Appendix 3.3 Forced Transition Bit (Trn) Replacement Method - Mitsubishi MELSEC-Q Series Programming Manual

APPENDICES

APPENDIX 3.3 Forced Transition Bit (TRn) Replacement Method

(1) Operation by forced transition bit
The forced transition bit forcibly satisfies a transition condition.
When the forced transition bits are used, the preset input conditions can be ignored and the
transition conditions can be satisfied in due order.
Sequence program
M0
M10
M1
M11
(2) Forced transition bit replacement method
Describe any bit device in the transition condition, where it is desired to cause a forced
transition, under the OR condition and turn ON the bit device described under the OR
condition to cause a forced transition.
S0
t0
S1
t1
APP -22
SET BL0\TR0
RST BL0\TR0
SET BL0\TR1
RST BL0\TR1
SFC program
User-set transition
condition
TRAN
M0
User-set transition
condition
TRAN
M1
SFC program
User-set transition
S0
condition
TRAN
t0
User-set transition
S1
condition
TRAN
t1
APP -22