use the encoder feedback on both the motor drive and LinuxCNC On Wed, Apr 20, 2022 at 5:38 PM Sam Sokolik <samco...@gmail.com> wrote:
> Linuxcnc doesn't care where you close the feedback loop (linuxcnc always > closes the feedback loop). Simple step/direction closes the loop between > the step-gen and linuxcnc. > > > > sam > > On Wed, Apr 20, 2022 at 3:57 PM Torsten Curdt via Emc-developers < > emc-developers@lists.sourceforge.net> wrote: > > > > > That said - that's a dual loop with two different encoders. > > > > That's not really the same dual loop when you have LinuxCNC and a > > Closed > > > > Loop Stepper/Servo Driver. > > > > > > If you only have one feedback source, how can you have a dual feedback > > > loop? With the feedback closed on the driver, your joint will be > treated > > as > > > if its open loop by linuxcnc. > > > Yes, Linuxcnc will use a pid but its generally not aware of the drive's > > > encoder. Its just dealing with step and direction pulses. > > > > > > > That is exactly the point I was trying to make. > > I guess the closed loop on the driver will do a decent job. > > But such a system does not really seem to be in the full spirit of > LinuxCNC > > being in control. > > > > _______________________________________________ > > Emc-developers mailing list > > Emc-developers@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/emc-developers > > > > _______________________________________________ > Emc-developers mailing list > Emc-developers@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-developers > -- Addressee is the intended audience. If you are not the addressee then my consent is not given for you to read this email furthermore it is my wish you would close this without saving or reading, and cease and desist from saving or opening my private correspondence. Thank you for honoring my wish. _______________________________________________ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
