A couple of times I had request for implementing Profibus in my devices. So far I wasn't able to do it in satisfying way. As far as I know, full documetation for Profibus cost arround 3000 euros, you are obligated to pay fee for using Profibus since it is a patent. This always turned me away for looking any further into this, and I used a workaround (use low cost PLC as gateaway). I'm very eager to add this "function" to my work, so please post any discoveries or toughts about this matter, it would be very appreciated.
Profibus speed starts at 1.5Mbps, but I think that slave devices can start as low as 9600 bps, am I right? Anything higher than 57600 would exclude PIC as possible Profibus slave.
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