thanks for the replies guys. I am currently seeing what cards JT has that I can get.
I have another question though. I also have a slant bed cnc lathe here that I am going to retrofit next. I will need at least 2 axis of stepgens and a 0-10 volt spindle output. I will want to bring the encoders back to the control on this also so need at least 2 encoder counters plus spindle encoder. The reason I go for the step-dir servos is that it costs a extra 80usd per axis to get the analog control option from the servo supplier and that adds up when you start getting lots of servos. also step and dir is really easy to get started with open loop. If I started from scratch and didn't have any mesa cards available what would you guys recommend? I am quite happy to chop and change cards with my cnc mill if that helps. Just want the cheapest and easiest option to set up. probably ease of setup is more important than saving a little money. Regards Andrew On Mon, Apr 6, 2020 at 12:41 AM Peter C. Wallace <[email protected]> wrote: > On Sun, 5 Apr 2020, andy pugh wrote: > > > Date: Sun, 5 Apr 2020 13:14:46 +0100 > > From: andy pugh <[email protected]> > > Reply-To: "Enhanced Machine Controller (EMC)" > > <[email protected]> > > To: "Enhanced Machine Controller (EMC)" <[email protected] > > > > Subject: Re: [Emc-users] closing the loop in linuxcnc with a 7i76 mesa > card > > and step direction control > > > > On Sun, 5 Apr 2020 at 09:40, andrew beck <[email protected]> > wrote: > > > So I have a 5i25 and 7i76 currently connected I'm running out of io, so > am > > thinking of getting a 7i73 for the console buttons eg cycle start so > that I > > can free up my 7i76 io for the toolchanger. > > If you have 5I25 and 7I76 and need more encoders, there are a few > options available from Mesa: > > > 7I85 = 4 encoder inputs + 5 RS-422 serial ports > > 7I85S = 4 encoder inputs + 4 step/dir outputs + 1 RS-422 serial port > > 7I89 = 8 encoder inputs or 7 encoder inputs and 1 RS-422/RS-485 serial port > > Peter Wallace > Mesa Electronics > > > > _______________________________________________ > 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
