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Thread: Temperature sensor event ports?

  1. #11
    Automated Home Legend Karam's Avatar
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    Mar 2005
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    Andrew,

    The 'State ...' connection is somewhat unintuitive. In your example the going below threshold will trigger a signal from the threshold object when the temperature goes below the threshold, however what is actually going into the gate is the threshold 'state' which here is defined as 1 if above threshold and 0 if below. So, as you say, even though the threshold going below is 'true' the state value is '0'. The threshold therefore creates the trigger but does not transmit a '1'. So to get what you want you will have to put a NOT gate between the State output connection and the input of your AND gate.

    On the other hand what Jon suggested can also be made to work by connecting the output of the HVAC to a virtual boiler object (implemented by a non network enabled relay containing object for example). Then you can use the output connections from the virtual boiler to drive the IR button controlling the fire. It may be possible to use verification to deal with synchronisation lapses but I don't know which signals you might be able to use for this and whether these give a good enough indication.

  2. #12
    Automated Home Ninja Andrew Millne's Avatar
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    Nov 2007
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    Quote Originally Posted by Karam View Post
    Andrew,
    So to get what you want you will have to put a NOT gate between the State output connection and the input of your AND gate.
    Thanks Karam, all working now after chaining a NOT gate.

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