Hello Dave, On Thu, Feb 3, 2011 at 11:19 PM, Dave <e...@dc9.tzo.com> wrote:
> Are you able to get a position update back from the 7i43 every servo > cycle or are you simply looping the position back inside the driver in > the PC, which is probably just as well - after all this is a stepper > system. > We've tried both methods. Currently, we take the former one. Though, we can't get the real position feedback at every servo cycle. > > Do you have, or did you have any latency issues using USB to control the > 7i43 board? > Yes, we did. Actually, we almost decided to give up because of the latency and noise issues. > > Using USB is convenient from a physical connection standpoint if you > don't have any noise issues, but are there other reasons you wanted to > use USB seeing that the 7i43 is available with a LPT port interface also? > > One major reason is that I believe the LPT will be faced out earlier than USB. The other reason is that I don't have LPT on my laptop :-) -Yishin ------------------------------------------------------------------------------ The modern datacenter depends on network connectivity to access resources and provide services. The best practices for maximizing a physical server's connectivity to a physical network are well understood - see how these rules translate into the virtual world? http://p.sf.net/sfu/oracle-sfdevnlfb _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
