Delta DVP-ES2/EX2/SS2/SA2/SX2/SE manual Iret, Interrupt Return, Descriptions

3. Instruction Set

API

03

Mnemonic	Function
IRET	Interrupt Return

Controllers

ES2/EX2	SS2	SA2	SX2
		SE

OP

Descriptions

Program Steps

No contact to drive the instruction is required.

IRET: 1 step

N/A

IRET ends the processing of an interrupt subroutine and

returns execution back to the main program

PULSE

16-bit

32-bit

ES2/EX2

SS2

SA2

SX2

ES2/EX2

SS2

SA2

SX2

ES2/EX2

SS2

SA2

SX2

SE

SE

SE

API

04

Mnemonic	Function
EI	Enable Interrupt

Controllers

ES2/EX2	SS2	SA2	SX2
		SE

OP	Descriptions
	No contact to drive the instruction is required.
	Enables Interrupts, explanation of this instruction also
N/A	coincides with the explanation of the DI (disable interrupts
	instruction), see the DI instruction for more information.
	M1050~M1059

Program Steps

EI: 1 step

	PULSE				16-bit				32-bit
ES2/EX2	SS2	SA2	SX2	ES2/EX2	SS2	SA2	SX2	ES2/EX2	SS2	SA2	SX2
		SE				SE				SE

API

05

Mnemonic	Function
DI	Disable Interrupt

Controllers

ES2/EX2 SS2 SA2SE SX2

OP

Descriptions

Program Steps

No contact to drive the instruction is required.

DI: 1 step

DI instruction disables PLC to accept interrupts.

N/A

When the special auxiliary relay M1050 ~ M1059 for

disabling interruption is driven, the corresponding

interruption request will not be executed even in the range

allowed for interruptions.

PULSE

16-bit

32-bit

ES2/EX2

SS2

SA2

SX2

ES2/EX2

SS2

SA2

SX2

ES2/EX2

SS2

SA2

SX2

SE

SE

SE

Explanations:

1.EI instruction allows interrupting subroutine in the program, e.g. external interruption, timer interruption, and high-speed counter interruption.

2.In the program, interruption subroutines are enabled between EI and DI instructions. If there is no section requires to be interrupt-disabled, DI instruction can be omitted.

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