Yi-Shin Li wrote: > > You are right. The servo loop should not be implemented the way as you > described. I believe it could be implemented on FPGA though. > But, there are MAJOR advantages to having the central processor (whatever it is) managing the servo loop. First, that is the way EMC2 is built right now. Second, it allows very easy performance testing and tuning of the servo. This could all be done with the servo loop in an external controller, but that would require more development. Also, it allows tight coupling between motion and auxilliary I/O functions where that is needed. Keeping a laser On/Off command tightly synced with motion is a problem that comes up all the time.
Jon ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
