Mitsubishi FX3U Series Programming Manual

520
FX3G/FX3U/FX3GC/FX3UC Series
Programming Manual - Basic & Applied Instruction Edition
18 Floating Point – FNC110 to FNC139
18.23 FNC135 – ATAN / Floating Point Arc Tangent
Program example
In the program example shown below, the TAN
−1
value of data (binary floating point) stored in D0 and D1 is
calculated, and the angle is output in 4-digit BCD to Y040 to Y057 when X000 turns ON.
Operation when "1" is stored in D0 and D1
The angle expressed in binary floating point (real
number) is converted into an integer (binary) ([3]).
X000
FNC137
DDEG
D10
The angle (in radians) is calculated by the TAN
− 1
operation ([1]).
The value in radians is converted into the value in
degrees ([2]).
D20
FNC135
DATAN
D0 D10
FNC129
INT
D20 D30
The angle expressed in integer (binary) is output to
the display unit ([4]).
FNC 18
BCD
D30 K4Y40
END
Binary floating point
(real number) value
1
D1 D0
[1]
Conversion
by TAN
− 1
operation
Binary floating point
(real number) value
0.785398
D11 D10
DATAN
Binary floating point
(real number) value
45
D21 D20
[3]
Conversion
into binary
45
b15 b0
D30
Binary
value
[4] BCD
operation
BCD
0 0 4 5
Y057 Y040
BCD
value
DDEG
[2] Conversion into degrees
INT

Mitsubishi FX3U Series Specifications

General

Brand	Mitsubishi
Model	FX3U Series
Category	Controller
Language	English