AN1756

DALI standard

7/10

Figure 6.

DALI standard frame

Only the ST7DALIF2 microcontroller has a dedicated peripheral for handling the DALI

protocol! For more details, please refer to document 4 referenced in Section 4.

3.3

DALI system advantages

Figure 7.

DALI cable

Here are the main advantages of the DALI system:

●

Simple wiring: all of the units in the system are interconnected using a simple five-core

cable (see Figure 7).

●

No mains switching required: lamps can be dimmed or switched on and off using

control system commands without any need for mains switching.

●

Easy system re-configuration: the operation of the system can be changed quickly

without any modification to the hardware.

●

Easy system modification: if the lighting system needs to be enlarged, new

components can be added anywhere on the DALI cable.

●

It is possible to define light scenes. Scene means: a particular light level intensity. A

maximum of 16 scenes can be defined.

Please refer to document 3 in Section 4 to find out more details of what are the other

benefits of the DALI standard for the end user and for specifiers and architects.