This simple example has two parts: client (VCSocketConnectivityClient) and server (Plugin.Socket). The server dll (Plugin.Socket) is placed in VC application folder.
Thx. Just what i needed as a start point.
I got at lot of the concepts about how to make a thread running the communication. Almost done merging it with some Snap7 magic. Thx again
.NET plugins (.dll file) should be placed in the installation folder in program files. The default file path is something like C:\Program Files\Visual Components\Visual Components VERSION\