labeling For Slc/Plc ® Systems - Allen-Bradley 1746 Series Installation Instructions Manual

42 Discrete I/O Modules

Wiring Diagrams

The wiring diagrams in these installation instructions are examples only. It is not
necessary to connect an I/O device to each and every I/O module terminal.
Labeling for SLC/PLC
In this document, 16-point I/O module wiring diagrams include both decimal and
octal numbers for I/O addressing and wire identification (see figure below). To
wire your 16-point I/O module when used in a SLC system, use the decimal
numbers in the upper left portion of each box. When used in a PLC system, use
the octal numbers in the lower right portion of the box. As shipped from the
factory, the I/O module has a decimal address label on the inside of its door. An
octal label kit should be included with your 16-point I/O modules, or a separate
octal conversion kit can be ordered, to allow you to convert your module to the
octal system.
IMPORTANT : Ensure the octal labels are used with your PLC system. Directions
on how to install the labels are included with the kit and on
page 30 of this document.
Figure 6:Decimal and Octal Labeling for 16-Point I/O Modules
For SLC (decimal)
IN 14
16
For PLC (octal)
Publication 1746-IN005A-US-P
®
Systems
L1
100/120V ac
L2
COMMONS
CONNECTED
INTERNALLY
1746-IA16
100/120V ac
IN 0
IN 1
0
1
IN 2
IN 3
2
3
IN 4
IN 5
4
5
IN 6
IN 7
6
7
IN 8
IN 9
10
11
IN 10
IN 11
12
13
IN 12
IN 13
14
IN 14 15
IN 15
16
17
AC COM
AC COM
SLC
PLC