Rockwell Automation 1772-LV Mini-PLC - 2/15 Programmable Controller (Series B) Programming and Operations User Manual
Page 41

Fundamental Instruction Set
Chapter 5
5Ć4
The second number denotes an I/O rack ad it always is a 1.
The third number denotes a module group. This number will range from 0-7.
The fourth and fifth numbers denote a terminal designation:
00-07 left slot of the module group
10-17 right slot of the module group
Section B
Relay Type Instructions
You can use six relay type instructions to write a program (Figure 5.2). We will
refer to these instructions as relay type instructions because of their similarities
to relay symbols. These instructions react to changes of input to change certain
electric control circuits. There are three kinds of relay type instructions: bit
examining, bit controlling, and branch instructions.
Figure 5.2
Relay Type Instructions
112
04
112
05
012
13
012
14
112
06
012
15
111
14
012
15
111
113
04
L
010
00
113
05
U
010
00
Bit examining: Examine On
Bit examining: Examine Off
Bit controlling: Energize
Branching Instructions
Bit controlling: Latch and Unlatch
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