Справочник Пользователя для Mitsubishi Electronics FXCPU
18 Applied Instructions (Floating Point)
18.1 DECMP / Floating Point Compare
441
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
ons
ons
(Pos
itioning
Control)
18.1
DECMP / Floating Point Compare
Outline
This instruction compares two data (binary floating decimal point), and issues the result of greater, smaller, or
equal to the bit device (3 points).
equal to the bit device (3 points).
→ 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
DECMP
32 bits
Continuous
DECMP(EN, s1, s2, d);
DECMPP
32 bits
Pulse
DECMPP(EN, s1, s2, d);
Variable
Description
Data type
Input
variable
variable
EN
Execution condition
Bit
Device for storing binary floating point data to be compared
FLOAT(Single
Precision)
Precision)
Device for storing binary floating point data to be compared
FLOAT(Single
Precision)
Precision)
Output
variable
variable
ENO
Execution state
Bit
Head bit device for output of result (3 points occupied)
ARRAY [0..2] OF Bit
Operand
type
Bit Devices
Word Devices
Others
System user
Digit designation
System user
Special
unit
Index
Con
stant
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
S4
z
S1
S2
z
S4
z z
z
S3
z
DECMP
EN
s1
s2
s1
s2
ENO
d
DECMPP
EN
s1
s2
s1
s2
ENO
d