I should have mentioned, I’m in the process of building a reverse polarity circuit to trip polarity by issuing a CCW M4 via a 5v output. My motor controller doesn’t natively support CCW.
I entered the code and it made it all the way down until the spindle stopped. No reverse so it stayed there. On Thu, May 7, 2020 at 6:36 PM Dan Henderson <luvtof...@gmail.com> wrote: > Thanks Jon. My max jog speed is 54 IPM so I should be good to give that a > try. Thanks for the test code! > > On Thu, May 7, 2020 at 6:16 PM John Dammeyer <jo...@autoartisans.com> > wrote: > >> > -----Original Message----- >> > From: Jon Elson [mailto:el...@pico-systems.com] >> > Sent: May-07-20 3:54 PM >> > To: Enhanced Machine Controller (EMC) >> > Subject: Re: [Emc-users] Sourced from: Re: Fluctuating RPM using CUI >> ATM 10 encoder >> > >> > On 05/07/2020 12:23 PM, Dan Henderson wrote: >> > > Is there a simple test code I can run to confirm ridged tapping is >> working >> > > or even the feed rate is synchronized to the encoder feedback? >> Without, >> > > spindle-at-speed enabled I�ve no way to visually confirm this. >> > >> > Just try these lines and see what it does, with the Z clear >> > to move down to Z-1 without hitting anything : >> > M03 S500 >> > G01 F10 Z0.5 >> > G33.1 Z-0.55 K0.025 >> > >> > If it stalls with the spindle running, it never saw the >> > spindle encoder trip the index-enable to off. >> > If it moves down in Z, then reverses the spindle and pulls >> > back in Z, then it is all working. >> > That will give a 40 TPI thread (assuming inch units). >> >> 500 RPM is 8.3333 RPS = 0.12 turns/second. >> Threading a 40 turns/inch hole means 0.12 inches/second or >> 12.5inches/minute. >> So you also have to make sure that your Z axis can move that quickly. >> John Dammeyer >> >> > >> > Jon >> > >> > >> > >> > _______________________________________________ >> > Emc-users mailing list >> > Emc-users@lists.sourceforge.net >> > https://lists.sourceforge.net/lists/listinfo/emc-users >> >> >> >> _______________________________________________ >> Emc-users mailing list >> Emc-users@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/emc-users >> > _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
