Exporting value archive

Smiffy · Post by **Smiffy** » Wed Apr 26, 2023 3:45 pm

I wish to read in the data from a value archive (the VAnnn files) and export it into another files in my own format.
I would like to perform this in control scripting.
I have searched the help files, but there seems to be no specific functions to access compressed archive files.
I have seen that there is a va.ctl script library that has functions that seem to offer this service, but I have no idea how they work.
Can anyone give me any pointers please?

kilianvp · Post by **kilianvp** » Wed Apr 26, 2023 10:42 pm

You can't read "VAnnn files" directly! But you can get the Data via dpGetPeriod. (If you have alot Data use dpGetPeriodSplit for better performance).

leoknipp · Post by **leoknipp** » Thu Apr 27, 2023 9:22 am

In the WinCC OA Documentation you can find a list of functions to read data for DP elements:
https://www.winccoa.com/documentation/W ... ionen.html

For details please have a look at the detailed explanation for every function.

Best Regards
Leopold Knipp
Senior Support Specialist

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