Leading Edge And Trailing Edge Outputs (Pls,Plf) - Mitsubishi MELSEC Q Series Programming Manual

5.3.8

Leading edge and trailing edge outputs (PLS,PLF)

PLS,PLF
PLS
PLF
Setting
Data
D
Function
PLS
(1) Turns ON the designated device when the execution command is turned OFF ON, and
turns OFF the device in any other case the execution command is turned OFF
ON
When there is one PLS instruction for the device designated by
specified device turns ON one scan.
See Section 3.9 for the operation to be performed when the PLS instruction for the same
device is executed more than once during one scan.
X5
(2) If the RUN/STOP key switch is changed from RUN to STOP after the execution of the PLS
instruction, the PLS instruction will not be executed again even if the switch is set back to
RUN.
X0
X0 OFF
M0 OFF
Command
Command
: Pulse conversion device (bits)
D
Internal Devices
R, ZR
Bit Word
ON, ON OFF or OFF
PLS M0
PLS M0
Operating the
RUN/STOP key
switch of CPU module
LD X0
"RUN STOP".
PLS
M0
END 0 END
CPU operation
stop time
ON
ON
1 scan of PLS M0
High
Basic
performance
J \
U \G
Bit Word
OFF of the execution command).
ON
X5 OFF
ON
M0 OFF
1 scan
Operating the
RUN/STOP
key switch of
Operating the
CPU module
RUN/STOP
"STOP RUN".
key switch of
CPU module
"RUN STOP".
LD X0
PLS M0
END
CPU operation
stop time
PLS,PLF
Process
Redundant Universal LCPU
PLS D
PLF D
Other
Zn Constants
DY
––
ON (i.e., at
during one scan, the
D
1 scan
Operating the
RUN/STOP
key switch of
CPU module
"STOP RUN".
LD X0
PLS M0
0
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