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Networx data format

Discussion in 'Security Alarms' started by jg, May 14, 2008.

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  1. jg

    jg Guest

    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.
     
  2. 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
    ==============================>
     
  3. Crash Gordon

    Crash Gordon Guest

    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.
     
  4. Jack

    Jack Guest

    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
     
  5. 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
    ==============================>
     
  6. 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
    ==============================>
     
  7. Jim

    Jim Guest

    You're such a fucking liar.

    Jeeeeeze!

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