Sio serial module install problem with ActiveState

yaipa h. yaipa at
Fri Jul 25 06:49:49 CEST 2003


Thanks, basically one server feed many serial clients.  From the sound
of your post I had better get "Serial Port Complete" before giving it
another run. 



Peter Hansen <peter at> wrote in message news:<3F146F57.94A49564 at>...
> "yaipa h." wrote:
> > 
> > All,
> > 
> > Worked like a charm for me too! I used it to develop an
> > automated attendant for a Serial Oven Controller. The
> > attendant ran from Sparc Solaris using Python 2.1 and pySerial.
> > 
> > The only weird thing, which I didn't get a chance to
> > debug, was a perfectly working script under RS-232
> > got terribly out of sync when R/W I/O to a RS-485
> > serial network.  Any reason why that would be?
> Well, one reason might be that RS232 is point-to-point, while
> RS-485 is many-to-many, at least in principle.  Was this a 
> bus network, or at least a "multidrop" situation with one master
> and many slaves?  There are no guarantees in those situations, unless
> you've been very careful to ensure proper handshaking, timing,
> and such.
> If you want to discuss this, please define "out of sync" in more
> detail... it could mean anything.
> -Peter

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