Delta-electronics Extension Digital I/O Module DOP-EXIO14RAE Manual de usuario descargar pdf (Pagina 78)

Appendix C Use of Basic Instructions|DOP-EXIO Series

Revision March, 2008, Doc. Name: 2007PDD23000014 C-13

Timing Diagram:

1 scan time

Mnemonic Functions

END

Program End

Operand None

Explanations:

END instruction has to be placed in the end of a ladder diagram or instruction program. DOP-EXIO

series will start to scan from address 0 to END instruction and return to address 0 to restart the scan.

Program Example:

Ladder diagram: Instruction code: Operation:

LD X0

Loading in B contact of X0

AND X1

Series connecting A contact of X1

OUT Y1

Driving Y1 coil

X0 X1

END

Program end

Mnemonic Functions

NOP

No Operation

Operand None

Explanations:

NOP instruction does not conduct any operations in the program; therefore, after the execution of NOP,

the existing logical operation result will be kept. If the user wants to delete a certain instruction without

altering the length of the program, the user can use NOP instruction. If the user wants to delete a

certain instruction temporarily, the user can also use NOP instruction.

Program Example:

Ladder diagram: Instruction code: Operation:

LD X0 Loading in B contact of X0

NOP No operation

NOP

NOP instruction will be

omitted in the ladder diagram

OUT Y1 Driving Y1 coil

1 2 ... 73 74 75 76 77 78 79 80 81 82 83 ... 156 157

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Delta-electronics Extension Digital I/O Module DOP-EXIO14RAE Manual de usuario Pagina 78