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2.5.2 <strong>DALI</strong> topology<br />
The <strong>DALI</strong> ECGs are wired in parallel to each other and groups are not<br />
taken into consideration. Star configurations are also possible. Ring<br />
wiring is not permitted (indicated by X in the diagram). There is also no<br />
need for terminating resistors on the communication cable.<br />
Figure 8: <strong>DALI</strong> topology<br />
2.5.3 <strong>DALI</strong> parameters in the ECG<br />
The following data can be stored in the <strong>DALI</strong> ECGs when a <strong>DALI</strong><br />
system is started up:<br />
• Group assignment of the <strong>DALI</strong> ECG (max. 16 groups, multiple<br />
assignment is possible)<br />
• Individual address for accessing each ECG directly (max. 64)<br />
• Lighting values for the individual scenes (max. 16)<br />
• ECG parameters that determine the behavior of the ECG:<br />
• Dimming rate<br />
• Behavior if the voltage fails on the interface (System Failure Level)<br />
• Behavior when the mains voltage is restored (Power On Level)<br />
In addition to the above-mentioned options, it is always possible to<br />
address all the devices together, even without programming the devices<br />
beforehand (construction site function).<br />
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