CalcRootLin (FB)

FUNCTION_BLOCK CalcRootLin

By use of this function block the root of a linear function \(y = a \cdot x + b\) with \(a\mbox{, }b\mbox{, }x \in \mathbb{R}\), if there is one, will be calculated.

InOut:

Scope	Name	Type	Comment
Input	lrParam1	LREAL	gradient of straight line (corresponds to \(a\))
	lrParam0	LREAL	height at which line cuts the vertical y-axis (corresponds to \(b\))
Output	byRoots	BYTE	number of roots 0: If line is parallel, but not identical to horizontal x-axis | 255: If line is identical to x-axis 1: Else
	lrRoot	LREAL	root