Rockwell Automation 1772-LS_LSP,D17726.8.6 PROG/OPER MANUAL-MINI PLC-2/05 - Manual (Page 76)

Chapter
9
9Ć1
Data Manipulation Instructions
In this chapter, you will read about two types of instructions used to transfer and
compare data and how to use these instructions to perform operations of data
that is stored in the data table. These types of instructions are:
transfer instructions
compare instructions
There are two data transfer instructions. They are:
get
put
Get
Purpose: A Get instruction accesses all 16 bits of one word location in the data
table. It does not determine rung or require logic continuity. A Get also
provides a time base for a selectable timed interrupt. In an STI, the Get
instruction is the first instruction in the subroutine area. See chapter 15 for
more information.
ATTENTION: Use the subroutine area carefully because
unintended subroutine execution can cause unexpected
machine operation.
Programmed in the condition area of the ladder diagram rung. It can be located
at the beginning of a rung or with one or more conditions preceding it. It is
always true and intensified.
Get always accesses the word to which it is addressed. It displays a three
hexadecimal value of lower 12 bits (bits 0-13) of the specified word.
111
11
130
238
PUT
040
000
G
Chapter Objectives
Transfer Instructions