Group 256 (FF)

Discussion in 'General Discussion' started by Dave Byron, Aug 30, 2005.

  1. Dave Byron

    Dave Byron

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    On a site today with a non clipsal device connected to the system and group 256 was used. When was toggled it turns on ALL groups which cause some unplanned actions.
    I thought at the SI meet someone from clipsal said it was impossible.



    dave
     
    Dave Byron, Aug 30, 2005
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  2. Dave Byron

    Newman

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    The "impossible" bit was probably related to the fact that C-Bus Input Units don't transmit C-Bus messages when they are assigned to the Unused Group Address, i.e. $FF or 255. They will still respond if they receive such a message however.

    The Unused Group Address is what the Area Address is set to by default. What you would have been seeing is all C-Bus devices that have the Area Addressing set to "Unused" would be turning their groups On.
     
    Newman, Aug 30, 2005
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  3. Dave Byron

    Dave Byron

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    your right - might have to a use a dummy group no as area address so the creston guys use my dummy it will do nothing




    dave
     
    Dave Byron, Aug 30, 2005
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  4. Dave Byron

    Richo

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    Using group $FF is not recommend and violates the design of the lighting application. This could have unwanted side effects in other C-Bus units beside the behaviour you have already observed.
     
    Richo, Aug 30, 2005
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