Experimental Physics and
Industrial Control System

>>>> we avoided using multidrop configuration
 
Can you tell us why you avoid using multidrop configuration when you use RS485 ?
 
- JOhnny Tang

________________________________

From: [email protected] on behalf of Owens, PH (Peter)
Sent: Thu 5/19/2005 6:28 AM
To: Geng, Xiaosong; tech-talk
Subject: RE: Serial RS485 question



We are using the Hytec 8516 octal serial IP card.

It can be configured for either RS422 or RS485.

It uses the same driver as the 8515 RS232 card.

I have tested the cards with very high baud rates,
but mostly we stick to 9600.

We have avoided using multidrop configurations.

Pete.

> -----Original Message-----
> From: Geng, Xiaosong [mailto:[email protected]]
> Sent: 18 May 2005 14:45
> To: tech-talk
> Subject: Serial RS485 question
>
>
> Dear all,
> 
> I would like to ask questions about serial RS485. If you
> could respond, it would be greatly appreciated.
> 
> Which kind of driver are you using? multidrop or
> point-to-point? How about the performance? Who is using
> drvAscii/drvSerial with multidrop?
> 
> 
>
> Thanks,
> Xiaosong Geng
> SNS Controls Group
> ORNL
>
>

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