Ian, Do a test with a G1 at max speed. You should get the same results as a G0.
If you have a Gecko drive you can tune the low range for smooth operation with the trim pot. Is your drive a micro step drive? or are you running whole steps? John On 9 Feb 2008 at 18:51, [EMAIL PROTECTED] wrote: > Hi, > I am confused by an odd stepper problem which I can't understand. The > stepper affected is the one driving my rotary axis and the problem > is that it won't go fast enough... To explain - if I issue a G1 > command in MDI, I am limited to a F20 speed as, beyond that, the > stepper gets very jittery and loses steps (at F40 it gives up > altogether). However, if I issue a G0 command, the stepper whirls > away happily at 3 or 4 times the speed and doesn't seem to lose > steps at all (i.e. I can send it one way and then the other and it > returns to where it started.). So, what is the difference between > a G1 command and a G0 command and how can I get the G1 speed to > increase reliably up to almost the G0 speed? I'm running the > latest version of EMC2 on Ubuntu (unless I've missed a service > release in the last 2 weeks ). > -- > Best wishes, > > Ian > ____________ > Ian W. Wright > Sheffield UK ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
