FC_NormalUnitVector2D

FC_NormalUnitVector2D - General Information

Overview

Task

Calculation of a unit vector that is orthogonal to a given 2-dimensional vector.

Description

This calculates a default vector which is orthogonal relative to the given vector i_stV.

Interface

Input	Data type	Description
i_stV	ST_Vector2D	Vector in relation to which an orthogonal unit vector is to be calculated.

Output	Data type	Description
q_etDiag	GD.ET_Diag	General library-independent statement on the diagnostic. A value not equal to ET_Diag.Ok corresponds to an diagnostic message.
q_etDiagExt	ET_DiagExt	POU-specific output on the diagnostic. q_etDiag = ET_Diag.Ok -> Status message q_etDiag <> ET_Diag.Ok -> Diagnostic message

Output

Data type

Description

q_etDiag

General library-independent statement on the diagnostic.

A value not equal to ET_Diag.Ok corresponds to an diagnostic message.

q_etDiagExt

POU-specific output on the diagnostic.

q_etDiag = ET_Diag.Ok -> Status message

q_etDiag <> ET_Diag.Ok -> Diagnostic message

Return Value

Data type	Description
ST_Vector2D	Unit vector which is orthogonal in relation to the given vector i_stV.

Diagnostic Messages

q_etDiag	q_etDiagExt	Enumeration value	Description
OK	Ok	0	Ok

The normal vector has been calculated successfully.