David,

Are you using Cat5 cable, by chance?  Just curious how much current you're
running through your bus, and how large the wire is.  Seems like Cat5
wouldn't carry much current w/o significant loss.

-- Mitch

P.S.  You're mailer is sending a REPLY-TO header making it less-friendly
to reply to your messages.


On Fri, 5 Apr 2002, Orbit Communications wrote:

> Delhaye,
>
> We run the power next to the bus wires within the same cable without
> problem.
>
> We use a dual twisted pair.
>
>
> Best Regards
>
> David Huisman
> -----------------------------------------------------------------------
> ORBIT COMMUNICATIONS
> Reliable Wireless Solutions (Telemetry, Control, Monitoring ...)
> Website : http://www.orbitcoms.com
> PO Box 3469 Tuggerah
> NSW 2259, AUSTRALIA
> Phone: 61-2-4393-3627
> Fax  : 61-2-4393-3685
> Mobile: 61-413-715-986
> ----- Original Message -----
> From: "Delhaye Marijn" <maryn.delhaye@SKYNET.BE>
> To: <PICLIST@MITVMA.MIT.EDU>
> Sent: Friday, April 05, 2002 6:32 PM
> Subject: [PIC]:RS485 supply
>
>
> Hello , I got an RS485 bus with a different number of devices(PIC16F877)
> connected on the bus . Now is my question , how must i supply these devices
> . Is it possible to put next to the buswires 2 cables with ground and 5 V .
> Isn't there a problem with disturtion from other devices ? The distance of
> the buswire is something about 700 m . Thanks for helping me ! Ciao
>
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