Delta Electronics AH500, Manual

Page: 212 / 547

C h a p t e r 5 A p p l i e d I n s t r u c t i o n s
5 - 9 7
API Instruction code Operand Function
133 D ASIN P S, D
Arcsine of a binary
floating-point number
Device X Y M S K 16# F KnM KnS D W T C V Z
S

 
D
 
Pulse instruction 16-bit instruction 32-bit instruction (6 steps)

–

E xp la nat io n

Arcsine value=sin
-1

S : Source value (binary floating-point value); D : Arcsine value
The relation between sine values and arcsine values is shown below.
R
S
2
2
-
0 1 ,0 -1 ,0
S: Sine va lu e
R: Arc sine v alue

The decimal floating-point value into which the sine value in S is
converted can only be in the range of -1.0 to +1.0. If it is not in the range,
the instruction will not be executed, an operation error flag will be ON,
and the error code 16#0E19 will appear.

If a conversion result is 0, a zero flag will be ON.

SM1064 is the zero flag in an Ox motion subroutine, and SM968 is the
zero flag in O100.

SM1049 is the operation error flag in an Ox motion subroutine, and
SM953 is the operation error flag in O100.
E xa mple

When X0.0 is ON, the arcsine of the binary floating-point value in (D1,
D0) is stored in (D11, D10).
X0.0
DASI N D0 D10
Binary floating- point value
Binary floating- point value
D 1 D 0
S
D D 11 D 10
Ar csine v alue
A dditio nal

re m ark
Please refer to section 5.3 for more information about performing
operations on floating-point numbers.