Ok. Just fun I would say it's a good thing. I also tried the Estun. I would say great product for the price paid. If you have to do a 3D printer that works for 48 hours, or an electrorube device, I recommend you continue to use mesa cards.Personally, I did not have problems on the drive side, but I had problems deleting the digital outputs of an I / O slave ... Delays in the order of 50ms and I only noticed after 4 hours of work. As I saw this I stopped the tests and found out that the problem came from the bus (although I do not know how) .... using the outputs on board a 7i66 everything work fine.
in any case my warning to avoid for now using realtime ethernet buses is in the fact that the producers are selling too little performance software compared to the ardware on board. So they want to do too many things .... but in some time I guess the right hardware will become economical enough because it can be mounted on the devices. That said this next month I will start a new test with a different product .... and I hope in January to be able to put on board a commercial plc rt-ethernet open source. bkt 2017-10-27 12:40 GMT+02:00 Nicklas Karlsson <nicklas.karlsso...@gmail.com>: > 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-driver > > > > 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
