best polling practices for z-wave devices

[paul]

Something that I've never been fully clear on - when polling z-wave devices, which child device to actually poll. For example - a light device with a root device, a central scene device and a switch device. If I want to poll the device periodically just in case the switch gets turned on but doesn't successfully notify HS, do I want to poll the root device, or switch device? i've been polling both, just to be paranoid.....

[Guest]

Something that I've never been fully clear on - when polling z-wave devices, which child device to actually poll. For example - a light device with a root device, a central scene device and a switch device. If I want to poll the device periodically just in case the switch gets turned on but doesn't successfully notify HS, do I want to poll the root device, or switch device? i've been polling both, just to be paranoid.....

If you examine your child devices, you will see that each child device has the same ZWave node id as the root device (ZWave node id is separate from the HS Device ID, and can be found on the ZWave tab).

Since you are actually polling the ZWave node id, you only need to do it once.

(I have seen some devices have multiple ZWave node id's, so check yours to see if they are different or the same.)

[paul]

Perfect, that’s what I needed to know. Makes sense in hindsight. Thanks!

[sparkman]

If you poll the root, it will report values for each child device. If you poll a child device, it will only return the value for that child. If you don’t care about the other child nodes, polling only the relevant child minimizes z-wave traffic.

[paul]

That’s also good to know. Many thanks!