Delta-electronics Extension Digital I/O Module DOP-EXIO14RAE Manual de usuario descargar pdf (Pagina 75)

Appendix C Use of Basic Instructions|DOP-EXIO Series

C-10

Revision March, 2008, Doc. Name: 2007PDD23000014

Mnemonic Functions

LDF

Falling-edge Detection Operation

X0~X17 Y0~Y17 M0~M1279 S0~S127 T0~T127 C0~C254 D0~D599

Operand

9 9 9 9 9 9

Explanations:

The method of using LDF is the same as using LD, but the actions of the two instructions differ. LDF

saves the current content and store the detected status of falling-edge to the accumulative register.

Program Example:

Ladder diagram: Instruction code: Operation:

LDF X0 Starting X0 falling-edge detection

AND X1 Series connecting A contact of X1

X0 X1

OUT Y1 Driving Y1 coil

Mnemonic Functions

ANDP

Riding-edge Series Connection

X0~X17 Y0~Y17 M0~M1279 S0~S127 T0~T127 C0~C254 D0~D599

Operand

9 9 9 9 9 9

Explanations:

ANDP instruction is used in the series connection of the contacts’ rising-edge detection.

Program Example:

Ladder diagram: Instruction code: Operation:

LD X0 Loading in A contact of X0

ANDP X1 X1 rising-edge detection in series

connection

X1X0

OUT Y1 Driving Y1 coil

Mnemonic Functions

ANDF

Falling-edge Series Connection

X0~X17 Y0~Y17 M0~M1279 S0~S127 T0~T127 C0~C254 D0~D599

Operand

9 9 9 9 9 9

Explanations:

ANDF instruction is used in the series connection of the contacts’ falling-edge detection.

1 2 ... 70 71 72 73 74 75 76 77 78 79 80 ... 156 157

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Delta-electronics Extension Digital I/O Module DOP-EXIO14RAE Manual de usuario Pagina 75