West Control Solutions KS98-1 - Manual (Page 105)

III-3.7 ARCTAN (arcus tangent function (No. 86))
y x
1
arctan 1) =
(
The function provides the arcus tangent of the input value, i.e. x1 is the angle the arcus tangent of which is calcu-
lated. Parameter Select is used to adjust, if the angle is provided in degree of angle [°] or in radian.
The calculation is output either as degree of angle [-90° ... 90°] or as radian [-
P
/
2
...
P
/
2
].
Example degree of angle:
y1= arctan(x1) x1 = 1°
= y1 = 45
Example radian:
y1= arctan(x1) x1 = 12rad
= y1 = 1,488
Parameter Description Controller display
Select
Unit: degree of angle (default) Ang.deg
Unit: radian Radian
III-3.8 ARCCOT (arcus cotangent function (No. 87))
y x
1
arccot 1) =
(
The function provides the arcus cotangent of the input value, i.e. x1 is the angle the arcus cotangent of which is cal-
culated. Parameter Select is used to adjust, if the angle is provided in degree of angle [°] or in radian.
The calculation is output in degree of angle [0° ... 180°] and in radian [0 ... ó].
Example degree of angle:
y1= arccot(x1) x1 = 45°
= y1 = 1,273
Example radian:
y1= arccot(x1) x1 = -12rad
= y1 = 3,058
Parameter Description Controller display
Select
Unit: degree of angle (default) Ang.deg
Unit: radian Radian
Trigonometric functions 9499-040-82711
III-105 ARCTAN (arcus tangent function (No. 86))
x1 y1
Select
(y1) = arctan (x1)
x1 y1
Select
(y1) = arccot (x1)