Donnie Timmons wrote: > If I set pwmgen.0.scale to 1 as soon as the amps enable I get a following > error. Set it to 5.5 and ever thing seam to work except homing it faults out > with a following error as soon as it try to make the final move. The only way > that I have got homing to work is to set MAX_VELOCITY to 1 when it should be > 4.16667 witch gives me 250 IPM.
Hi Donnie. First of all, are you using the software pwmgen component or the hostmot2 pwmgen? In either case, only one of the documentation sources you listed is relevant, and using the wrong one will cause nothing but confusion. Second, it's great that with scale = 5.5, it can move in a somewhat controlled manner. That probably means you're very close to having a working machine. Cheers! Most likely the source of your following error is a tuning problem with your servos. I recommend you use HAL and halscope (rather than the full emc2) to try to tune the axes, one by one. Tuning servos is a bit of a black art, I'm afraid, and the pwmgen scale is just one of the knobs you have to get set correctly. Here are a couple of links to get you started: <http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?Tuning_EMC2/HAL_PID_Loops> <http://en.wikipedia.org/wiki/PID_tuning> <http://www.anderswallin.net/2008/04/x-axis-test/> -- Sebastian Kuzminsky Why do we even pretend to have nations these days? -- Bruce Sterling <http://www.seedmagazine.com/news/2009/01/2009_will_be_a_year_of_panic.php> ------------------------------------------------------------------------------ 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
