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3.9 Operation when the OUT, SET/RST, or PLS/PLF Instructions Use the Same Device
[Timing Chart]
• The ON/OFF timing of the X0 and X1 is different. (The specified device does not turn ON
throughout the scan.)
• The X0 and X1 turn OFF from ON at the same time.
When using a refresh type CPU module and specifying output (Y) in the PLF instructions,
the ON/OFF status of the device at the execution of the last PLF instruction in the scan is
returned as the output (Y).
M0
OFF
ON
END
END END
X0
X1
M0
OFF
OFF
ON
PLF
X0
X1
M0PLF
M0PLF
M0PLF
X0
X1
ON
M0 turns ON because
X0 goes OFF (ON OFF).
M0 turns OFF because X1
status is other than ON OFF.
M0 turns OFF because X1 status is
other than ON OFF.
(M0 remains OFF.)
M0 turns OFF because X0 status is
other than ON OFF
(M0 remains OFF.)
M0
OFF
ON
END
END
END
X0
X1
M0
OFF
OFF
PLF
X0
X1
M0PLF
M0PLF
M0PLF
X0
X1
ON
ON
M0 turns ON because
X0 goes OFF (ON OFF).
M0 turns ON because
X1 goes OFF (ON OFF).
(M0 remains ON.)
M0 turns OFF because X1 status is
other than ON OFF.
(M0 remains OFF.)
M0 turns OFF because X1 status is
other than ON OFF.