Delta DVP-ES2/EX2/SS2/SA2/SX2/SE manual General PWM output

3. Instruction

Set

API

Mnemonic

Operands

Function

Controllers

144

GPWM

General PWM output

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

GPWM: 7 steps

S1

*

S2

*

*

*

*

D

PULSE

16-bit

32-bit

ES2/EX2

SS2

SA2

SX2

ES2/EX2

SS2

SA2

SX2

ES2/EX2

SS2

SA2

SX2

SE

SE

SE

Operands:

S1: Width of output pulse S2: Pulse output cycle (occupies 3 devices)

D: Pulse output device

Explanations:

1.When GPWM instruction executes, pulse output will be executes on device specified by D according to pulse output width S1 and pulse output cycle S2.

2.S1: pulse output width. Range: t = 0~32,767ms.

3.S2: pulse output cycle. Range: T = 1~32,767ms, S1 ≦ S2.

4.S2 +1 and S2 +2 are system-defined parameters, please don’t use them.

5.D: pulse output device: Y, M and S.

6.When S1 ≦ 0, no pulse output will be performed. When S1 ≧ S2, the pulse output device remains ON.

7.S1 and S2 can be modified when GPWM instruction is being executed

Program Example:

Assume D0 = K1000, D2 = K2000. When X0 = ON, Y20 will output pulses as the following diagram. When X0 = OFF, Y20 output will be OFF.

X0	t	T
	GPWM D0	D2	Y20

t=1000ms

Output Y20

T=2000ms

Points to note:

1.The instruction operates by the scan cycle; therefore the maximum error will be one PLC scan cycle. S1, S2 and (S2 - S1) should be bigger than PLC scan cycle, otherwise malfunction will occur during GPWM outputs.

2.Please note that placing this instruction in a subroutine will cause inaccurate GPWM outputs

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