Mitsubishi Q Series Programming Guide

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4 SFC PROGRAM CONFIGURATION
MELSEC-Q
4.3.4 Jump transition
A “jump transition” is a jump to a specified step within the same block which occurs when the
transition condition is satisfied.
m
Step “n”
(operation output [A])
Transition condition “b”
Step “m”
(operation output [B])
• When condition “b” is satisfied at step “n”
execution, step “n” (operation output [A]) is
deactivated, and processing proceeds to step
“m”.
(1) There are no restrictions regarding the number of jump transitions within a single block.
(2) In the parallel transition format, only jumps in the vertical direction are possible at each of the
branches.
Example 1: Jump transition program in vertical direction from branch to coupling
n
n
A program of a jump transition to another vertically branched ladder, a jump transition for
exiting from a parallel branch, or a jump transition to a parallel branch from outside a parallel
branch cannot be created.
Example 2: Program for exiting from parallel branch (cannot be designated)
No parallel coupling
Parallel transition
Jump transition
(3) Do not specify a jump transition to the current step when the transition condition is satisfied as
shown below. Normal operation is not performed when a jump transition to the current step is
designated.
n
n

Mitsubishi Q Series Specifications

General

Brand	Mitsubishi
Model	Q Series
Category	Control Unit
Language	English