Hi.

I think some PICs has serial ports where the slew rate
is programmable... (?). Or at least has a "slow" setting
that can be programmed on or off.

Jan-Erik.



Carl Denk wrote 2013-07-07 12:18:
> Thanks for all the replies, and yes I normally have some error checking
> and retry.
> Probably will try 1200 baud to start.
>
> You might use a low slew rate driver to limit reflections.
> Can someone suggest an appropriate driver?
>
>
> On 7/6/13 10:08 PM, Jesse Lackey wrote:
>> I concur - you can do everything the wrong way with rs485 and all is
>> fine at low bitrates.  If you have a CRC check on your messages, and a
>> retry mechanism of some sort (maybe an acknowledgement response and if
>> this ack is not seen within a timeout period, a retry), you'll be in
>> fine shape.
>> J
>>
>
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