Mitsubishi Electronics FX3G User Manual
336
FX
3S
/FX
3G
/FX
3GC
/FX
3U
/FX
3UC
Series
Programming Manual - Basic & Applied Instruction Edition
12 Data Operation – FNC 40 to FNC 49
12.10 FNC 49 – FLT / Conversion to Floating Point
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
S1: This function is supported only in FX
3G
/FX
3GC
/FX
3U
/FX
3UC
PLCs.
S2: This function is supported only in FX
3U
/FX
3UC
PLCs.
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 a 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 with the FLT
instruction.
(K and H cannot be specified in RAD, DEG, EXP and LOGE instructions.)
converted into binary floating point (real number). It is not necessary to convert such a constant with the 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)
Real number (binary)
Oper-
and
Type
Bit Devices
Word Devices
Others
System User
Digit Specification
System User
Special
Unit
Index
Con-
stant
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
S1
S2
S1
S2
Instruction
Description
INT (FNC129)
Inverse of the FLT instruction, 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)
Pulse (Single)
Operation
32-bit Instruction
9 steps
Continuous
Operation
Pulse (Single)
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
integer
D
Binary floating point
(real number)
(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)
(real number)