Mitsubishi Q Series

APP -11 APP -11
A
PPENDICES
MELSEC-Q
APPENDIX 2.4 Active Step Change Instruction (SCHG) Replacement Method
(1) Operation of active step change instruction
The active step change instruction deactivates the instruction-executed step and forcibly
activates the specified step in the same block.
S5 S6
Activates step 6 when X1
turns ON.
SCHG K6
aX1
aX2
(2) Active step change instruction replacement method
Using a jump transition and selection branching, create a program that will cause a jump to the
specified step when the transition condition is established.
(Jump transition destination step)
t6
t7
S6
t8t5
Causes jump to step 6 when X1 turns ON.
S6S5
S7
aX2 aX1