Delta-electronics Extension Digital I/O Module DOP-EXIO14RAE Manual de usuario descargar pdf (Pagina 89)

Appendix D Use of Application Instructions|DOP-EXIO Series

D-8

Revision March, 2008, Doc. Name: 2007PDD23000014

Mnemonic Operands Function

FEND

None The End of The Main Program (First End)

Bit Devices Word Devices

X Y M S K H KnX KnY KnM KnS T C D E F

y Note:

1. No operand.

2. No contact to drive the instruction is required.

16-bit instruction (1 Step)

FEND

Continuous

execution

- -

32-bit instruction

- - - -

y Flags: None

Explanations:

1. This instruction denotes the end of the main program. It has the same function as that of END

instruction when being executed by DOP-EXIO series.

2. CALL must be written after FEND instruction and add SRET instruction in the end of its

subroutine. Interruption program has to be written after FEND instruction and IRET must be

added in the end of the service program.

3. If several FEND instructions are in use, place the subroutine and interruption service programs

between the final FEND and END instruction.

4. After CALL instruction is executed, executing FEND before SRET will result in errors in the

program.

5. After FOR instruction is executed, executing FEND before NEXT will result in errors in the

program.

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Delta-electronics Extension Digital I/O Module DOP-EXIO14RAE Manual de usuario Pagina 89