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Mitsubishi Electric MELSEC-Q/L - Page 167

Mitsubishi Electric MELSEC-Q/L
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5 SEQUENCE INSTRUCTIONS
5.3 Output Instructions
165
5
PLF
Turns ON the designated device when the execution command is turned ON OFF, and turns OFF the device in any other
case the execution command is turned ON OFF (i.e., at OFF OFF, OFF ON or ON ON of the execution
command).
When there is one PLF instruction for the device designated by (D) during one scan, the specified device turns ON one
scan.
See Page 122 Operation When the OUT, SET/RST, or PLS/PLF Instructions Use the Same Device for the operation to be
performed when the PLF instruction for the same device is executed more than once during one scan.
If the RUN/STOP key switch is changed from RUN to STOP after the execution of the PLF instruction, the PLF instruction
will not be executed again even if the switch is set back to RUN.
Note that the device designated by (D) may remain ON for more than one scan if the PLS or PLF instruction is
jumped by the CJ instruction or if the executed subroutine program was not called by the CALL instruction.
Operation error
There is no operation error in the PLS or PLF instruction.
X5 OFF
M0 OFF
ON
ON
1 scan
X5
M0
PLF
1 scan

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