little consideration for LEDs. It replaced the simple, one-way, broadcast-like operation of existing 0/1 to 10 volt analog control approaches. The standard also includes a broadcast option, and, with a simple reconfiguration, each DALI device can be assigned a separate address allowing digital control of individual devices . In addition, DALI
devices can also be programmed to operate in groups so the lighting systems can be reconfigured by software, thereby avoiding the need to change the wiring. The growth of user expectations along with improvements in LED technology has encouraged the development of what is now the DALI-2 standard. DALI-2 is more than an industry standard—it
DALI standard redefines lighting connectivity DALI is a dedicated protocol for digital lighting control that enables the easy installation of robust, scalable and flexible lighting networks (Figure 3). The first version, DALI-1, was better suited to digital control, configuration, and querying of fluorescent ballasts with
Figure 3: The first version of the DALI standard defined a control base that linked all items being powered by the parallel main AC power wires. (Image source: Omnialed)
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