The IEC operator yields the cosine value of a number.
Permitted data types for input variables that measure the angle in radians: any numeric basic data type
Permitted data types for output variables: REAL and LREAL
The permitted range for the input value is −2 to +2. On x86 and x64 systems: If the input value is outside of the permitted range, the function returns the input value.
Examples
Result in q: 0.877583
ST
q := COS(0.5);
FBD
