Gira DALI Gateway Product Documentation page 30

"DALI Gateway C00CX2 EN / C00CX4 EN" software
Functional description
The DALI Gateway acts as the central control component (master-controller) in the system that also
ensures the power supply of the DALI interface. The DALI devices, e.g. DALI electronic ballast,
function as slaves that transmit back the states or status reports to the master only upon request. It is
the function of the DALI Gateway only to transmit control commands received by the KNX/EIB to the
DALI line as well as to control the devices. Further DALI control components in multi-master mode, e.g.
an additional DALI center, a DALI potentiometer or power switching pushbuttons, are unnecessary and
can lead in some individual cases to malfunction in the DALI system. Therefore, it is necessary to
remove other control components from the system – especially when refitting existing DALI systems.
The DALI system is then entirely controlled by components of the KNX/EIB (cf. figure 6).
Figure 6: Schematic diagram of a KNX/EIB-DALI system interconnection
(example: DALI electronic ballast in different groups)
Best. Nr. 1060 00 Page 30 of 136