Delta Electronics Programmable Logic Controller DVP-PLC - Manual (Page 239)

6 Application Instructions API 00-49
DVP-PLC Application Manual 6-27
API Mnemonic Operands Function
17 D XCH P Exchange
Controllers
ES/EX/SS SA/SX/SC EH/SV
Bit Devices Word Devices Program Steps Type
OP X Y M S K H KnX KnY KnM KnS T C D E F
D
1
* * * * * * * *
D
2
* * * * * * * *
XCH, XCHP: 5 steps
DXCH, DXCHP: 9 steps
PULSE 16-bit 32-bit
ES EX SS SA SX SC EH SV ES EX SS SA SX SC EH SV ES EX SS SA SX SC EH SV
Operands:
D
1
: Data to be exchanged 1 D
2
: Data to be exchanged 2
Explanations:
1. If D
1
and D
2
are used in device F, only 16-bit instruction is applicable.
2. See the specifications of each model for their range of use.
3. The contents in the devices designated by D
1
and D
2
will exchange.
4. Flag: M1303 (designated by XCH working mode).
Program Example 1:
When X0 = Off→On, the contents in D20 and D40 exchange with each other.
X0
D40 XCHP D20
Before
execution
After
execution
120
120 40
40 D20
D40
D20
D40
Program Example 2:
When X0 = Off → On, the contents in D100 and D200 exchange with each other.
X0
D200 D100
Before
execution
After
execution
40 20
D100
D101
D100
D101
20 40
D200
D201
D200
D201
DXCHP
Remarks:
1. ES/EX/SS do not support M1303.
2. 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.
3. 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 individual designated device exchange with each other.
4. When X0 = On and M1303 = On, the 16-bit contents in D100 and those in D101 will exchange with each other.