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Home > Archive > Home Automation > August 2007 > Zwave does not broadcast status messages
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Zwave does not broadcast status messages
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| meir410@gmail.com 2007-08-01, 1:25 pm |
| >From the ELK-M1XZW Z-wave interface module:
"Based on the current generation Z-Wave protocol, Z-Wave Transceivers
(Devices) cannot broadcast or send status update changes back to any
handheld or automation controller with the exception of a confirmation
reply to a controller that just issued a command to change. Equally
important, if a device (light switch, etc.) is manually operated it
does not broadcast any status change at all. The obvious issues are
that automation interfaces such as the Elk-M1XZW, including Elk
Keypads, and Elk's Virtual Keypad software cannot remain in sync with
the true state of Z-Wave devices if their state is not broadcast or
available. This is not unique to Elk. Other manufacturers of ZWave
controllers face the same dilemma. One might think that a periodic
polling command for status would provide a solution. However, the poll
intervals and the potential detrimental loading effect on the radio
network is uncertain. Even with polling, there would still be a time
lag during which displayed status would be out of sync. It is hoped
that Z-Wave will some day add Status Broadcast to their protocol."
I haven't seen any discussion about this on the boards. Does anyone
know if this will change soon?
Thanks
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| Robert L Bass 2007-08-02, 3:25 am |
| > I haven't seen any discussion about this on the
> boards. Does anyone know if this will change
> soon?
It already has. Intermatic says it's InTouch server
provides 2-way, real-time status of every device in
the network including legacy Z-wave devices. One
of the things I like about dealing with ELK is they
actually respond to requests for product
enhancements. "Ask and ye shall receive," sayeth
Wade Moose.
--
Regards,
Robert L Bass
=============================>
Bass Home Electronics
941-925-8650
4883 Fallcrest Circle
Sarasota · Florida · 34233
http://www.bassburglaralarms.com
=============================>
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| meir410@gmail.com 2007-08-02, 1:25 pm |
| Does the Intermatic server interface with the Elk serial interface?
Can you explain what parts are involved?
Thanks
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| Dave Houston 2007-08-02, 1:25 pm |
| You'll get more (but maybe not better) responses in the
comp.home.automation group. This group has little activity.
meir410@gmail.com wrote:
>Does the Intermatic server interface with the Elk serial interface?
>Can you explain what parts are involved?
>
>Thanks
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| Robert L Bass 2007-08-02, 9:25 pm |
| > Does the Intermatic server interface with the Elk
> serial interface? Can you explain what parts are
> involved?
I haven't checked on that yet. I can ask about it ELK
tomorrow if you like. If they don't now, I'm sure they
can. Also, if the Intermatic "InTouch" server can
send/receive standard ASCII it should be easy to
roll your own for the ELK system.
--
Regards,
Robert L Bass
=============================>
Bass Home Electronics
941-925-8650
4883 Fallcrest Circle
Sarasota · Florida · 34233
http://www.bassburglaralarms.com
=============================>
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