Hi, I need to implement the PROFIBUS-DP standard on a PIC. Now, I'm trying to colect information, since at Siemens they say that PROFIBUS is an open protocol, available to everyone who wishes to use it. Now, why cant I find the information? Its very possible that Im bad at search jobs, but in the CENELEC site they will charge me about 500 euros to buy the original paper + updates.... Any comments? Thanks Mauricio Jancic -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.