On Tue, 21 Feb 2017, Andrew wrote: > Date: Tue, 21 Feb 2017 00:26:58 +0200 > From: Andrew <pkm...@gmail.com> > Reply-To: "Enhanced Machine Controller (EMC)" > <emc-users@lists.sourceforge.net> > To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net> > Subject: Re: [Emc-users] 6I24 PCI or 7I80 Ethernet? > > 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 > ------------------------------------------------------------------------------ > Assuming you have a 7I80HD-16, 7i80hd_16_svst1_4_7i47s.bit
will give you a config with 4 stepgens, 4 encoders, 1 pwmgen for spindle (on GPIO 0..23) and GPIO 24..71 as plain I/O Peter Wallace Mesa Electronics ------------------------------------------------------------------------------ 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
