CODESYS SIN

SIN is an IEC 61131-3 operator that returns the sine of a number. The input is an angle expressed in radians and may be any numeric basic data type, while the result is written to a REAL or LREAL variable. It is shown in a structured text assignment and in FBD.

Source checked8/8 values · 2026-10-26

Specification

2 sources

Language	iec 61131 3
Code	SIN
Dialect	CODESYS

Parameters

Name	Data type	Description
input variable	any numeric basic data type	Value whose sine is calculated; measures the angle in radians.
output variable	REAL, LREAL	Receives the sine value of the input.

Study notes

Permitted data types for input variables that measure the angle in radians: any numeric basic data type.
Permitted data types for the output variable: REAL and LREAL.
The permitted range for the input value is given as −263 to +263; on x86 and x64 systems, if the input value is outside the permitted range, the function returns the input value.
Example: SIN (0.5) gives the result q := 0.479426.
Shown in structured text as q := SIN (0.5); and also available in FBD.