West Control Solutions KS98-1 - Manual (Page 104)

III-3.6 ARCCOS (arcus cosinus function (No. 85))
y x
1
arccos 1) =
(
valid for x x _ :
1 1
1 1 - £ £+
The function provides the arcus sinus of the input value, i.e. x1 is the angle the arcus sinus of which is calculated. Pa-
rameter Select is used to adjust, if the angle is provided in degree of angle [°] or in radian.
Calculation is either as degree of angle [0° ... 180°] or as radian [0... ó]. With arguments out of the function validity
range, output
y1 is set to 1,5 w 10 37 ( x1<-1) or -1,5 w 10 37 ( x1>1 ).
Example degree of angle:
y1= arccos(x1) x1 = 0,5°
= y1 = 60
Example radian:
y1= arccos(x1) x1 = 0,5rad
= y1 = 1,047
Parameter Description Controller display
Select
Unit: degree of angle (default) Ang.deg
Unit: radian Radian
9499-040-82711 Trigonometric functions
ARCCOS (arcus cosinus function (No. 85)) III-104
x1 y1
Select
(y1) = arccos (x1)