Re: Re: EXCLUSIVE - New WebBrick Launched

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

Hi Paul
I have heard of Programmers using State Machines for programming
plc,s for machines...
I have been told its a good way to program as its suppose to be easier to
fault find on ....

Frank


----- Original Message -----
From: "Paul Gale" <groups@xxxxxxx>
To: <ukha_d@xxxxxxx>
Sent: Tuesday, January 25, 2005 10:57 PM
Subject: RE: [ukha_d] Re: EXCLUSIVE - New WebBrick Launched


>
> Yes please - I'm a bit clueless too ;)
>
> Paul.
>
>
>
> -----Original Message-----
> From: Frank Mc Alinden [mailto:fmcalind@xxxxxxx]
> Sent: 25 January 2005 11:44
> To: ukha_d@xxxxxxx
> Subject: Re: [ukha_d] Re: EXCLUSIVE - New WebBrick Launched
>
>
> Hi David
>
> >If what you want to do fits within the capabilities of the onboard
> >state machine, the WebBrick looks a great autonomous solution
>
> Can you explain what a state machine is and what it can do please ???
> Thanks
> Frank
>
>
> ----- Original Message -----
> From: "David Buckley" <db@xxxxxxx>
> To: <ukha_d@xxxxxxx>
> Sent: Tuesday, January 25, 2005 10:37 PM
> Subject: [ukha_d] Re: EXCLUSIVE - New WebBrick Launched
>
>
> >
> >
> > --- In ukha_d@xxxxxxx, "Paul Gale" <groups@s...>
wrote:
> > > It does include a lot of I/O for the price.
> > >
> > > The only unknown for me so far is the software side of
things -
> > > how easy is it to create complex applications I wonder?
> >
> > I've blimped the documentation, and it does have an interesting
> > collection of I/O, but as an I/O device the Phaedrus Netiom (a
> > networked version of the VIOM so familiar hereabouts) has 16 digi
in,
> > 4 analog in and 16 digi out (upgradable to relay out using the
same
> > relay boards as the VIOM) plus a network driven slave RS232 port
for
> > 69UKP plus VAT.  What you lose on the Netiom is the (1-wire)
> > temperature sensor input, rotary encoder input, analogue outs,
and
> > most importantly, the local intelligence state machine.
> >
> > That is the big difference - the WebBrick has local intelligence
> > capability as well as network control.  It is an autonomous
> > controller.  The Netiom uses a PIC for everything, the WebBrick
uses a
> > PIC for I/O and processing, and a SitePlayer telnet unit for
network
> > comms.
> >
> > If what you want to do fits within the capabilities of the
onboard
> > state machine, the WebBrick looks a great autonomous solution. 
If
> > not, then you either have to share the logic between the onboard
state
> > machine and something external on (generally) a PC, or do all the
> > logic on a PC.  If you get as far as doing it all on the PC (in
for a
> > penny, in for a pound, only one set of code to maintain) then as
a
> > pure I/O device its a bit expensive.  If what you need is clever
> > processing on a PC, but simple backstop autonomous processing to
save
> > your butt (or your house, or your fish, or your electricity bill)
when
> > the PC crashes, the WebBrick may be close to the perfect
solution.
> > Thats the role I see it best in.
> >
> > Another very interesting HA option.  Yay.
> >
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> > Yahoo! Groups Links
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