I have this church with CSI controller 7793. Its LAN has problem when we extend to the buildings they just purchased. And we used the B channel. This LAN is running under the metal walk-way about 300ft.
I checked every node of the controllers on this channel B per specification as of channel A.
Problem: Once and a while when lightening storm, one of the controller will crashed and corrupted the whole LAN on B channel. The church has electrician installed surge protector at the main power and it helped the computers throughout the church BUT this controller LAN.
I read that there are protector against LAN line running between buildings in the Kele catalog. I wonder you guys have any inputs.
Thanks in advance