Mitsubishi Electric FX3G SERIES Programming Manual page 214

FX /FX /FX Series Programmable Controllers
3G 3U 3UC
Programming Manual - Basic & Applied Instruction Edition
3. Caution for simultaneous instances of the ZRST instruction and the PLS instruction
The ZRST instruction resets the last stage for the PLS instruction and PLF instruction of the applicable device. In
addition, the reset state of T and C is also reset.
Circuit program
M0
ZRST
X000
Timing chart
X000
M 0
ZRST instruction
execution
PLS instruction
execution
Please program in the following way to turn on M0 only once.
Circuit program
M0
ZRST
X000
When the PLC mode is switched in the way "RUN → STOP → RUN (or power supply ON (RUN) → power supply OFF
→ power supply ON (RUN))" while a drive input remains ON, PLS M600 does not operate. However, it is possible to
operate PLS M600 (latched device) by resetting once using the ZRST instruction.
Circuit program
M8002
ZRST
X000
212
M0 M100
PLS M0
one operation one operation
cycle cycle
PLS instruction
execution
ZRST instruction
execution
M0 M100
M0
M600 M700
PLS M600
PLS
instruction
Timing chart
X000
RUN
RUN/STOP
M600
(latched device)
7 Basic Instruction
7.12 PLS, PLF
STOP RUN
ON during one ON during one
operation cycle operation cycle