E L C P r o g r a m m i n g M a n u a l
F o r m o r e i nf o r m a t i o n v i sit :
w w w. e a t o n . c o m
MN05003003E
3-280
API Mnemonic
Operands
Function
99
PLF
S
Falling-edge Output
Bit Devices
Word devices
Program Steps
Type
OP
X Y M S K H KnX
KnY
KnM KnS T
C D E
F
S
*
*
PLF: 3 steps
ELC ELCB
ELCM
PB PC/PA/PH
PV
PB PH/PA
32 16
P
32 16
P
32 16
P
32 16 P 32 16 P
Operands:
S
:
Output address
Description:
When X0= ON
→
OFF (falling-edge trigger), the PLF instruction will be executed and M0 will be on
for one program scan..
Program Example:
Ladder Diagram:
X0
M0
PLF
M0
Y0
SET
Timing Diagram:
A scan cycle
X0
M0
Y0
Command
Code: Operation:
LD
X0
;
Load
A
contact
of
X0
PLF
M0
; M0 falling-edge output
LD
M0
;
Load
the
contact
A
of
M0
SET
Y0
;
Y0
latched
(ON)
Содержание ELC-PB
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