237
FX
3U
/FX
3UC
Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
9 Move and Compare – FNC 10 to FNC 19
9.8 FNC 17 – XCH / Exchange
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In
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Speci
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Bef
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Bas
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FNC0
0
-FNC0
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P
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FNC1
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-FNC1
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M
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10
FNC
20-
FNC
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Ar
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Logi
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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
X Y M T C S D
.b KnX KnY KnM KnS
T
C
D
R U
\G
V
Z Modify K
H
E
"
"
P
3
3
3
3 3 3 3
3
3 3
3
3
3
3
3 3 3 3
3
3 3
3
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