313
FX
3U
/FX
3UC
Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
12 Data Operation – FNC 40 to FNC 49
12.10 FNC 49 – FLT / Conversion to Floating Point
11
FN
C30-
FN
C39
R
o
ta
tion and
Sh
ift
12
FNC
4
0
-FNC49
D
a
ta
Op
e
ra
tio
n
13
FNC5
0
-FNC5
9
H
igh Speed
Pr
ocessi
ng
14
FM
C6
0
-F
NC6
9
H
and
y
In
st
ru
cti
o
n
15
FNC7
0
-FNC7
9
Ex
te
rn
a
l F
X
I
/O
D
evi
ce
16
FNC8
0
-FNC8
9
Ext
e
rnal
FX
D
evi
ce
17
F
N
C1
00
-F
NC
10
9
Da
ta
Tr
ansf
e
r 2
18
FN
C
110-FN
C
13
9
Fl
oat
ing P
o
in
t
19
FN
C
140-FN
C
149
Da
ta
O
per
at
io
n
2
20
FN
C
15
0-F
N
C
159
P
o
si
tioni
ng
C
ont
ro
l
12.10 FNC 49 – FLT / Conversion to Floating Point
Outline
This instruction converts a binary integer into a binary floating point (real number).
1. Instruction format
2. Set data
3. Applicable devices
Explanation of function and operation
1. 16-bit operation (FLT and FLTP)
The binary integer data of
is converted into binary floating point (real number), and stored to [
+1,
].
2. 32-bit operation (DFLT and DFLTP)
The binary integer data of [
+1,
] is converted into binary floating point (real number), and stored to
[
+1,
].
Related instruction
Caution
1. It is not necessary to convert a constant (K or H) into floating point value.
The value of a K or H specified in each instruction for binary floating point (real number) operation is
automatically converted into binary floating point (real number). It is not necessary to convert such a constant
using by FLT instruction.
(K and H cannot be specified in RAD, DEG, EXP and LOGE instructions.)
Operand type
Description
Data type
Data register number storing binary integer
16- or 32-bit binary
Data register number storing binary floating point (real number)
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
Instruction
Description
INT(FNC129)
It is inverse of FLT instruction, and converts binary floating point into binary integer.
DFLT
DFLTP
Mnemonic
Operation Condition
P
FNC 49
FLT
D
16-bit Instruction
5 steps
FLT
FLTP
Mnemonic
Operation Condition
Continuous
Operation
Pulse (Single)
Operation
32-bit Instruction
9 steps
Continuous
Operation
Pulse (Single)
Operation
S
1
S
D
S
1
S
D
D
1
S
D
1
D
D
1
D
Command
input
→
( + 1, )
FNC 49
FLT
S
D
S
D
Binary
integer
D
Binary floating point
(real number)
D
1
S
D
1
S
D
1
D
D
1
D
Command
input
FNC 49
DFLT
S
D
( + 1, )
→
( +1, )
S
S
D
D
Binary integer
Binary floating point
(real number)