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Thread: From Engine to Caboose, What's in the train?
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face BY : Dennis Plunkett email (remove spam text)



At 17:20 12/10/99 +0100, you wrote:
>The first problem I see is what happens when one wagon gets coupled up the
>opposite way round to what it is used to. this is solved by having the
PICs in
>the cars listen on both sides, and the first side which sees a
communication is
>the one towards the master end. transfer query message to other side, and
when
>message comes back through, add my own ID on the end.
>
>This also assumes that there will also be a caboose on the end to act as
end of
>train marker.  I would have a timeout so that if an echo from the caboose end
>did not happen within a timescale of (say) 5 message transit times for the
>longest train, then send urgent message to master end (here I assume loco)
that
>the train is broken, and the Westinghouse brakes should go into failsafe
mode!
>
>


The brake will be in failsafe mode as there will be no backpressure, lost
of sparks on the wheels of the trailing carriges! <G> (Kids love doing this
too)


Dennis

<3.0.32.19991013093847.006eb5c0@huey>

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Subject (change) From Engine to Caboose, What's in the train?

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