On Wednesday 13 January 2016 01:33:01 Marius Liebenberg wrote: > I did make the F and the jog speed the same but still had the the > problem. That is why it is strange to me. > Something in the back of my mind says this is a pulse length problem, possibly caused by using an opto device with the wrong active polarity. If adding a microsecond to all 4 of the ini files stepper times, fixes it or effects it, it might be helpfull to see if the step pulses can be inverted and the stepper drive inputs reconfigured to be active by feeding the + line 5 volts, and hooking the step wire to the - terminal.
We've also some BoB's out in the wild that are equipped with notoriously slow opto's. I have one I sourced from ebay and had to remove that pins opto and take it direct as it was seriously screwing with my pwm spindle speed circuit. It has a 1205 label on it in the silkscreen. Its cheap but its control trouble. Best IMO is a now disco'ed C1G from cnc4pc, but bring more bucks. > ------ Original Message ------ > From: "TJoseph Powderly" <tjt...@gmail.com> > To: "Marius Liebenberg" <mar...@mastercut.co.za>; "Enhanced Machine > Controller (EMC)" <emc-users@lists.sourceforge.net> > Sent: 2016-01-13 02:05:48 > Subject: Re: [Emc-users] Very strange behaviour > > >G0 rate faster than G1/2/3 which uses F ? > >tomp/tjtr33 > > ---------------------------------------------------------------------- >-------- Site24x7 APM Insight: Get Deep Visibility into Application > Performance APM + Mobile APM + RUM: Monitor 3 App instances at just > $35/Month Monitor end-to-end web transactions and take corrective > actions now Troubleshoot faster and improve end-user experience. > Signup Now! > http://pubads.g.doubleclick.net/gampad/clk?id=267308311&iu=/4140 > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene> ------------------------------------------------------------------------------ Site24x7 APM Insight: Get Deep Visibility into Application Performance APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month Monitor end-to-end web transactions and take corrective actions now Troubleshoot faster and improve end-user experience. Signup Now! http://pubads.g.doubleclick.net/gampad/clk?id=267308311&iu=/4140 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
