chapter  3
The Bems Central Station
Pages 42

The central station, sometimes known as the supervisor or slightly confusingly as the central processing unit (CPU), is the heart of the BEMS and the main communication channel for the operator. It contains the user software and the main storage of data relating to the plant and buildings controlled. In older BEMSs, originating around the late 1970s and early 1980s, the central station was a minicomputer floor model, with the electronics chassis robustly encased, standing upright on the floor and integral with the operator’s desk, similar to the current workstations or supermicros but much less powerful. With the advances in chip technology, the central station in most BEMSs is now a standard Pentium-type PC.