Attention

IronPLC supports IEC 61131-3 Structured Text excluding I/O mapping.

ACOS

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

IEC 61131-3

Section 2.5.1.5.2

Support

Supported

Signatures

#

Input (IN)

Return Type

Support

1

REAL

REAL

Supported

2

LREAL

LREAL

Supported

Description

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].

Example

See Also

  • COS — cosine

  • ASIN — arc sine

  • ATAN — arc tangent