Mitsubishi Electric Q173DSCPU - Floating-Point Value Conversion 64-Bit into 32-Bit: SFLT

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5 OPERATION CONTROL PROGRAMS
F/FS G
5.7.8 Floating-point value conversion 64-bit into 32-bit : SFLT
Ver.!
Format SFLT(S) Number of basic steps 2
[Usable data]
Setting
data
Usable Data
Bit device
Word device Constant
Calculation
expression
Bit
conditional
expression
Comparison
conditional
expression
16-bit
integer
type
32-bit
integer
type (L)
64-bit
floating
point
type (F)
Coasting
timer
16-bit
integer
type (K/H)
32-bit
integer type
(K/H, L)
64-bit
floating
point
type (K)
(S) — — —
— — — — — —
: Usable
[Setting data]
Setting data Description Data type of result
(S)
Data which will be converted into 32-bit
floating-point value
32-bit floating-point type
[Functions]
(1) The 64-bit floating-point (double precision real number) value stored in the device
specified with (S) is converted into the 32-bit floating-point (single precision real
number) value. Convertible data ranges are shown below.
-3.40
10
38
to -1.18 10
-38
, 0.0, 1.18 10
-38
to 3.40 10
38
(single precision real number)
(2) The 64-bit floating-point type is used as the data of floating-point type in the
Motion SFC program. Use this instruction to output the data into the external
devices that cannot use the 64-bit floating-point type.
POINT
The number of effective digits of 32-bit floating-point value data is approx. 7 digits.
Data in the seven digits or later of conversion result by SFLT instruction may not
match the (S) data.
[Errors]
(1) An operation error will occur if:
• The (S) data is not a valid 64-bit floating-point type.
• The (S) data after convert is outside the range of 32 bit floating-point type.
Ver.!
: Refer to Section 1.3 for the software version that supports this function.