Hi Andy, Yes, I'm going to sense several RVDT/LVDT sensors and I need lots of frequency counters.
I was thinking about the 7i89 because I was planning on using a 7i80db as the main board. It would be ideal if I could use a sserial card with a custom firmware to read the frequency inputs. El lun, 10 de nov de 2025, 10:42, andy pugh <[email protected]> escribió: > On Mon, 10 Nov 2025 at 12:16, Leonardo Marsaglia <[email protected]> > wrote: > > > For the 7i89, a while ago PCW told me that it could be possible to make a > > counter mode only firmware and use only the A channel encoder input > since I > > only want to sense frequency and not direction. This way I can have 24 > > frequency counters in one board. Is this easily done via firmware > > editing/upgrade? > > You would need a new firmware for the Any-IO card, as I think that the > 7i89 is almost entirely passive. > > (It does have firmware, but I don't know what it does) > > Looking at the pinout of the DB25 each encoder channel appears there, > so the actual counting is on the FPGA card that the 7i89 plugs into. > > Why do you need 24 frequency counters? This sounds like you might be > doing analogue input via voltage to frequency conversion? In that case > there are likely to be better choices. > > -- > atp > "A motorcycle is a bicycle with a pandemonium attachment and is > designed for the especial use of mechanical geniuses, daredevils and > lunatics." > — George Fitch, Atlanta Constitution Newspaper, 1912 > > > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
