Mitsubishi Electric M800VW Series Programming Manual page 169

M800V/M80V Series PLC Programming Manual (1/2)
7 Basic Instructions
7.3 Output Instructions
PLF
 When PLF instruction is changed from ON to OFF, the designated device is turned 1 scan ON. For the other cases (OFF -
> OFF,OFF -> ON,ON -> ON), the designated device is turned OFF.
X5
 Turn the sequence program RUN switch to STOP after PLF instruction. Even if switched to RUN again, PLF instruction will
not be executed.
POINT
(1) Note that the device designated by D may be ON more than one scan if the PLS or PLF instruction is jumped by
the CJ instruction or if the subroutine program where the PLS/PLF instruction had been executed was not called
by the CALL instruction.
 Arithmetic errors
 There are no arithmetic errors associated with the PLS or PLF instructions.
 Program example
 The following program executes the PLS instruction when X9 goes ON.
X9
0
3
ON
X9 OFF
ON
M9 OFF
1 scan
 The following program executes the PLF instruction when X9 goes OFF.
X9
0
3
ON
X9 OFF
M9 OFF
IB-1501667-B
X5 OFF
D
PLF
M0 OFF
[Ladder mode]
PLS M9
END
[Ladder mode]
PLF M9
END
ON
1 scan
ON
ON
1 scan 1 scan
Steps
0
1
3
Steps
0
1
3
148
[List mode]
Inst. Device
LD X9
PLS M9
END
[List mode]
Inst. Device
LD X9
PLF M9
END