The Desigo modules can communicate by the BACnet/IP and BACnet/LON protocols.
The Desigo modules can communicate by the Lonworks protocol.
It is possible to insert some extension modules into the Desigo modules (e.g. the PXA30-RS module), that allow to communicate by the Modbus or M-BUS protocols. For these protocols, the PROMOTIC sstem has its own drivers. See: