LinTransf (FUN)¶

FUNCTION LinTransf : REAL

Performs a linear transformation

The transformation is performed by using the minimum and maximum values of the inputs for a linear approximation of the output value.

Hint: there is similiar funtionality with Util.LIN_TRAFO (function block). LinTransf / Util.LIN_TRAFO doenst have any states, so there is no real need to implement this functionality as a function block - function would be sufficient. Util.LIN_TRAFO has been implemented as a function block in the past for historic reason (number of output arguments of functions limited to 1). Implementing LinTransf as a function is simply about bargaining application memory foodprint against application stack usage.

InOut:

Scope	Name	Type	Comment
Return	LinTransf	REAL
Input	rIn	REAL	Input value
	rInMin	REAL	Minimum input value
	rInMax	REAL	Maximum input value
	rOutMin	REAL	Corresponding minimum output value
	rOutMax	REAL	Corresponding maximum output value
Output	xError	BOOL	Inconsistent inputs