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Web brick temperature sensors

Last post 09-21-2007 12:42 AM by simon.edgley. 2 replies.
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  • 09-07-2007 2:23 PM In reply to

    Web brick temperature sensors

    I am having some problems getting more temperature sensors connected to my web brick. I have found that two of my temp sensors both seem to be configured on the same input. If I connect one of the sensors then it works but when I connect them both they don't work.

     Is there some way to reset the sensors so that I can start putting them in from scratch?

  • 09-10-2007 8:28 AM In reply to

    • john.guyatt
    • Top 10 Contributor
    • Joined on 07-06-2007
    • Kingsclere, Hampshire, UK
    • Posts 49

    Re: Web brick temperature sensors

     Have you looked in the WebBrick WB10B64 Manual which describes how you use temperature sensors?

    To get temperature sensors displayed in your preferred order then connect them one at a time.  So the first
    temperature sensor getting tagged will be displayed in the 1st row and the tagged temperature sensor will be
    displayed in the following row and so on.  After connecting a temperature sensor, manually
    issue the 'RT' command and wait for each it to register before adding the next sensor.

    The WebBrick has a command interface that accepts command strings, these can be gen-
    erated by the Web interface and can also be sent to the WebBrick over the network. For
    network delivery the commands can be sent using an HTTP URL with the command en-
    coded in the parameters or a UDP transmission, the HTTP use is preferable as you get an
    indication of whether the command was received at the WebBrick.

    The RT Command scans the one wire bus for new sensors.

    Issuing the 'RT' command - 

    All commands start with a 2 character identifier, and are followed by any required pa-
    rameters and terminated by a colon (':') character after the parameters, which means
    end-command, each parameter to a command is terminated by a semi-colon (;). in this
    document items in <is a user parameter> and should be replaced with real world values.
    Generally the first character within the 2 character identifier identifies the command group
    and the second identifies the entity type. No extra blank spaces should be inserted into
    the command as unexpected things may happen or the command will be rejected.
    These commands can be sent to the WebBrick By encoding the parameters into an HTTP
    URL and accessing that URL.

    HTTP URL to be used is http://<ip Address>/cfg.spi?com=<commandString>
    Where <ip address> is the WebBricks IP address or host name. and <commandString> is
    one of the command strings documented here. Note some commands will need you logged
    in for them to be processed.

    So a typical RT command could be - 'http://10.100.100.100/cfg.spi?com=RT'


    Try this out and let us know if this registers the temperature sensors in proper order.
     

  • 09-21-2007 12:42 AM In reply to

    Re: Web brick temperature sensors

    This problem can also be that they are not wired correctly. Temp sensors need a length of Cat5e connected to the brick, and then the sensor spur off of it.
    If it ain't broke, fix it until it is

    (advice from me is just that, advice)
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