Mitsubishi Electronics FX3G User Manual
213
FX
3S
/FX
3G
/FX
3GC
/FX
3U
/FX
3UC
Series
Programming Manual - Basic & Applied Instruction Edition
7 Basic Instruction
7.12 PLS, PLF
1
Introdu
ction
2
Ov
ervi
ew
ew
3
Instruction
Li
st
4
D
evices
in Det
ai
l
5
Specifi
ed the
De
vice
&
C
onst
ant
ant
6
Bef
ore
ore
Pr
og
ra
mmi
ng
ng
7
Bas
ic
ic
Instruction
8
FN
C00-FN
C00-FN
C0
9
Program Fl
ow
9
FNC
10-FN
C19
Mov
e & Com
e & Com
pare
10
FNC
20-FNC
29
Arith. & Lo
gi
c
Operati
on
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.
addition, the reset state of T and C is also reset.
Please program in the following way to turn on M0 only once.
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.
operate PLS M600 (latched device) by resetting once using the ZRST instruction.
Circuit program
M0
X000
M0
PLS
M100
M0
Timing chart
one operation
cycle
one operation
cycle
ZRST instruction
execution
ZRST instruction
execution
PLS instruction
execution
PLS instruction
execution
X000
M 0
ZRST
Circuit program
M0
X000
M0
M100
M0
ZRST
RUN
STOP
RUN
Timing chart
ON during one
operation cycle
ON during one
operation cycle
X000
RUN/STOP
M600
(latched device)
PLS
instruction
Circuit program
X000
M8002
M600
PLS
M700
M600
ZRST