Allen-Bradley MicroLogix 1000 User Manual

Using Program Flow Control Instructions
10–1
10 Using Program Flow Control
Instructions
This chapter contains general information about the program flow instructions and
explains how they function in your application program. Each of the instructions
includes information on:
• what the instruction symbol looks like
• typical execution time for the instruction
• how to use the instruction
In addition, the last section contains an application example for a paper drilling
machine that shows the program flow control instructions in use.
Program Flow Control Instructions
Instruction
Purpose
Page
Mnemonic Name
Purpose
Page
JMP and
LBL
Jump to Label and
Label
Jump forward or backward to the specified label
instruction.
10–2
JSR, SBR,
and RET
Jump to
Subroutine,
Subroutine, and
Return from
Subroutine
Jump to a designated subroutine and return. 10–4
MCR Master Control
Reset
Turn off all non-retentive outputs in a section of
ladder program.
10–7
TND Temporary End Mark a temporary end that halts program execution. 10–8
SUS Suspend Identifies specific conditions for program debugging
and system troubleshooting.
10–8
IIM Immediate Input
with Mask
Program an Immediate Input with Mask. 10–9
IOM Immediate Output
with Mask
Program an Immediate Output with Mask. 10–9
Programming
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Allen-Bradley MicroLogix 1000 Specifications

General

Brand	Allen-Bradley
Model	MicroLogix 1000
Category	Controller
Language	English