On 9 March 2011 13:55, Tony Zampini <zampi...@cox.net> wrote: > I'm attempting to set up EMC2 to generate a PWM > signal for spindle speed control. I put a DVM on the > PWM parallel port pin in hopes to see an average > voltage of the PWM signal. But all I see is about 90mV, > and it never changes. > > I tried MDI commands like: > > M03 S100 > and > M03 S2000 > > I'm fairly new to EMC2. Can someone tell me > what is required to activate the PWM output?
Did you set up a spindle speed control in Stepgen, or are you doing by hand-editing the HAL file? You won't necessarily see the PWM signal with a multimeter, though I would expect to see something. Halscope (Machine -> Halscope) set to look at the p-port pin should tell you if EMC2 thinks it is outputting to the pin. If you want to pastebin (www.pastebin.com) your HAL file (in your home/emc2/configs/<machine name> directory) we can have a look at it to see what is missing. -- atp "Torque wrenches are for the obedience of fools and the guidance of wise men" ------------------------------------------------------------------------------ Colocation vs. Managed Hosting A question and answer guide to determining the best fit for your organization - today and in the future. http://p.sf.net/sfu/internap-sfd2d _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
