Hi Oreca,

I am a bit late for the discussion  , but I am having having a similar issue in my current project. We have the PCS7 v9.1 SP2 with wincc 7.5 and the CEMAT library (just for indication).

I want to use the same logic of the button "@BtnTrendsOnline" in the "@Buttons11.Pdl" to create and save trends by the operators but I want to add 3 parameters to categorize them even better (this logic is used by our current trends application but it will be soon decommisioned, and we want to replicate the same logic in WinCC).

But when looking into the matter, I found out that the trends are saved in trg files and their configuration in trc files. The trg is simple i found a script in the "@PG_APL_SaveTrendGroup.Pdl", but I noticed that the script creates the trg file, and only when the trend is opened for the first time that the trc is created. But when I insert an "OnlineTrendControl" object directly in the view, I cannot save the xml (trc) file. The exe application that does this can't be modified to include more than 2 parametres (trend group name+user), i want to add 3 more.

Is there certain functions that I can use to automate this process? For the moment I added 3 input fields in "@PG_APL_SaveTrendGroup.Pdl" for the user to create the trg file and save the 5 parametres (trend name + user name + " parametres ; workshop, installation and info type) and I am using 2 txt files, 1st as a data base for the trends 5 parametres and a 2nd one as a log for a scipt included in a button that looks in the data base for 3 parametres inputs by the user in the RT window.

NB : Photos attached

If needed i can include the 2 scripts (add new trend group and look for trend group from selected parametres)

Oreca

 Hi user-with-a-long-name,

The trends itself are saved under the TRG folder of the project on the local PC station. Before v7.1, the trends were saved as .TRG files which is basically a text file. Since then, the trends are saved as .TRC files, which is an XML format.  

When you open the WinCC OnlineTrendControl Properties and go to tab: "Online configuration", you can see a few settings.

Do not retain: Means the changes are not saved and are gone at the next picture change

Retain during runtime: Means the configuration is changed only in runtime. When you exit runtime, the settings are lost.

Retain permanently: Means the configuration is saved permanently. Also when a restart is executed.

U_926de809-dfa8-459d-8bbb-88a69ca5d957

In older version of pcs 7 de setting of a trend where saved in de gracs folder at the server. in pcs 7 version 8.1. i would to know where the setting or properties are saved of a trend.

The operator can change the properties during his or her shift. if the engineer want to use the Original properties the saved version of the trend with the origal properties can used overwrite the properties of the trend of the operator.

 

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Split from save trend properties.