Variance (FB)

FUNCTION_BLOCK Variance

This function will update the experimental variance of the mean with respect to the new input parameter , which will be added to a series of data (stemming from previous calls).

The variance of the data is calculated according to: , where is the arithmetic mean of the data.

InOut:

Scope	Name	Type	Comment
Input	xEnable	BOOL	Reset
Input	lrInputValue	LREAL	New data
Output	lrVariance	LREAL	Experimental variance of the mean of