Abstract: In various embodiments, on occurrence of a power up event, at least one lighting unit of a group of lighting units may be initiated in an emergency state in which the at least one lighting unit emits light having a fixed lighting property. A presence signal may be detected from one or more presence sensors associated with the group of lighting units. In response to detection of the presence signal, the at least one lighting unit may be transitioned from the emergency state to an occupancy lighting operational state in which the at least one lighting unit is selectively energized responsive to one or more presence signals from the one or more presence sensors.

Abstract: In various embodiments an apparatus configured to be connected to a lighting network and to control a first and a second lighting unit in response to at least one signal received via the lighting network is disclosed. In one example, the apparatus comprises a processor configured to receive an identification command, and in response thereto to execute an algorithm for communicating a network address associated with the apparatus, the algorithm comprising sequentially, for each bit of the network address: controlling the first lighting unit, to indicate a value of the bit by the lighting unit entering a state corresponding to the value of the bit, and causing the second lighting unit, to signal that the first lighting unit validly indicates the value of the bit and causing the second lighting unit to enter a state which indicates an end of the network address.

Abstract: In various embodiments an apparatus configured to be connected to a lighting network and to control a first and a second lighting unit in response to at least one signal received via the lighting network is disclosed. In one example, the apparatus comprises a processor configured to receive an identification command, and in response thereto to execute an algorithm for communicating a network address associated with the apparatus, the algorithm comprising sequentially, for each bit of the network address: controlling the first lighting unit, to indicate a value of the bit by the lighting unit entering a state corresponding to the value of the bit, and causing the second lighting unit, to signal that the first lighting unit validly indicates the value of the bit and causing the second lighting unit to enter a state which indicates an end of the network address.

Abstract: A method (300) is provided for an apparatus (110, 210) which controls one or more lighting units (10) and which is connected to a lighting network (100), to indicate its network address. The apparatus receives (320) an identification command. Sequentially, for each bit of the network address: the apparatus controls (330) the lighting unit(s) to indicate the value of the bit during a bit period by the lighting unit(s) entering an illumination state corresponding to the value of the bit, and causing (340) a signaling device (218) to signal during a time interval within the bit period that the illumination state of the lighting unit(s) validly indicates the value of the bit. After the values for all of the bits of the network address have been indicated by the lighting unit(s), the signaling device enters a state (360) which indicates the end of the network address.

Abstract: A method (300) is provided for an apparatus (110, 210) which controls one or more lighting units (10) and which is connected to a lighting network (100), to indicate its network address. The apparatus receives (320) an identification command. Sequentially, for each bit of the network address: the apparatus controls (330) the lighting unit(s) to indicate the value of the bit during a bit period by the lighting unit(s) entering an illumination state corresponding to the value of the bit, and causing (340) a signaling device (218) to signal during a time interval within the bit period that the illumination state of the lighting unit(s) validly indicates the value of the bit. After the values for all of the bits of the network address have been indicated by the lighting unit(s), the signaling device enters a state (360) which indicates the end of the network address.