On Sun, 11 Jul 2021 16:34:30 +0200 Nicklas SB Karlsson <n...@nksb.eu> wrote:
> Experimenting with Ethercat. > > Connecting three devices it work perfect. But with more there are cases > then only some messages arrive back to master and some cases there no > messages arrive back to master. Even though message do not arrive back > as expected checking with broadcast write message arrive at last device > and probing with oscilloscope I could see data is sent on Ethernet cable > back towards computer. No sign of other communication problems except > what I am pretty sure is ordinary Ethernet messages destroyed on purpose > by nodes. > > Anyone else here have any experience with Ethercat? A little bit of panic, no good answer but eventually figured myself. Conclusion I made was loopback at last device did not work as expected for more than three devices. Adding a second Ethernet card and sending around the ring however worked as expected, work counter increased as expected sending the "right way" around and not much happened as expected then sending the other way around so I consider it as solved as possible for me. Nicklas SB Karlsson _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
