Delta DVP-ES2/EX2/SS2/SA2/SX2/SE manual KnX KnY KnM KnS T ALT, Altp 3 steps

3. Instruction Set

API Mnemonic Operands Function Controllers

66	ALT		P			Alternate State					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	ALT, ALTP: 3 steps
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:

D: Destination device

Explanations:

144.The status of D is alternated every time when the ALT instruction is executed.

145.When ALT instruction is executed, ON/OFF state of D will be switched which is usually applied on switching two operation modes, e.g. Start/Stop

146.This instruction is generally used in pulse execution mode (ALTP).

Program Example 1:

When X0 goes from OFF to ON, Y0 will be ON. When X0 goes from OFF to ON for the second time, Y0 will be OFF.

X0

ALTP Y0

X0

Y0

Program Example 2:

Creating a flashing circuit by applying ALTP with a timer

When X20 = ON, T0 will generate a pulse every two seconds and output Y0 will be switched between ON and OFF by the pulses from T0.

X20 T0

TMR T0 K20

T0

ALTP Y0

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