Monitor float value over time period (average)

[michael.danzer]

Hi,

is there a already implemented way of monitoring a float value and return the average value over time (e.g. average voltage level over a time period of the last 5 minutes)?

Thanks
Michael Danzer

[leoknipp]

Can you please describe more accurate what "monitoring" means.
Do you want to calculate an average value for a given time span or do you want to see values stored in the database?

Best Regards
Leopold Knipp
Senior Support Specialist

[michael.danzer]

Hi!

Thanks for the reply.

I want to calculate the average value for a given time span. As i recall correctly, the value data will also be stored in an 5 minute database.

Regards
Michael

[leoknipp]

With a statistical datapoint function (config _dp_fct) you can calculate average values for a given timespan.
When an archiving (config _archive) is defined for the same dp element the calculated values can be stored in the database.

For detailed information please have a look the WinCC OA documentation:
Module PARA --> Data point configs --> _archive
Module PARA --> Data point configs --> _dp_fct

Best Regards
Leopold Knipp
Senior Support Specialist