RE: xAP - The Proposed Architecture Explained...

["BUTLER, Tony, FM" <roaming@xxxxxxx>]

Okay thanks.  It was the daiy chain/star wiring bit I was interested
in.  
Seems a bit like SCSI - card somewhere on the cable, termination at
both
ends.....

Tony

> -----Original Message-----
> From: ian.bird@xxxxxxx
> [mailto:ian.bird@xxxxxxx]
> Sent: 15 August 2002 09:54
> To: ukha_d@xxxxxxx
> Subject: RE: [ukha_d] xAP - The Proposed Architecture Explained...
> 
> 
> Not quite as the controller does not have to be at one end, 
> anywhere is
> fine.
> 
> This applies to RS485 as I know a bit about this. Other 
> topologies maybe
> different.
> 
> Ian
> 
> Ciba Vision (UK) Ltd
> Tel:+44(0)1489 775570
> Fax:+44(0)1489 779570
> E mail: ian.bird@xxxxxxx
> 
> 
> > -----Original Message-----
> > From: BUTLER, Tony, FM [mailto:roaming@xxxxxxx]
> > Sent: 15 August 2002 09:57
> > To: 'ukha_d@xxxxxxx'
> > Subject: RE: [ukha_d] xAP - The Proposed Architecture
Explained...
> > 
> > 
> > Thanks Ian,
> > 
> > So the answer is actually "yes the displays _are_ connected
> > in a daisy chain
> > to the controller"!
> > 
> > Tony
> > (Satisfied)
> > 
> > > -----Original Message-----
> > > From: ian.bird@xxxxxxx
> > > [mailto:ian.bird@xxxxxxx]
> > > Sent: 15 August 2002 09:36
> > > To: ukha_d@xxxxxxx
> > > Subject: RE: [ukha_d] xAP - The Proposed Architecture
Explained...
> > > 
> > > 
> > > Hi Tony
> > > 
> > > In an RS485 network the term multidrop and daisy chain go
> > > hand in hand.
> > > Think of a single piece of two strand cable running round
the 
> > > various rooms
> > > of the house. When you want to add a device to it you 
> just crimp the
> > > connections to the main wires. Note there are no T junctions
> > > and as small as
> > > possible a neck to the device. Add on loads of devices and
> > > you have multi
> > > drop. The devices at each end have termination resistors on
> > > to stop signal
> > > reflections but that is getting techy.
> > > 
> > > HTH
> > > 
> > > Ian
> > > 
> > > Ciba Vision (UK) Ltd
> > > Tel:+44(0)1489 775570
> > > Fax:+44(0)1489 779570
> > > E mail: ian.bird@xxxxxxx
> > > 
> > > 
> > > > -----Original Message-----
> > > > From: BUTLER, Tony, FM [mailto:roaming@xxxxxxx]
> > > > Sent: 15 August 2002 08:24
> > > > To: 'ukha_d@xxxxxxx'
> > > > Subject: RE: [ukha_d] xAP - The Proposed Architecture
> Explained...
> > > > 
> > > > 
> > > > > > So the displays are connected in a daisy
chain to the 
> > > controller?
> > > > > 
> > > > > No multi drop
> > > > 
> > > > Sorry for being thick here - could you explain multi
drop to me?
> > > > The only contect I have seen it used in before is in
> > > relation to KAT5
> > > > modules and a "multidrop" installation there
_is_ 
> > > > daisy-chained, 10base-T
> > > > style......
> > > > 
> > > > thanks,
> > > > 
> > > > 
> > > > Tony
> > > > 
> > > > 
> > > > 
> >
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