2017-02-04 0:09 GMT+02:00 Peter C. Wallace <p...@mesanet.com>:
> >> If its sinking current, yes, you can get 5V swings (so OK for drives > with > >> common +5 on the Opto inputs) if sourcing, it can only swing to 3.3V or > so > >> which is not so good. > >> > > > > Good for me, the desired drives have common +5V. > > > >> > >> Note that if you use bare FPGA I/O, a single wiring mistake will ruin > your > >> day... > >> > > > > Sure, that's a risk... > > I would take 7i47S if I needed an analog output... or 7i47 if I needed > > encoders. > > 7i42TA would do the job either? > All would work > > The 7I42 is just a I/O protector so doesnt change the FPGA drive capability > but will protect the FPGA I/O from mistakes up to +-12V > > Just want to make sure before ordering Let's suppose I have 7i80HD and 7i47S. I need step/dir/enable for 3 stepper drives routed to 7i47S TX outputs and 48 GPIOs on two 50pin connectors. Where do I connect 7i47S (P1, P2, P3)? Which firmware do I use? Thanks ------------------------------------------------------------------------------ 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 Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
