On May 25, 2011, at 12:10 PM, Dave wrote: > One more thing... if you swap the motor and you are just flat out of > ideas, I'd pickup the phone and call Geckodrive. > > They will talk to you and try and help. > > Dave
Going back to the beginning, before I pull the rest of my hair out....Will someone help me verify my configuration basics? When I originally set this up I ran the Stepconf Wizard. I just noticed that it has stepgen.X.steplen = 1 and stepgen.X.stepspace = 0. Could this be an issue? The manual says these should be in ns. I have Gecko 320X drives. Specs are: Step Pulse "0" Time: 0.5us Step Pulse "1' Time:1.5us According to an older post the Direction and Hold times are 200ns. There is a table here: ttp://wiki.linuxcnc.org/emcinfo.pl?Stepper_Drive_Timing - I have a 320X (newer than the 320 in this table) so all but the Step Time are possibly correct. I am getting base thread jitter of 10971 from the latency test on my system. I used the spreadsheet from the end of here: http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?TweakingSoftwareStepGeneration And it gives me stepgen.steplen of 1 periods. The current EMC manuals that I can find say this value should be in ns.... Also, I ought to be able to set a base period of 20,000 (in fact I ought to be able to set it even lower).... But when I do I get real time errors (I have isolcpus set and hyper threading turned off, btw). I can't seem to set it any lower then about 32000 or so without getting these errors.... Anyway, should I have in .hal: setp stepgen.0.steplen 1500 setp stepgen.0.stepspace 500 setp stepgen.0.dirhold 200 setp stepgen.0.dirsetup 200 Or should I have (as Stepconf Wizard did): setp stepgen.0.steplen 1 setp stepgen.0.stepspace 0 setp stepgen.0.dirhold 28000 setp stepgen.0.dirsetup 28000 ?? -Tom ------------------------------------------------------------------------------ vRanger cuts backup time in half-while increasing security. With the market-leading solution for virtual backup and recovery, you get blazing-fast, flexible, and affordable data protection. Download your free trial now. http://p.sf.net/sfu/quest-d2dcopy1 _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
