Bryan Mumford wrote: > When we ran my friends CNC machine on the live CD and the motors ran > smoothly. A dial indicator showed we returned to zero. > > The dmesg file says the elapsed clocks went from 1,482,000 to > 2,594,000. How many usec is that at 1.6 Ghz? > The reported units are ns, so 2,594,000 is 2.6 milliseconds, which is pretty bad! (If I did the conversion right.) That is a typical latency problem, though. It would be "not good" for a servo system, it would be disastrous for a software stepper system, and I'm amazed you were able to return to zero. But, these things are sporadic, so your testing may have been when the laptop was behaving, and the worst disturbance may have been at some other instant. I often get one when the Axis screen opens up, and then have no further problems.
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-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
