On Monday 11 September 2017 07:16:00 theman whosoldtheworld wrote: > why not powerlink ie?
Wikipedia description shows some promise. SPI speeds over a longer cable, maybe. > no need special chip, no need special hardware > ... but it run on every device ... so you can must to limit it to a > single core realtime working ... so other core is free for Lcnc ... > not tested yet with Lcnc istances so I'm not able to report latency > performance with Lcnc istance + powerlink ie istances ... its only > limit is that there are few device manufacturers who use it, we see it > will happen next year as it has now become an ABB protocol. Unfortunately, wikipedia never heard of the ABB protocol. Other links and cites please? Thanks. > rebards > bkt > > 2017-09-10 11:10 GMT+02:00 Nicklas Karlsson <[email protected]>: > > > In practice if you have ever had to set up a daisy chain topology > > > network you will not like it. One problem is that one connector > > > or device > > > > failure > > > > > takes down the entire network. The new switch based Ethernet is > > > much more reliable especially now with self test and green LED > > > built into > > > > every > > > > > end or every cable. > > > > Plan was to connect like shift register which should be very similar > > to Ethercat. What's worse is micro controller have FIFO so it is not > > possible to feed thru with good performance since virtual shift > > register length will be long in each device. Green LED should be > > possible also with daisy chain but there is a drawback all devices > > must work. > > > > Single chip will of course always work. For buses Ethercat for high > > bandwidth and CANopen for low bandwidth seems to be the choice. I > > think there is nothing wrong with Sercos but it seems to be more > > expensive for less performance. > > > > > > Regards Nicklas Karlsson > > > > ------------------------------------------------------------ > > ------------------ > > 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 > > [email protected] > > 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 > [email protected] > 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 [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
