How to Archieve Data in Wincc OA.

[Chandan]

Hi Experts,
I am new to Wincc OA, and was going through the online help on Achieving the Process Data.
I have added the Archive Power Configuration in PARA and Enabled it for the DP which I need.

As per the manual I will get the Archive data in the Wincc OA Project Database, but when I open the database
it is showing me some files which I cannot open. The format of the file of "30 FILE" and some are showing
"15 FILE".
I am unable to understand the format of this file or may be I am referring the wrong file.

Can any one give me suggestions on the data archive.

regards
Chandan.

[leoknipp]

The files cannot be opened with a text editor or any other program.
If you want to read data stored in the files you have to use the WinCC OA CTRL functions, er.g. dpGetPeriod() or dpQuery with a TIMERANGE condition.

You can also use predefined panels and functions, e.g. the Event Screen or a trend widget.

For details please have a look at the WinCC OA documentation, e,g the chapter System Management --> Diagnostics or System Management --> Reporting.

Best Regards
Leopold Knipp
Senior Support Specialist

[Chandan]

Hi,
Thanks for the reply and suggestions.
I have configured the same with Trend Widget.

I am having one question, that in order to have historical data shall I need to
Configure Power Config ''Archive" in Para for each DPE.

Please suggest.

Regards
Chandan.

[leoknipp]

If data for a specific dp element shall be archived you have to add a _archive config. After adding the config you have to configure it to define the archive settings.
A power config can be used if you are using master datapoints.

There is no need to add a _archive config at all dp elements, it is only necessary for those dp elements where historical data shall be saved.

Best Regards
Leopold Knipp
Senior Support Specialist