Introduction The bus coupling unit (BCU) is the standard bus interface for KNX/EIB bus devices. Due to its universal usage the BCU may contain the application program or just serves as a bus interface. Concerning the reconfiguration of the BCU, it can be programmed as well via the bus as via the PEI. The BCU 2 is more powerful than the BCU 1. It has more EEPROM, more RAM and a lot of additional features. This help file is a detailed description of the BCU 2. The common characteristics of KNX/EIB are described in the KNX Specification which can be obtained from the Konnex Association, Brussels. The BCU2 is available in several mechanical shapes (e.g. for flush mounting, surface mounting, etc.) as well as a module called BIM M113. This is a short overview of the BCU 2 technical characteristics:

Bcu2Help_v12.chm

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