Delta DVP-EX2 - Page 433

DVP-ES2/EX2/EC5/SS2/SA2/SX2/SE&TP Operation Manual - Programming
3-312
API Mnemonic Operands Function
Controllers
ES2/EX2/
EC5
SS2
SA2
SE
SX2
91 LDF Falling–edge detection operation
Type
OP
Bit Devices Word devices Program Steps
X Y M S K H KnX KnY KnM KnS T C D E F
LDF: 3 steps
S
*
*
*
*
*
*
PULSE
16-bit
32-bit
ES2/EX2/
EC5
SS2
SA2
SE
SX2
ES2/EX2/
EC5
SS2
SA2
SE
SX2
ES2/EX2/
EC5
SS2
SA2
SE
SX2
Operands:
S: device to be falling pulse triggered
Explanations:
LDF should be connected to the left side bus line. When the associated device S is driven from ON
to OFF, LDF will be ON for one scan cycle.
Program Example:
Ladder Diagram:
X0 X1
Y1
Instruction Code: Operation:
LDF X0 ; Load falling-edge contact X0
AND X1 ; Connect NO contact X1 in series.
OUT Y1 ; Drive Y1 coil