DALI features with a two-way communication with the light. The DALI protocol has been expanded several times since the beginning and each new device has been given a new number (Device Type X = DTX). Latest important updates are Emergency light (DT1), LED (DT6) and RGB/Tunable white control (DT8).
DT6 driver is single address, single channel. This type driver use one address to dim the color temperature and another address to dim the intensity. DALI 102 and 207 protocols.
DT8 drivers, single address multipath channels. Those drivers use one address to achieve tunable white application. It’s compatible with DT6. DALI 209 Protocol