piclist 1998\11\18\120626a >
Thread: Data link question .......
www.piclist.com/techref/mems.htm?key=data
picon face BY : Peter L. Peres email (remove spam text)



On Tue, 17 Nov 1998, Ricardo Ponte G wrote:

> Hi Piclisters!!!:
>
>         Today I have a system with a PIC16C73A controlling an AC motor-generat
or
> and I need some support of you:
>
>
>         I want to send data via RS-485 from my system (near the motor) to a PC
, so
> I would like if you drive me to choose a good idea about the cable, the
> plug and the jack to make the data link.

imvho you need to use a separating transformer and modified Manchester
coding on RS485 because of the notorious ground loop / raised ground
problems with semi-mobile generators. The other way is an optically
separated interface.

hope this helps,

Peter

<Pine.LNX.3.95.981118181111.468A-100000@plp4.plp.home.org>

In reply to: <199811172247.SAA26123@rs4s1.datacenter.cha.cantv.net>
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