On Friday 27 October 2017 13:14:30 Dave Cole wrote: > Check out this video - this is 2013 and he is using Ethercat with > LinuxCNC. Unfortunately I can't understand him. :-( > > https://www.youtube.com/watch?v=yR9rCFavFjU > > Dave > That looks like well over a kilobuck just to wave some masking tape around. Except for spindle's, and Z on the g0704, I only have about $90 to $125 in any other axis beyond the bobs. And they've carved up some pretty nice stuff.
> On 10/27/2017 6:40 AM, Nicklas Karlsson wrote: > > I make my own hardware, it's only for fun and I do not intend to > > earn money on it. It's however useful to know how it works during > > normal working hours. > > > > 2017-10-27 11:07 GMT+02:00 theman whosoldtheworld <bleachk...@gmail.com>: > >> I use the suggestion and indication from linuxcnc forum: > >> > >> https://forum.linuxcnc.org/24-hal-components/22346-ethercat-hal-dri > >>ver > >> > >> about SOEM, The basic implement is not realtime .... so is ok for > >> user command, not so for drive command. Any how my decision is not > >> utilize ethernet bus for drive position/velocity/torque command. > >> Mesa analogue signal and feedback encoder on mesa card are too easy > >> and precise signals to use to go for alternative methods that > >> usually do not give such good performances. Keep in mind that > >> realtime on ethercat is not a universal value ... commercially > >> there are devices that go under 1 ms but others that arrive up to > >> 10-20ms .... for example kunbus has made devices on pi3 with > >> ethercat and more, but with a realtime of 5ms. > >> > >> I have made the opinion that bus-rt on ethernet are very nice, but > >> they will really be useful only in some have. in the meantime it is > >> best to play on to be ready and wait. If you would use it for data > >> comm between some device or for connect some device without problem > >> of 5-10ms response time all work fine. I could not recommend any > >> ethercat for professional use as a result of my experiences. But > >> I'm sure many others have taken advantage of it. > >> > >> Last but no least, there is also the security issue. Here in Europe > >> ethernet-ip and secure signals do not agree much for example. In > >> addition, many drive manufacturers do not have safety over ethercat > >> even if they have the bus. > >> > >> > >> regards > >> bkt > >> > >> 2017-10-26 18:19 GMT+02:00 Nicklas Karlsson > >> <nicklas.karlsso...@gmail.com> > >> > >>> On Thu, 26 Oct 2017 13:36:26 +0200 > >>> > >>> theman whosoldtheworld <bleachk...@gmail.com> wrote: > >>>> I'm working with it now using linuxcnc implementation ... and in > >>>> past > >>> > >>> with > >>> > >>>> backoff device. ... > >>> > >>> I just started to look a day or two ago, which Ethercat > >>> implementation? > >>> > >>> ------------------------------------------------------------ > >>> ------------------ > >>> Check out the vibrant tech community on one of the world's most > >>> engaging tech sites, Slashdot.org! http://sdm.link/slashdot > >>> _______________________________________________ > >>> Emc-users mailing list > >>> Emc-users@lists.sourceforge.net > >>> https://lists.sourceforge.net/lists/listinfo/emc-users > >> > >> ------------------------------------------------------------ > >> ------------------ > >> Check out the vibrant tech community on one of the world's most > >> engaging tech sites, Slashdot.org! http://sdm.link/slashdot > >> _______________________________________________ > >> Emc-users mailing list > >> Emc-users@lists.sourceforge.net > >> https://lists.sourceforge.net/lists/listinfo/emc-users > > > > -------------------------------------------------------------------- > >---------- Check out the vibrant tech community on one of the world's > > most engaging tech sites, Slashdot.org! http://sdm.link/slashdot > > _______________________________________________ > > Emc-users mailing list > > Emc-users@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/emc-users > > ---------------------------------------------------------------------- >-------- Check out the vibrant tech community on one of the world's > most engaging tech sites, Slashdot.org! http://sdm.link/slashdot > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene> ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
