Справочник Пользователя для Mitsubishi Electronics FXCPU
18 Applied Instructions (Floating Point)
18.16 DENEG / Floating Point Negation
479
FXCPU Structured Programming Manual
[Basic & Applied Instruction]
11
Appl
ied
ied
In
stru
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(D
ata O
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12
Ap
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Instru
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Instru
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(High S
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Process
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13
App
lied Instr
lied Instr
ucti
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(Handy
Instruction)
14
Ap
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struct
struct
ions
(External FX I/O
D
evice)
15
Appl
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Instru
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(External
Dev
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(op
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dev
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tional
dev
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)
16
App
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d Instr
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(E
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Devi
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17
Ap
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(Dat
a T
ransf
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a T
ransf
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18
Appl
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In
stru
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(Float
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App
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(D
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a Oper
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App
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(Pos
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Control)
18.16 DENEG / Floating Point Negation
Outline
This instruction inverts the sign of binary floating decimal point (real number) data.
→ As for handling of floating decimal point, refer to FX Structured Programming Manual [Device &
Common].
1. Format and operation, execution form
2. Set data
3. Applicable devices
Function and operation explanation
1. 32-bit operation (DENEG/DENEGP)
The sign of the binary floating decimal point data of the device specified by
is inverted, and stored in the
device specified by
.
Program example
This is a program for inverting the sign of the binary floating decimal point data of D100, D101 when the X000
is turned ON, and storing in D100, D101.
is turned ON, and storing in D100, D101.
FX
3U(C)
FX
3G(C)
FX
3S
FX
2N(C)
FX
1N(C)
FX
1S
FX
U
/FX
2C
FX
0N
FX
0(S)
Instruction
name
Operation
Execution
form
Expression in each language
Structured ladder/FBD
ST
DENEG
32 bits
Continuous
DENEG(EN, d);
DENEGP
32 bits
Pulse
DENEGP(EN, d);
Variable
Description
Data type
Input
variable
variable
EN
Execution condition
Bit
Output
variable
variable
ENO
Execution state
Bit
Head device for storing the binary floating decimal point data of which sign
is to be inverted.
is to be inverted.
FLOAT(Single
Precision)
Precision)
Operand
type
Bit Devices
Word Devices
Others
System user
Digit designation
System
user
Special
unit
Index
Cons
tant
Real
Number
Character
String
Pointer
X Y M T C S D
.b KnX KnY KnM KnS T C D
R
U
\G
V Z Modifier K H
E
"
"
P
z z
z
z
DENEG
EN
ENO
d
DENEGP
EN
ENO
d
Command
input
input
DENEG
EN
ENO
d
Head device for storing the binary floating decimal
point data of which sign is to be inverted
point data of which sign is to be inverted
1.2345
-1.2345
D101
D100
D101
D100
X000
DENEGP
EN
ENO
d
D100
[ST]
DENEGP(X000,D100);
[Structured ladder/FBD]