On Thu, Aug 20, 2009 at 12:12:24AM -0500, Jon Elson wrote: > So, fixing the index pulse to reliably sense that, and > completely forgetting the quadrature counting is the only thing that > would work. He would then only use the index pulse, once per rev.
I thought we were talking about dividing down the quadrature to a lower rate. I have done this with Jeff's code, posted earlier. When we did it, we didn't worry about stretching index. It worked fine, because like Alex explains, the only problem with missing some is the spindle will make an extra turn or two before the threading or tapping pass starts. If you are doing one pulse per rev, you sure can't miss any of them, and in this case you are right - I guess you should stretch them. (I don't recommend any of this. Getting a suitable encoder or suitable hardware to read the existing one is so much better.) Chris ------------------------------------------------------------------------------ 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-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
