Starting with Metasys Release 9.0, it is possible to create a network for building automation that is based on Ethernet. Starting with Release 10.0, such a system includes IP controllers with redundant network connections that can support a Media Redundancy Protocol (MRP) enabled ring.
In an IP-based building automation system, Internet Protocol is the networking technology that connects the site manager, network engines , and controllers. If all controllers in a Metasys network are IP controllers, MS/TP networking persists only in the SA bus.