You are using the hal encoder counter? On the beagle bone - are you not limited to just a servo thread? 1khz? So you are running all the encoder functions in 1 thread. I don't know how that would work very well with the hal encoder counter to calculate velocity.
You might want to look at the signal going to motion.spindle-speed-in. It might not be what you are expecting. sam On 12/9/2014 8:23 AM, Karl Jacobs wrote: > Thanks for checking, Sam, and good to know. I'll try sim on my version > but I doubt it will be different to my "real world" version. I use the > same low-passed spindle encoder velocity on spindle-speed-in. I'll try > to find the difference between the 2.7 and 2.8 code then (or the > difference to the machinekit branch). > Karl > > Am 09.12.2014 um 14:36 schrieb sam sokolik: >> I don't have 2.7 here.. But in 2.8(master) lathe sim works as expected. >> >> This short program >> >> G95 >> s100m3 >> g1z4f.001 >> g0z0 >> m30 >> >> Z moves to 4" at .1ipm (which seems right 100*.001=.1) >> Changing the spindle speed changes the feed. >> >> Looking at hal in the lathe sim - the motion.spindle-speed-in is hooked >> to a low-passed spindle encoder velocity. >> >> sam >> >> >> >> On 12/9/2014 6:38 AM, Karl Jacobs wrote: >>> Thanks for the info. If I disconnect spindle-speed-in, G76 and G33 stop >>> working too, so they seem to need both signals somehow, but from what >>> you say that still does not necessarily mean that G95 must work as well. >>> I rather suspect the motion planner. Maybe someone can verify if G95 >>> works in the non-machinekit linuxcnc version? I will post to the >>> machinekit list as well. >>> Am 09.12.2014 um 12:24 schrieb andy pugh: >>>> On 9 December 2014 at 08:53, Karl Jacobs <karl.jac...@gmx.de> wrote: >>>> >>>>> I can rule out hardware problems of an encoder by using a hal siggen >>>>> component to drive the hal encoder inputs (Phase A and Z, counter mode) >>>>> to simulate the spindle speed signal. That must be working correctly >>>>> because G76 and G33 both give the right result (my X and Z axis >>>>> components drive a real lathe so I can watch and check the motions). >>>>> >>>> G76 and G33 use motion.spindle-revs, and G95 uses motion.spindle-speed-in >>>> So, it is possible to have a fully functional G76 and G33 but not have a >>>> working G95. >>>> >>>> It is possible that this is due to the new motion planner. >>>> >>>> It is also possible that this is a Machinekit-only problem. Machinekit has >>>> now diverged considerably from LinuxCNC, and your query should probably be >>>> directed to the Machinekit mailing list. >>>> >>> ------------------------------------------------------------------------------ >>> Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server >>> from Actuate! Instantly Supercharge Your Business Reports and Dashboards >>> with Interactivity, Sharing, Native Excel Exports, App Integration & more >>> Get technology previously reserved for billion-dollar corporations, FREE >>> http://pubads.g.doubleclick.net/gampad/clk?id=164703151&iu=/4140/ostg.clktrk >>> _______________________________________________ >>> Emc-users mailing list >>> Emc-users@lists.sourceforge.net >>> https://lists.sourceforge.net/lists/listinfo/emc-users >>> >>> >> >> ------------------------------------------------------------------------------ >> Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server >> from Actuate! Instantly Supercharge Your Business Reports and Dashboards >> with Interactivity, Sharing, Native Excel Exports, App Integration & more >> Get technology previously reserved for billion-dollar corporations, FREE >> http://pubads.g.doubleclick.net/gampad/clk?id=164703151&iu=/4140/ostg.clktrk >> _______________________________________________ >> Emc-users mailing list >> Emc-users@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/emc-users >> > ------------------------------------------------------------------------------ > Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server > from Actuate! Instantly Supercharge Your Business Reports and Dashboards > with Interactivity, Sharing, Native Excel Exports, App Integration & more > Get technology previously reserved for billion-dollar corporations, FREE > http://pubads.g.doubleclick.net/gampad/clk?id=164703151&iu=/4140/ostg.clktrk > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > > ------------------------------------------------------------------------------ Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server from Actuate! Instantly Supercharge Your Business Reports and Dashboards with Interactivity, Sharing, Native Excel Exports, App Integration & more Get technology previously reserved for billion-dollar corporations, FREE http://pubads.g.doubleclick.net/gampad/clk?id=164703151&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
