_dp_fct / how to perform stat calculation over defined period

amichon · Post by **amichon** » Mon Oct 23, 2023 11:04 pm

can we use _dp_fct to perform a statistical calculation over a defined period?

for example I want to perform the calculation on an interval that can be modified programmatically

I'm looking for the best method to calculate an OEE

Thank you for your opinions

gschijndel · Post by **gschijndel** » Mon Oct 30, 2023 2:58 pm

Most statistical calculation can be done with a dyn function, so it might be doable without _dp_fct.

But not sure which calculations you need, so it is hard to say if this is a valid approach.

leoknipp · Post by **leoknipp** » Tue Oct 31, 2023 2:16 pm

A _dp_fct config has 2 possibilities:
-- Datapoint function: Triggered by a value change of the referenced datapoint elements
-- Statisitcal datapoint function: Calculation in a defined interval

If you want to do a calculation with different time intervals you have to write your own function for it which reads data from the database and does the calculation.

Best Regards
Leopold Knipp
Senior Support Specialist

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