Attention

IronPLC can only run very simple programs. The steps described are accurate but many language features are not yet supported.

ACOS¶

Returns the arc cosine (inverse cosine) of a numeric input.

IEC 61131-3	Section 2.5.1.5.2
Support	Not yet supported

Signatures¶

#	Input (IN)	Return Type	Support
1	`REAL`	`REAL`	Not yet supported
2	`LREAL`	`LREAL`	Not yet supported

Returns the arc cosine of IN in radians. The input must be in the range [-1.0, 1.0]. The result is in the range [0, pi].

result := ACOS(REAL#1.0);   (* result = 0.0 *)
value := ACOS(LREAL#0.0);   (* value ~ 1.5707963 *)