DVP-ES2-EX2-SS2-SA2-SX2-Operation Manual

3. Instruction Set
API Mnemonic Operands Function
17 D XCH P Exchange
Controllers
ES2/EX2 SS2 SA2
SE
SX2
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
D 1 * * * * * * * * DXCH, DXCHP: 9 steps
D 2 * * * * * * * *
PULSE 16-bit 32-bit
SA2
SX2 ES2/EX2 SS2 SX2 ES2/EX2 SS2
SE
ES2/EX2 SS2 SA2
SE
Operands:
D 1 : Device to be exchanged 1 D 2 : Device to be exchanged 2
Explanations:
1. The contents in the devices designated by D 1 and D 2 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.
SA2
SE
SX2
X0
XCHP
D20
D40
Before
execution
D20 120
After
execution
40 D20
D40
40
120
D40
Points to note:
1. As a 16-bit instruction, when the devices designated by D 1 and D 2 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 D 1 and D 2 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
M1303
D100L
Before
execution
9
After
execution
8
D100L
DXCHP D100 D100
D100H
20
40
D100H
D101L
8
9
D101L
D101H
40
20
D101H
3-71