Hi Elvio,

There is not really any specific training for virtual connectors, no. However, there is also no specific knowledge to share about those. Basically, all the generic knowledge about protocols applies and all the specifics knowledge about specific connection types doesn't.

Now as mentioned by Jorge, you can indeed make sure a QAction get executed periodically using following flow:
Timer > Group (type poll action) > Action (on parameter, type run actions) > Parameter (type dummy) > QAction

Once this is done, in order to make calls to other elements, I would recommend to use our Core DataMinerSystem NuGet package available on the official NuGet store. Here is more info about it: Class library introduction | DataMiner Docs.

Hope this helps.
Regards,