ACOS (arccosine of source)

The ACOS instruction calculates the arc-cosine of a Real value. Input and output values are in radians.
Languages supported: Function block diagram, ladder diagram, structured text.
This instruction applies to the Micro810, L20E, L50E, and L70E controllers.
ACOS
ACOS
ACOS parameters
Parameter
Parameter Type
Data Type
Description
EN
Input
BOOL
When set to true, the instruction is enabled.
  • TRUE: Execute the current computation.
  • FALSE: There is no computation.
Applies to ladder diagram programs.
IN
Input
REAL
The value must be within [-1.0 .. +1.0].
ACOS
Output
REAL
Arc-cosine of the input value (in set [-p1/2..+p1/2]) = 0 for invalid input.
ENO
Output
BOOL
Enables output. Applies to ladder diagram programs.

ACOS examples

ACOS function block diagram example
ACOS function block diagram example
ACOS ladder diagram example
ACOS ladder diagram example
ACOS structured text example
ACOS structured text example
(* ST Equivalence: *)
cosine := COS (angle);
result := ACOS (cosine); (* result is equal to angle *)
Results
Results
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