Rockwell Automation 1772-LV Mini-PLC - 2/15 Programmable Controller (Series B) Programming and Operations - Manual (Page 52)

Fundamental Instruction Set
Chapter 5
5Ć15
Figure 5.5
Get and Put
110
11
PUT
030
238
110
238
G
Put
Symbol: -(PUT)-
Purpose: Receives 16 bits of data from the immediately preceding get
instruction and stores the data at the specified data table word location. Used
with a get instruction to form a data transfer rung.
Syntax: Programmed in the output side of the ladder diagram rung
(Figure 5.5). This instruction can have the same address as other instructions in
the program. It is always programmed with a get instruction.
Function: Transfers an image of the 16 bits of one data table word to another
data table word when the rung is true.
NOTE: The put instruction acts only upon true rung conditions. There should
be no instructions between the get and put instructions. Position all conditions
before the get instruction.
Equal
Symbol: -|=|-
Purpose: Compares the data in your specified address with data stored at
another address in memory. It determines the rung condition.
Syntax: Programmed after the get instruction in the condition side of the ladder
diagram rung (Figure 5.6).
Function: The rung condition becomes:
True
If there is equality.
False
If there is not equality.
Figure 5.6
Equal To Comparison
When YYY = 100, GET/EQU comparison is true and 01002 is energized.
120
03
010
02
130
YYY
G
035
100
=
Reference Value
Compare Instructions