Delta DVP-ES2/EX2/SS2/SA2/SX2/SE manual Mnemonic Operands Function Controllers, Xch

3. Instruction

Set

API

Mnemonic

Operands

Function

Controllers

17

D

XCH

P

Exchange

ES2/EX2 SS2

SA2

SX2

SE

Type

Bit Devices

Word devices

Program Steps

OP

X

Y

M

S

K

H KnX KnY KnM KnS T

C

D

E

F

XCH, XCHP: 5 steps

D1

*

*

*

*

*

*

*

*

DXCH, DXCHP: 9 steps

D2

*

*

*

*

*

*

*

*

PULSE

16-bit

32-bit

ES2/EX2

SS2

SA2

SX2

ES2/EX2

SS2

SA2

SX2

ES2/EX2 SS2

SA2

SX2

SE

SE

SE

Operands:

D1: Device to be exchanged 1 D2: Device to be exchanged 2

Explanations:

1.The contents in the devices designated by D1 and D2 will exchange

2.It is better to apply a pulse execution for this instruction (XCHP).

3.If operand D1 and D2 use index register F, only 16-bit instruction is available.

Program example:

When X0=OFF→ON, the contents of D20 and D40 exchange with each other.

X0

XCHP D20 D40

BeforeAfter

execution execution

D20	120	40	D20
D40	40	120	D40

Points to note:

1.As a 16-bit instruction, when the devices designated by D1 and D2 are the same and M1303

=ON, the upper and lower 8 bits of the designated devices exchange with each other.

2.As a 32-bit instruction, when the devices designated by D1 and D2 are the same and M1303

=ON, the upper and lower 16 bits in the designated device exchange with each other.

3.When X0 = ON and M1303 = ON, 16-bit contents in D100 and those in D101 will exchange with each other.

X0					Before	After
					execution	execution
	M1303			D100L	9	8	D100L
	DXCHP	D100	D100	D100H	20	40	D100H
				D101L	8	9	D101L
				D101H	40	20	D101H

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