piclist 2005\08\23\115843a >
Thread: RS485
www.piclist.com/techref/io/serials.htm?key=rs485
picon face BY : Gerhard Fiedler email (remove spam text)



Martin Klingensmith wrote:

>> I see that they connect all the drivers together, so this means that
>> I'll have to waste a pin to enable/disable the transmitters I'm not
>> using. Is there a correct way to a multidrop network on rs485 ?

> I stole this [attached PNG image] from an Omega D1000 series manual. The
> difference may be that the slave modules cannot initiate communications
> perhaps, but it only requires two lines.

This saves wires for the connections between the devices, but not the
processor pin Mauricio was talking about (to enable/disable the individual
transmitters).

Gerhard
<19vkwa6tw598v$.1u2gh9ans95v7$.dlg@40tude.net> 7bit

In reply to: <430B426E.7040009@nnytech.net>
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