You are correct, of course.  You shouldn't be using a non-realtime OS (windows,
in this case) to control a realtime system.

Ideally you would use a realtime controller to go between the windows computer
and the network to handle those issues.  ie, a realtime <---> non-realtime
interface.

-Adam

Bob Ammerman wrote:
>
> Your turn around delay is 1 character, plus whatever delays are introduced
> by the most-certainly-nowhere-like-realtime Windoze before dispatching your
> program.
>
> Bob Ammerman
> RAm Systems
> (contract development of high performance, high function, low-level
> software)
>
> ----- Original Message -----
> From: Alan B. Pearce <A.B.Pearce@RL.AC.UK>
> To: <PICLIST@MITVMA.MIT.EDU>
> Sent: Monday, August 21, 2000 9:28 AM
> Subject: Re: [PIC]: Commx with half duplex RS485
>
> > >Yeah, but you still have to turn off your transmitter when you receive.
> > >That's the whole point off the 2-wire half-duplex link.
> >
> > but after you receive the last character you know you transmitted, you
> know you
> > can turn off the transmitter. It gives you a one character turn around
> delay
> > maybe. It saves having to know when to turn on the receiver
> >
> > --
> > http://www.piclist.com hint: To leave the PICList
> > mailto:piclist-unsubscribe-request@mitvma.mit.edu
>
> --
> http://www.piclist.com hint: To leave the PICList
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