Matthew Miller wrote :

> On Sun, Feb 13, 2005 at 01:40:13PM +0100, Jan-Erik Soderholm wrote:

> > But then, how do you connect the 32 "nodes" on a single
> > RS485 "network" ? (32 according to the original spec, newer
> > hardware can handle a higher number of concurrent nodes
> > due to higher "off" impedance in CMOS then in the original
> > bipolar devices when the spec was written...)
> 
> Well, those nodes just connect to the same twisted pair ;) 
> The trouble is deciding when you can transmit.

Now, how do you transmit *at all* if the other 31 nodes
are activily holding the line low (or high or whatever) ?

Never mind...

Jan-Erik.



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