Owner’s Manual for Power Zone Pro Sync 21
General Information
* In a system where there is a Display, the Display must
be connected to port 1, and it must be the only thing
connected to port 1. In an MPS where there are other
Main Controllers, they must be connected to ports 2 or
3, either directly or through a non-powered Ethernet
switch. When there are no more Main Controllers
remaining to connect, any other module may connect to
ports 2, 3, or 4.
Table 2-3. Main Controller Ethernet Port
Connections
Port 1 Display*
Ports 2 and 3 Main Controller(s)*
Port 4 Anything