Lighting Control Response Times (Elk -> ISY or ISY -> ELK)

[cam]

I own an Elk M1 and the ISY994izw.  I purchased the Elk module for ISY and I've exported my lighting to the Elk.  I recently purchased a home and I'm connecting all my motion sensors and automating my lighting.  Initially I was planning to put all the logic in the ISY but I'm now wondering which system is better for triggering the "turn light on" event.  Should that rule belong in the Elk or the ISY assuming I want the fastest response time?

 

Both work but I'd like the fastest response time and perhaps I'm bias but it seems having the Elk trigger the light on seems a little faster but I really haven't tested my theory more than a few times.

[upstatemike]

I couldn't find a way to retrigger the timer to keep the light on as long as there is motion when the logic was in the Elk so I did it all in ISY. Response time was the same in both configurations when I was testing which way to go.

[DennisC]

I find programming for things like lighting and temperature much more convenient and easier in the ISY. Having said that, anything that is critical, like water valve, garage door opening, ect, I handle with my Elk and then set phantom outputs if required in my ISY.

 

Dennis