Rockwell Automation 1761 MicroLogix 1000 Programmable Controllers - Manual (Page 179)

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