482
FX
3U
/FX
3UC
Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
18 Floating Point – FNC110 to FNC139
18.10 FNC122 – EMUL / Floating Point Multiplication
18.10 FNC122 – EMUL / Floating Point Multiplication
Outline
This instruction executes multiplication of two binary floating point data.
→
For program examples of floating point operations, refer to Section 12.10.
→
For handling of floating point, refer to Subsection 5.1.3.
1. Instruction format
2. Set data
*1.
When a constant (K or H) is specified, it is automatically converted into binary floating point (real
number) when the instruction is executed.
3. Applicable devices
Explanation of function and operation
1. 32-bit operation (DEMUL and DEMULP)
Binary floating point data [
+1,
] is multiplied by binary floating point data [
+1,
], and
the multiplication result in the binary floating point format is transferred to [
+1,
].
When a constant (K or H) is specified as [
+1,
] or [
+1,
], it is automatically converted
into binary floating point.
Operand Type
Description
Data Type
Word device number storing binary floating point data used in multiplication
Real number
(binary)
*1
Word device number storing binary floating point data used in multiplication
Data register number storing the multiplication result
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
P
FNC 122
EMUL
D
−
Mnemonic
Operation Condition
16-bit Instruction
DEMUL
DEMULP
Mnemonic
Operation Condition
32-bit Instruction
13 steps
Continuous
Operation
Pulse (Single)
Operation
S
1
S
2
D
S
1
S
2
D
S
1
S
1
S
2
S
2
D
D
Command
input
FNC122
DEMUL
S
1
S
2
D
[ +1, ]
×
[ +1, ]
→
[ +1, ]
Binary floating point
Binary floating point
Binary floating point
S
1
S
1
S
2
S
2
D
D
S
1
S
1
S
2
S
2
FNC122
DEMUL
S
1
S
2
D
[ +1, ]
×
[ K100 ]
→
[ +1, ]
Binary floating point
Automatically
converted into binary
floating point
Binary floating point
S
1
S
1
D
D
Command
input
Содержание FX3U Series
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