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rs 485 multi-drop, multi-protocol advice

Discussion in 'General Electronics' started by David Fussell, Oct 7, 2003.

  1. Hi,

    I'm looking at an application that requires a few different devices to
    share an RS485 connection. The problem (as I see it) is that each
    device has it's own protocol, which I would regard as something of a
    showstopper, since if it's going to work, I have to analyse each
    devices protocols to ensure that (in spite of each device being
    addressable) no inadvertent addressing of the wrong device can occur.

    I'm tempted to say it can't be done without a common protocol, but I'd
    be interested in any comments, either confirming contradicting my
    reluctance.

    Thanks!

    David
     
  2. Tom Woodrow

    Tom Woodrow Guest

    David,

    Best keep your protocols seperated, especially if you are using any
    binaty data that can take on avy value that might be considered an address.

    Tom Woodrow
    www.dacworks.com
     
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