Delta-electronics Extension Digital I/O Module DOP-EXIO14RAE Manual de usuario descargar pdf (Pagina 106)

Appendix D Use of Application Instructions|DOP-EXIO Series

Revision March, 2008, Doc. Name: 2007PDD23000014 D-25

Mnemonic Operands Function

XCH D

Exchange

Bit Devices Word Devices

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

       

y Note:

1. If D

and D

are used in device F, only 16-bit instruction is applicable.

16-bit instruction (5 Steps)

XCH

Continuous

execution

32-bit instruction (9 Steps)

DXCH

Continuous

execution

y Flags: None

Operands:

: Data to be exchanged 1

: Data to be exchanged 2

Explanations:

The contents in the devices designated by D

and D

will exchange.

Program Example 1:

When X0 = Off→On, the contents in D20 and D40 exchange with each other.

D40

XCHP

D20

Before

execution

fter

execution

120

D20

D40

D20

D40

Program Example 2:

When X0 = Off → On, the contents in D100 and D200 exchange with each other.

D200D100

Before

execution

fter

execution

D100

D101

D100

D101

D200

D201

D200

D201

DXCHP

1 2 ... 101 102 103 104 105 106 107 108 109 110 111 ... 156 157

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