Statistics_DINT (FB)¶

FUNCTION_BLOCK Statistics_DINT

This function block will update the values of minimum, maximum and average with respect to the integral input parameter \(x_{n}\), which will be added to a set of integral data \(x_{n-1},\dots,x_{1}\) (stemming from previous calls).

\[\left \lfloor \frac{\sum_{i=1}^{n}x_{i}+\left \lfloor \frac{n}{2} \right \rfloor}{n} \right \rfloor\]

Note

Pay attention, that the returned average is of type DINT. In contrast to the arithmetic mean the result will be rounded.

InOut:

Scope	Name	Type	Initial	Comment
Input	`xEnable`	`BOOL`		Reset
Input	`diInput`	`DINT`		New data \(x_{n}\)
Output	`diMin`	`DINT`	16#7FFFFFFF	Minimum of set \(x_{n},\dots,x_{1}\)
	`diMax`	`DINT`	DWORD_TO_DINT(16#80000000)	Maximum of set \(x_{n},\dots,x_{1}\)
	`diAverage`	`DINT`		Rounded avarage of data \(x_{n},\dots,x_{1}\)
	`xOverrun`	`BOOL`		`TRUE`: In case of overflow The module will compensate this by a minor weighting of the old data leading to inaccuracy of the result