3. Instruction Set

API

Mnemonic

Operands

Function

Controllers

90

LDP

 

Rising–edge detection operation

ES2/EX2

SS2

SA2 SX2

 

 

 

SE

Type

Bit Devices

 

Word devices

 

 

 

 

Program Steps

OP

X

Y

M

S

K

H KnX KnY KnM KnS T

C

D

E

F

LDP: 3 steps

S

*

*

*

*

 

*

*

 

 

 

 

 

 

 

 

 

 

PULSE

 

 

16-bit

 

32-bit

ES2/EX2

SS2

SA2

SX2

ES2/EX2

SS2

SA2

SX2

ES2/EX2

SS2

SA2

SX2

SE

SE

SE

Operands:

S: device to be rising-edge triggered

Explanations:

LDP should be connected to the left side bus line. When the associated device S is driven from OFF to ON, LDP will be ON for one scan cycle.

Program Example:

Ladder Diagram:

 

 

X0

X1

Y1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Instruction Code:

Operation:

LDP

 

 

X0

; Load rising-edge contact X0

AND

 

 

X1

; Connect NO contact X1 in series

OUT

 

 

Y1

; Drive Y1 coil

Points to Note:

1.If the associated rising-edge contact is ON before PLC is power on, the contact will be activated after PLC is power on.

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Image 373
Delta DVP-ES2/EX2/SS2/SA2/SX2/SE manual Ldp, Rising-edge detection operation