Справочник Пользователя для Mitsubishi Electronics FXCPU
18 Applied Instructions (Floating Point)
18.10 DEMUL / Floating Point Multiplication
467
FXCPU Structured Programming Manual
[Basic & Applied Instruction]
11
Appl
ied
ied
In
stru
cti
cti
ons
(D
ata O
per
at
io
n)
12
Ap
plied
Instru
ctio
ns
Instru
ctio
ns
(High S
peed
Process
ing)
13
App
lied Instr
lied Instr
ucti
ons
(Handy
Instruction)
14
Ap
pl
ied In
struct
struct
ions
(External FX I/O
D
evice)
15
Appl
ied
ied
Instru
cti
cti
ons
(External
Dev
ice
ice
(op
tional
dev
ice)
)
tional
dev
ice)
)
16
App
lie
lie
d Instr
uction
s
s
(E
xter
nal
nal
Devi
ce)
17
Ap
pl
ied Inst
ruct
io
io
ns
(Dat
a T
ransf
er 2)
a T
ransf
er 2)
18
Appl
ied
ied
In
stru
cti
cti
ons
(Float
ing P
oin
oin
t)
19
App
lie
lie
d Instr
uction
s
s
(D
at
a Oper
at
ion 2)
20
App
lied Inst
lied Inst
ructi
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ons
(Pos
itioning
Control)
18.10 DEMUL / Floating Point Multiplication
Outline
This instruction multiplies two binary floating decimal points.
→ As for program example of floating decimal point operation, refer to section 11.10.
→ 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
S: Refer to "Cautions".
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
DEMUL
32 bits
Continuous
DEMUL(EN, s1, s2, d);
DEMULP
32 bits
Pulse
DEMULP(EN, s1, s2, d);
Variable
Description
Data type
Input
variable
variable
EN
Execution condition
Bit
Device for storing binary floating decimal point data to be multiplied.
FLOAT(Single
Precision)
Precision)
Device for storing binary floating decimal point data to be multiplied.
FLOAT(Single
Precision)
Precision)
Output
variable
variable
ENO
Execution state
Bit
Device for storing the multiplied binary floating decimal point data.
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
S1
S2
z
S3
z
S1
S2
z
S3
z
S1
S2
z
DEMUL
EN
s1
s2
s1
s2
ENO
d
DEMULP
EN
s1
s2
s1
s2
ENO
d