Delta DVP-ES2/EX2/SS2/SA2/SX2/SE manual Fend, End of The Main Program First End

DVP - ES2/SA2/SS2/SA2/SX2/SE Operation Manual - Programming

API

06

Mnemonic	Function
FEND	The End of The Main Program (First End)

Controllers

ES2/EX2	SS2	SA2	SX2
		SE

OP	Descriptions
N/A	No contact to drive the instruction is required.

Program Steps

FEND: 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

Explanations:

1.Use FEND instruction when the program uses either CALL instructions or interrupts. If no CALL instruction or interrupts are used, use END instruction to end the main program.

2.The instruction functions same as END instruction in PLC operation process.

3.CALL subroutines must be placed after the FEND instruction. Each CALL subroutine must end with the SRET instruction.

4.Interrupt subroutines must be placed after the FEND instruction. Each interrupt subroutine must end with the IRET instruction.

5.When using the FEND instruction, an END instruction is still required, but should be placed as the last instruction after the main program and all subroutines.

6.If several FEND instructions are in use, place the subroutine and interruption service programs between the final FEND and END instruction.

7.When CALL instruction is executed, executing FEND before SRET will result in errors.

8.When FOR instruction is executed, executing FEND before NEXT will result in errors.

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