English
The DALI protocol is designed for connecting lighting devices in accordance with the specification NEMA Standards Publication 243-2004 Digital Addressable Lighting Interface (DALI) Control Devices Protocol PART 1-2004 a PART 2-2004.
The communication of the DALI bus runs in series via a special synchronous protocol in two wires.
Up to 64 “slave” ballasts for lights can be connected to the bus.
The participants are addressed using the so-called short addresses in the range of 0...63, or group addresses 0..15 (the library for distinguishing group addresses uses numbers in the range of 100...115), or by accessing “broadcast addressing” (global address 255), which means to all "slave" devices simultaneously.
To control DALI ballasts, there are two modules:
For up to 12 ballasts there is the small built-in module C-DL-0012S,
for larger installations with up to 64 ballasts, the C-DL-0064M module.
The DSI protocol was designed by TRIDONIC in 1991 to control lighting ballasts. It was basically a predecessor of DALI interface.
The protocol uses a single value of lighting, which is passed by the bus to all the connected ballasts. It means that all the converters connected to one DSI interface are controlled together, and they have the same level of brightness. The communication receives no feedback on the state of the ballasts, and the number of ballasts on one DSI interface is not strictly limited.
For detailed information on programming and operating the modules C-DL-0012S and C-DL-0064M see the documentation of TXV 003 66.01.