Thank you, but my stepper card can only master 5 kHz step frequency at maximum. Speed can't be my goal, but reliability. My drilling machine goes 40 mm per turn of a stepper (giving 1/10 mm resolution) so 5 kHz is plenty.
But: What about the following error? Peter Blodow At 19:51 03.02.2009, you wrote: >On Tue, Feb 03, 2009 at 07:13:38PM +0100, Peter blodow wrote: > > I hesitate to call stepconf for investigating because I'm afraid my > > changes will be overwritten and I have to do them all anew. Besides: > > is there a way to preserve my changes from stepconf? > >You're right, you shouldn't do this, and it will erase all your changes. > >Basically, the BASE_PERIOD defines the maximum step rate, because >(outside of 'doublestep' mode, which you've disabled to get long step >pulses) it takes at least 2*BASE_PERIOD ns to perform one step. > >To get the maximum possible step rate, decrease BASE_PERIOD. You will >get the highest possible step rate when BASE_PERIOD is at least as big >as 50000, your step length and space. There will always be a small >difference between the BASE_PERIOD you request and the one you get -- >while emc is running, you can see what you got with 'halcmd show thread' >in a terminal. > >On my system, BASE_PERIOD=50286 was the best value, because smaller >numbers gave an actual period of 49448ns or below. > >With BASE_PERIOD=50286, your maximum step rate will be 9.9431253kHz. > >Jeff > >------------------------------------------------------------------------------ >Create and Deploy Rich Internet Apps outside the browser with Adobe(R)AIR(TM) >software. With Adobe AIR, Ajax developers can use existing skills and code to >build responsive, highly engaging applications that combine the power of local >resources and data with the reach of the web. Download the Adobe AIR SDK and >Ajax docs to start building applications today-http://p.sf.net/sfu/adobe-com >_______________________________________________ >Emc-users mailing list >Emc-users@lists.sourceforge.net >https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ Create and Deploy Rich Internet Apps outside the browser with Adobe(R)AIR(TM) software. With Adobe AIR, Ajax developers can use existing skills and code to build responsive, highly engaging applications that combine the power of local resources and data with the reach of the web. Download the Adobe AIR SDK and Ajax docs to start building applications today-http://p.sf.net/sfu/adobe-com _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
