Справочник Пользователя для Mitsubishi Electronics FX

FX Series Programmable Controlers

5-127

This instruction performs the mathematical SIN
operation on the floating point value in S. The
result is stored in D.

a) The instruction must use the double word format: i.e., DSIN or DSINP. All source and

destination data will be double word; i.e., uses two consecutive data registers to store the
data (32 bits).
The source data is regarded as being in floating point format and the destination is also in
floating point format.

b) The source value must be an angle between 0 to 360 degrees in radians; i.e.,

0

° ≤ 

S< 360

°

Below is an program example of how to calculate angles in radians using floating point.

SIN
FNC 130
(Sine)

Calculates the
sine of a floating
point value

D - must be in floating
point number format
(32 bits).(radians)

D - a floating point 
value
(32 bits). 

DSIN,
DSINP:
9 steps

FX

0(S)

FX

0N

FX FX

(2C)

FX

2N(C)

FX

(2C)

FX

FX

2N(C)

FX

0N

FX

0(s)

PULSE-P

FX

(2C)

FX

FX

2N(C)

FX

0N

FX

0(s)

16 BIT OPERATION

FX

FX

0N

FX

0(s)

FX

(2C)

FX

2N(C)

32 BIT OPERATION

DSIN

X03

D510 D314

X001

K45

D0

MOVP

X002

D0

D4

FLT

K90

D0

MOVP

M8000

K31415926 K1800000000

D20

DEDIV

D4

D20

D30

DEMUL

D30

D100

DSIN

[ S ]

[ D ]

K45 degrees to D0

Convert D0 to float in D4,D5

K90 degrees to D0

Calculate 

π

 in radians (

π

/180)

Store as a float in D20,D21
Calculate angle in radians in D30,D31
(deg

° × π

/180 = rads)

Calculate SIN of angle in D100