Software interface for 500 data points for data exchange between a LITECOM system and the building management system using the official BACnet network protocol. (Building Automation and Control Networks Standards) Extract of data points: Operate the system: Set the brightness of the artificial light, set the position and slat angle of the blinds, set the position of the windows, call up the mood Display status: Brightness setting of the lighting, position/slat angle of the blinds, position of the windows, current mood LM-4WZS: Rain, outside temperature, wind direction, wind speed, device errors, fault messages, presence messages Emergency light function: Trigger function test in LITECOM, trigger operating time test in LITECOM, report emergency light error as a total error.