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
