Re: Re: EXCLUSIVE - New WebBrick Launched

["Frank Mc Alinden" <fmcalind@xxxxxxxxxxxxxx>]

Hi David
So they state (pardon the pun) that the device has 8 state
machines ??? does that mean it has one for each input...............or
there
are 8 states (steps)...??
I recall using Telemecanque Grafcet which works like what you
mention.....state 0 = do this and that......condition switch x opens allows
it to go to state 1 etc ...????

Thanks
Frank

PS......Must be getting late in NZ .....11.00PM in Oz


----- Original Message -----
From: "David Buckley" <db@xxxxxxx>
To: <ukha_d@xxxxxxx>
Sent: Tuesday, January 25, 2005 11:08 PM
Subject: [ukha_d] Re: EXCLUSIVE - New WebBrick Launched


>
>
> --- In ukha_d@xxxxxxx, "Frank Mc Alinden"
<fmcalind@b...> wrote:
> Hi Frank
> >
> > Can you explain what a state machine is and what it can do
> > please ???
>
> The WebBrick docs descriobe its control system as a state engine.
>
> A state machine is a logic system that can only be in one of a finite
> number of states, with defined triggers that move the thing from one
> state to another.
>
> Its all probably a bit excessive in terms of this discussion, how it
> works under the covers is not necessary to understand how to use it,
> it is similar in concept to CBus logic.
>
> A quick look at the WebBrick screenshot gives a good flavour of what
> it can do, if I've guessed it right.  Basically, when a trigger event
> happens, which could for example be a digital (button press), analogue
> (above a threshold, and/or below a threshold) or remote (incoming
> network packet) occurs, a defined output action is taken.  The action
> include switching a digital output on or off, or on for a while
> ("dwell") or even sending network notification to another
control
> system or WebBrick.
>
>
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>
> Yahoo! Groups Links
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