Mitsubishi Electric FX3G SERIES Programming Manual page 517

FX /FX /FX Series Programmable Controllers
3G 3U 3UC
Programming Manual - Basic & Applied Instruction Edition
Program example
In the program example shown below, common logarithm of "15" set in D50 is calculated, and stored to D30 and D31
when X000 turns ON.
X000
[1]
10
MOV
FNC 12
K15
MOV
FNC 49
D50
FLT
FNC126
D40
DLOG10
[2] Conversion into
D50
binary floating point
b15 b0
(real number)
15
Binary value FLT
18 Floating Point – FNC110 to FNC139
18.14 FNC126 – LOG10 / Floating Point Common Logarithm
Data used in the common logarithm operation is set
D50
([1]).
The data to be used is converted into binary floating
D40
point (real number) ([2]).
D30 The common logarithm operation is executed ([3]).
END
[3] Logarithm
D41 D40
operation
15
Binary floating point
DLOG10
(real number) value
D31 D30
1.176091
Binary floating point
(real number) value
515
11
12
13
14
15
16
17
18
19
20