Hallo Mr Zeilhofer, with a good tuned system and native driver one can realize sample rates up to several kHz with jitter at some micro seconds. As far as I know USB gets polled by the kernel. I would expect it can be used in a sample rate range up to 100 Hz but we have no experience jet. May you can discover and post your results here?
Regards Wilhelm. Am 30.04.2019 um 09:49 schrieb Karl Zeilhofer: > Dear Mr. Wilhelm, > > thanks for your first advices. May I ask, what do you define as "good" > realtime behavior? > > Could this "bad" realtime performanc be improved by using a USB-adapter > with a supported chipset? Or does USB (3.0) introduce inherently bad > realtime performance? > > Kind regards, Karl Zeilhofer > > > On 30.04.19 07:47, Dr.-Ing. Wilhelm Hagemeister wrote: >> Hallo Mr Zeilhofer, >> >> generally the EtherCAT master should work with any Ethernet interface >> which is supported by the kernel if one uses the generic driver. >> >> Due to the fact that the generic driver uses parts of the regular >> network stack, don't expect good realtime behavior with an USB connected >> adapter. >> >> Regards Wilhelm >> >> Am 30.04.2019 um 01:40 schrieb Karl Zeilhofer: >>> Hi, >>> >>> has anyone experiences with running the IgH EtherCAT master via a >>> USB-Ethernet adapter? >>> I'm using one on one of my servers, which runs since years without >>> problems. It uses the r8152 Ethernet driver, which is not supported. >>> >>> For the first tests, I don't want to configure my main Ethernet port, >>> which is an e1000e, on my daily working machine. >>> As far as I understood from the documentation, that Ethernet port cannot >>> be used for the daily network traffic any more, right? >>> >>> If it would generally work over USB, I would buy a new adapter with one >>> of the supported chip sets. Any recommendations? >>> >> >> _______________________________________________ >> etherlab-users mailing list >> etherlab-users@etherlab.org >> http://lists.etherlab.org/mailman/listinfo/etherlab-users > -- > *Mechatronik* > *Karl Zeilhofer* | Wengstraße 58 | 4643 Pettenbach > | Austria > *www.zeilhofer.co.at <http://www.zeilhofer.co.at/>* | > k...@zeilhofer.co.at | +43 660 6591574 | > *UID:*ATU64031657 > > ------------------------------------------------------------------------ > > > > > > _______________________________________________ > etherlab-users mailing list > etherlab-users@etherlab.org > http://lists.etherlab.org/mailman/listinfo/etherlab-users > _______________________________________________ etherlab-users mailing list etherlab-users@etherlab.org http://lists.etherlab.org/mailman/listinfo/etherlab-users
