117
2
3
4
5
6
7
8
3.9
O
per
atio
n when the
OUT
, SET/RST
, or PLS/PLF
Inst
ructions 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 ON from OFF at the same time.
When using a refresh type CPU module and specifying output (Y) in the PLS instructions, the ON/OFF status of the
device at the execution of the last PLS instruction in the scan is returned as the output (Y).
(4) PLF instructions using the same device
The PLF instruction turns ON the specified device when the execution command is turned OFF from ON.
It turns OFF the device at any other time (OFF to OFF, OFF to ON, or ON to ON).
If two or more PLF instructions using the same device are executed in one scan, each instruction turns ON the device
when the corresponding execution command is turned OFF from ON and turns OFF the device in other cases.
For this reason, if multiple PLF instructions using the same device are executed in a single scan, a device that has been
turned ON by the PLF instruction may not be turn ON during one scan.
M0
O
FF
O
N
EN
D
EN
D
EN
D
X0
X1
M0
O
FF
O
FF
O
N
P
L
S
X0
X1
M0
P
L
S
M0
P
L
S
M0
P
L
S
X0
X1
O
N
O
N
M0
turns
O
FF because
X1
status is
o
ther than
O
FF
O
N.
M0
turns
O
N because
X1
go
es
O
N
(O
FF
O
N
)
.
M0
turns
O
FF because
X0
status
is
o
ther than
O
FF
O
N.
(M0
remains
O
FF.
)
M0
turns
O
N because
X0
go
es
O
N
(O
FF
O
N
)
.
M0
O
FF
O
N
EN
D
EN
D
EN
D
X0
X1
M0
O
FF
O
FF
O
N
P
L
S
X0
X1
M0
P
L
S
M0
P
L
S
M0
P
L
S
X0
X1
O
N
M0
turns
O
N because
X0
go
es
O
N
(O
FF
O
N
)
.
M0
turns
O
N because
X1
go
es
O
N
(O
FF
O
N
)
.
(M0
remains
O
N.
)
M0
turns
O
FF because
X1
status is
o
ther than
O
FF
O
N.
(M0
remains
O
FF.
)
M0
turns
O
FF because
X0
status is
o
ther
than
O
FF
O
N.
