| 摘要 |
In a lighting device, a primary control unit (103) and a group of light units (107) are arranged in a power supply chain, each light unit (107) of said group being arranged for receiving commands from the primary control unit (103) via a light unit interface (117) of the light unit (107), wherein each succeeding unit (103; 107) of the chain has a power input (145) which is connected to a switchable power output (147) of a respective preceding unit (103; 107), each preceding unit (103; 107) being arranged to supply power at the power output (147) only after initializing an address identification of the unit, and each succeeding unit (103; 107) being arranged to initialize an address identification of the unit upon being supplied with power at the power input (145).
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