As has been stated, Ethernet has lots of advantages. We use it for a real time control network (loop control > 1kHz.) We just use an unused ethertype. All other stuff on the network will thus ignore the data and we don't need to have an IP stack (we do since we also run web traffic, but our control strips out the dedicated packets before the IP stack even sees them.) Main advantages to 10/100bT are electrical isolation (no ground loops!), high noise immunity, and ubiquitous cabling. A phy and connector are only a buck or two cost adder as the microcontroller typ has the mac built-in. Though if you want to do two ethernet ports your choice of controllers is more limited w/ built in dual macs. SERCOS solves that w/ an asic/fpga (+ licensing) but probably overkill for what you need.
SMD On Mon, Jun 8, 2015 at 12:06 PM, Philipp Burch <p...@hb9etc.ch> wrote: > Hi Dave! > > On 08.06.2015 15:43, Dave Cole wrote: > > > > ___________________________________________________________ > > From the Ethercat Technology Group membership application page: > > > > The membership cost is pretty low... !!! :-) > > > > And there are some sample Ethercat master and slave source code available > > > > http://www.ethercat.org/en/products/4F84049B9950437FB34749A52AB20786.htm > > http://www.ethercat.org/en/products/54FA3235E29643BC805BDD807DF199DE.htm > > > > There is also at least one Ethercat open source master repository out > > there.. > > > > http://sourceforge.net/projects/soem.berlios/ > > > > Dave > > > > Good to know that it's free of charge. But since I'm mainly interested > in the slave part, things are not that easy: Their slave sample code is > for a microncontroller interfacing the EtherCAT-ASIC, so they're just > making their money somewhere else ;) > > Thanks, > Philipp > > > > ------------------------------------------------------------------------------ > > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > > ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
