The HMA Concept 800 is using the new ABB AC800M Process Controller together with the ABB S800 I/O system. The AC800 is modular and scalable in order to fit into any system, from smaller systems containing a few hundred signals to larger systems with several thousands of signals. The controller is using a redundant IP network with communication up to the HMA OS 800 Operator Station. Profibus is used for I/O communication. The AC800 also supports most common used protocols. For more information .