BatiBus

In building automation, BatiBus is a specific fieldbus (industrial communication system) that was introduced in 1989 and has not been marketed since the 2000s. Its successor is KNX .

The system was supported by the BatiBus Club International (BCI), which was founded by the Swiss company Landis & Gyr and the French companies AIRELEC, Électricité de France and Merlin Gerin . A total of around 500,000 BatiBus network nodes were installed primarily in France, but also in other European countries .

BatiBus communicates over twisted pair cables and arbitrary topologies that can be divided into several segments. Each segment has a power supply unit that feeds 15 volts and up to 150 milliamps to supply the network nodes. Each node is configured with one of 240 possible numerical addresses under which it can be reached. In addition, 16 group addresses can be configured under which all nodes of a group can be reached. The nodes avoid data collisions using CSMA / CA and carry out data flow controls . The maximum data transfer rate is 4800  bit / s .