[solved] Most efficient way to get sum of all light states?

[Thomas]

Hi
In my project I have > 500 bulbs. My experience is the better way is to use two layers in these calculations. First layer (aka kitchen, bedroom) where every room contains less than 10 lights is calculated in per event based scripts. The second layer is calculated just from the first layer's results as a resident task.

I use DALI gateways. I experimented with DALI cumulative feedback but the result was unreliable. The reason was DALI sends not one but few other cumulative feedback according to DALI program and DALI bus state. And from time to time it happened on KNX bus the first telegram outran the second telegram.