Hi Mark, nathand and Rolf,
thanks for all notes.
As suggested, I'm implementing a periodically PING test from the RT controller to the supervisor.
For the PING on real-time OS, I'm using the solution implemented by BlueCheese:
http://forums.ni.com/t5/LabVIEW/How-to-Ping-a-network-device-from-RT-controller/td-p/1535420
As general consideration, I suggest and ask to you to post a "LabVIEW Idea Exchange" to add advanced TCP VIs, on real-time OS, to configure both the Nagle Algorithm and the length of the write stack.
Regards,
Asper
