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Mitsubishi Electric MELSEC-Q/L - Page 609

Mitsubishi Electric MELSEC-Q/L
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7 APPLICATION INSTRUCTIONS
7.12 Special Function Instructions
607
7
Program example
The following program seeks the inverse sine of the 32-bit floating decimal point real number at D0 and D1, and outputs the
angle to the 4 BCD digits at Y40 to Y4F.
[Ladder Mode]
[List Mode]
[Operations involved when D0 and D1 value is 0.5]
Calculates an angle (radian value)
by SIN
-1
operation ( )
Converts the radian value
into an angle ( )
Converts the angle in
32-bit floating-point real
number into an integer ( )
Outputs the integer-converted
angle to a display device ( )
1
2
3
4
Step Instruction Device
Conversion
to BIN
32-bit floating-point
real number
D21
D20
INT
BCD operation
BCD
ASIN
Conversion to angle
DEG
Y4F
BCD value
0
030
Y40
D30
b15 b0
BIN value
30
32-bit floating-point
real number
D1
D0
32-bit floating-point
real number
D11
D10
SIN
-1
operation
0
.
50
.
5235988
30

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