Digital Addressable Lighting Interface, DALI, enabled communication device for transmitting messages over a communication bus, as well as a corresponding method

A DALI enabled communication device in accordance with any of the previous claims, wherein said predetermined threshold is between 0 Volt-6.5 Volt, preferably between 4.5 Volt-6.5 Volt.

A DALI enabled communication device in accordance with any of the previous claims, wherein said DALI enabled communication device further comprises a voltage supply line and a rectifier for connecting one of said two communication lines to said voltage supply line.

A method of transmitting messages by a Digital Addressable Lighting Interface, DALI, enabled communication device over a communication bus having two communication lines, said device comprising a switch connected between said two communication lines, a controller arranged for controlling said switch for imposing logical communication levels on said communication bus, and an energy storage device, connected in series with said switch, and arranged for storing electrical energy flowing from said bus through said switch, and a bypass circuit arranged for bypassing said energy storage device when a voltage over said energy storage device is above a predetermined voltage threshold, said method comprising the steps of:

• imposing, by said controller, a logical zero on said communication bus such that electrical energy is flowing from said bus through said switch to said energy storage device;
• bypassing, by said bypass circuit, said energy storage device when a voltage over said energy storage device is above a predetermined voltage threshold.