256
FX3G/FX3U/FX3GC/FX3UC Series
Programming Manual - Basic & Applied Instruction Edition
9 Move and Compare – FNC 10 to FNC 19
9.8 FNC 17 – XCH / Exchange
9.8 FNC 17 – XCH / Exchange
Outline
This instruction exchanges data between two devices.
1. Instruction format
2. Set data
3. Applicable devices
Explanation of function and operation
1. 16-bit operation (XCH and XCHP)
Data is exchanged between and .
2. 32-bit operation (DXCH and DXCHP)
Data is exchanged between [ +1, ] and [ +1, ].
Operand Type Description Data Type
Device number storing data to be exchanged. 16- or 32-bit binary
Device number storing data to be exchanged. 16- or 32-bit binary
Oper-
and
Type
Bit Devices Word Devices Others
System User Digit Specification System User
Special
Unit
Index
Con-
stant
Real
Number
Charac-
ter String
Pointer
XYMTCSD.b KnX KnY KnM KnS T C D R U\G VZModifyKH E ""P
3333333 3 333
3333333 3 333
DXCH
DXCHP
Mnemonic Operation Condition
16-bit Instruction
5 steps
XCH
XCHP
Mnemonic Operation Condition
Continuous
Operation
Pulse (Single)
Operation
32-bit Instruction
9 steps
Continuous
Operation
Pulse (Single)
Operation
P
FNC 17
XCH
D
D
1
D
2
D
1
D
2
D
1
D
2
FNC 17
XCHP
D
1
D
2
Command
input
D
1
D
2
Before
execution
After
execution
K10
=
K36
=
K36
K10
=
=
Exchange
D
1
D
2
D
1
D
2
D
1
D
1
D
2
D
2
FNC 17
DXCHP
+1, +1,
D
1
D
2
D
1
D
2
D
1
D
2
Command
input
K10000
=
K1433600
=
K1433600
K10000
=
=
+1,
+1,
+1,
+1,
Before execution After execution
Exchange
D
1
D
2
D
1
D
2
D
1
D
2
D
1
D
2
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