On Tue, 9 Jan 2007, Javid Butler wrote: > Date: Tue, 9 Jan 2007 12:22:58 -0600 > From: Javid Butler <[EMAIL PROTECTED]> > Reply-To: "Enhanced Machine Controller (EMC)" > <emc-users@lists.sourceforge.net> > To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net> > Subject: Re: [Emc-users] 5I20 card type 2! > > How are they planning to implement the Ethernet communication? Ethernet is > great for things like file transfers between computers-the task it was > designed for-but has a some overhead required for reliable real time > operations.
We are planning to use PowerLink (with 100bt and POE), But I will definately take a look at ACN. Using PVT (Position,Velocity,Time) packets mean a missing packet now and again is fairly benign, as the interpolater will just, well, interpolate. PowerLink is good for several KHz or so with reasonable number of Axis/I0, and good PVT requires only a KHz or so. PowerLink does require a separate Ethernet for the realtime segment, but has provisions for tunneling TCPIP by dribbling it in free time slots. Peter Wallace ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys - and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
