changed to call netCheck once an hours (at 21 past the hour) instead of at every outlet change.
A netCheck call will test if the network is still active and if not will reset the network connection.
A netCheck call takes 2ms, so I figure once an hour is sufficient.
I had a hardware issue bebore where the controller was dropping out of the network everythime the relays switch.
That problem is now fixed by adding an MOV across each outlet, hence there is no need to call netCheck after every outlet switch.