Networx data format

[jg]

Hello,

I am planning to design and build my own controller for a home alarm system
that will be programmable through a built in web server.

I want to use NX wireless sensors, and was looking at the GE NX-548E
receiver which would provide me with 48 wireless zones. Apparently the NX-
548E has a three wire (ground, +12, data) Networx compatible interface.

I am very interested in the format of the serial data that is sent and
received between the two devices.

Does anyone have the data format of this serial interface or know where I
can obtain it?

I want to be able to program and control the NX-485E with my controller.




Thanks,

Jack


PS: Please remove the xyz from the email address if you want to email me.

 

[Robert L Bass]

Does anyone have the data format of this serial interface or know where I
can obtain it?

Sorry friend, but that's not the sort of thing you're likely to find in this
newsgroup. ASA is mostly a hangout for installers who may use wireless
systems but have no reason to know their inner workings. GE is not likely to
help you either since there's nothing for them to gain in it. If you have the
ability to design the interface, the protocol should be a cinch to decypher
though. If you need help with it, one of my partners has the skills but it
won't be cheap.

--

Regards,
Robert L Bass

==============================>
Bass Home Electronics
4883 Fallcrest Circle
Sarasota · Florida · 34233
http://www.bassburglaralarms.com
Sales & Tech Support 941-925-8650
Customer Service 941-870-2310
Fax 941-870-3252
==============================>

 

[Crash Gordon]

good luck, I doubt it's open source, so while you may be able to figure it
out you also may be infringing on someone's proprietary turf.

 

[Jack]

Sorry friend, but that's not the sort of thing you're likely to find
in this newsgroup. ASA is mostly a hangout for installers who may use
wireless systems but have no reason to know their inner workings. GE
is not likely to help you either since there's nothing for them to
gain in it. If you have the ability to design the interface, the
protocol should be a cinch to decypher though. If you need help with
it, one of my partners has the skills but it won't be cheap.

Robert,
Thanks for the info. Fortunately I do have the ability to decode the
interface but I thought I would ask first to save some time.


Regards,

Jack

 

[Robert L Bass]

good luck, I doubt it's open source, so while you may be able to figure it
out you also may be infringing on someone's proprietary turf.

I'm sure you're right that it's not open source. However, the protocol he's
seeking likely isn't copyright protected. He wants to know what values are
sent to denote things like "Sensor Open" or "Transmitter Tamper". GE has
already shared this information with at least one competing manufacturer, ELK
Products. ELK uses GE wireless receivers as well as their own brand.

The OP's idea is interesting, though for a one-up I doubt it will be worth the
investment of time and money to develop it. There are simpler and more
reliable ways to build a PC-centric system as the gentleman envisions. For
example, both ELK Products and Napco make robust systems with real-time PC
interfaces to allow end users to customize their home automation and security
systems.

Sometimes DIYers will take on projects like this just because they enjoy the
challenge. One of my clients bought a Napco Gemini P9600 and serial adapter
from me some years ago. I got him a copy of the Napco protocol along with the
interface. He developed a home automation software system which you may have
heard of called HomeSeer. The original app only supported Napco but the
current versions work with a wide assortment of security and home automation
systems.

--

Regards,
Robert L Bass

==============================>
Bass Home Electronics
4883 Fallcrest Circle
Sarasota · Florida · 34233
http://www.bassburglaralarms.com
Sales & Tech Support 941-925-8650
Customer Service 941-870-2310
Fax 941-870-3252
==============================>

 

[Robert L Bass]

Robert,
Thanks for the info. Fortunately I do have the ability to decode the
interface but I thought I would ask first to save some time.

Sure thing. If you haven't completely set your sights on Caddx, you might
want to consider ELK Products. I haven't asked about your specific question,
but they're far more consumer and developer friendly than GE. If your project
interests them you might get support from their engineers. I've worked with
them for many years. They're among the best around.

--

Regards,
Robert L Bass

==============================>
Bass Home Electronics
4883 Fallcrest Circle
Sarasota · Florida · 34233
http://www.bassburglaralarms.com
Sales & Tech Support 941-925-8650
Customer Service 941-870-2310
Fax 941-870-3252
==============================>

 

[Jim]

Sometimes DIYers will take on projects like this just because they enjoy the
challenge. �One of my clients bought a Napco Gemini P9600 and serial adapter
from me some years ago. �I got him a copy of the Napco protocol along with the
interface. �He developed a home automation software system which you may have
heard of called HomeSeer. �The original app only supported Napco but the
current versions work with a wide assortment of security and home automation
systems.

You're such a fucking liar.

Jeeeeeze!

It's a wonder the alarm industry will be able to survive after you're
dead.