Balluff BVS ID-M1280 F1 Series, Configuration Manual

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BVS ID-M1280xF1-xx-xxx
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4.4.9 Secondary Device Functions
4.4.9.1 Basic Statistics
Description
With the Basic Statistics function, statistics processes can be executed, such as the calculation of minimum,
maximum and average. Furthermore, it is possible to calculate the moving average.
With Basic Statistics, trends can be displayed for the selected entry over the specified duration (between 1
second and 1 week or 1 to 1000 sampling points).
Mathematics/Algorithm
The following figure displays the realistic view of the calculation of minimum value, maximum value and average.
As shown in the figure, the calculation is initiated by the start command and stopped by the stop command.
The values are kept between start and stop until a reset is performed. If the operating voltage is switched off,
the current values are not stored and, as a result, are reset on the next start.
The next figure shows how the calculation of the moving average functions with the periodic window approach.
The average is calculated for each periodic window, whereby the size of the window can be set. As shown, the
average is calculated repeatedly for a window size of 5 elements. It must be mentioned that the windows do not
overlap.