> > Could you do e.g. rigid tapping when there is a LinuxCNC and another PID > loop on the motor driver?
Granite devices has a good description of dual feedback loops (and a mention for linuxcnc). The inner velocity feedback loop is normally closed on the drive and the outer position loop by Linuxcnc https://granitedevices.com/wiki/Dual-loop_feedback_position_control Ethercat is an industry standard from Beckhoff https://www.beckhoff.com/ that allows slave devices to be daisy chained via ethernet cables and coordinated by an ethercat master. There is a driver interface for linuxcnc to the IgH Etherlabmaster master https://etherlab.org/en/ethercat/ that is installed on your linuxcnc PC. Linuxcnc works in much the same way as if the ethercat master was any other external device like mesa. Ethercat can span a whole factory so the added complexity and cost may not be warranted for a much smaller cnc machine. Rod Webster *1300 896 832* +61 435 765 611 Vehicle Modifications Network www.vehiclemods.net.au On Thu, 21 Apr 2022 at 04:46, andy pugh <bodge...@gmail.com> wrote: > On Wed, 20 Apr 2022 at 17:55, Torsten Curdt via Emc-developers > <emc-developers@lists.sourceforge.net> wrote: > > > > > If you wanted an alternative to Mesa there are always solutions from > Jon or > > > you could use ethercat. Linuxcnc will not care at the tc level. > > > > I am falling short on finding those. > > Do you have a link? > > https://pico-systems.com/motion.html > > There is also all the stuff listed here: > http://wiki.linuxcnc.org/cgi-bin/wiki.pl?LinuxCNC_Supported_Hardware > > -- > atp > "A motorcycle is a bicycle with a pandemonium attachment and is > designed for the especial use of mechanical geniuses, daredevils and > lunatics." > — George Fitch, Atlanta Constitution Newspaper, 1912 > > > _______________________________________________ > 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
