> > > If you use a little RS485 Tx/Rx chip at each end, then that'll absorb 7v > > > of ground offset without further ado. > > > > Yes balanced signal RS485 is good. I changed to isolated gate driver > > and then there is no need for isolation on SPI. Then distance is > > longer or network larger I could add an Ethercat module or use micro > > controller with builtin Ethercat. > > Yup, RS485 will do 1.2 km in one hop, but it won't do anywhere near 10 > Mb/s on that length, so you'd need repeaters, e.g. a pair of sn65lbc179 > chips for each full duplex hop.
Remote control? > There are RS485 chips with low input loading, allowing up to 256 nodes > on a multipoint bus. That'd be a big machine shop too, and might warrant > a second serial bus, or more, for unlimited node count. Then it come to longer distances or a bus I think Ethercat is the best. Then distance is a few inches maybe SPI is a good choice. ------------------------------------------------------------------------------ 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
