ATANΒΆ
The IEC Operators and additional, norm-extending \ functions Returns the arc tangent (inverse function of tangent) of a number.
IN can be type BYTE, WORD, DWORD, INT, DINT, REAL, SINT, USINT, UINT, UDINT. The result OUT is calculated in arc minutes and must be type REAL.
Example in IL:
LD 0.5
ATAN
ST q (* Result is 0.463648 *)
Example in ST:
q:=ATAN(0.5);
Example in FBD: