Hello John, I don't know If I understand you correctly, but I already have the boards and I intend to use the 7i70 for inputs (I have already 6 inductive sensors only for the turret and also all the limit switches and some other switches for the tailstock and tail body). Then I have more than 10 relays to drive and that's where the 7i71 comes in. I already have the boards and I choose them for the convenience of the RJ45 jacks.
I planned to use the 7i33 to drive the servos and also the spindle but since the servos behave excellent with step + dir (they work with 17 bit encoders) and also I can simplify the mechanical setup I decided to use them with step and direction instead of closed loop. So the 7i33 will be used only to drive the analog spindle input on the VFD. The thing is, I'm lacking the breakout board for the step+dir so I was thinking about using the 7i47 which seems to do the job, but I wanted to ask here because may be there's another one that suits better for the job. El dom., 15 dic. 2019 a las 23:10, John Dammeyer (<jo...@autoartisans.com>) escribió: > Let's see: > 6i24 = $139 > 7i33 = $69 > 7i47 = $69 > 7i44 = $69 > 7i77 = $119 (48 outputs, not really for buttons?) > 7i70 = $79 (48 inputs not really for Relays) > ========= > $544 > > Perhaps take a step back and make a list of how many inputs and outputs > you expect to need. > > Wouldn't a 7i78+5i25 Plug-n-go kit for $158 work just as well? > > John > > > > > -----Original Message----- > > From: Leonardo Marsaglia [mailto:ldmarsag...@gmail.com] > > Sent: December-15-19 5:30 PM > > To: Enhanced Machine Controller (EMC) > > Subject: [Emc-users] 6i24 + 7i44 configuration > > > > Hello again. > > > > I'm testing my boards and configuration before I install everything on > the > > real machine. > > > > I'm configuring a lathe with 2 servos for the X and Z axis, one PWM > > converted to analog for the spindle, and one encoder input for the > spindle. > > Also a lot of input and outputs to deal with. > > > > For that I purchased a 6i24 with a 7i44 to drive one 7i70 and a 7i71 for > > inputs and outputs. In adition to that I originally planned to use a 7i33 > > to drive the servos and spindle with analog voltage and also read the > > encoders coupled to the screws and the one on the spindle. > > > > I changed my mind and I plan to use step + dir to drive the servos and > > leave the rest as it was originally planned. So I guess I need another > > daughter card to drive the servos via step + dir. > > > > From what I read the ideal board would be the 7i47 but I needed to ask > here > > first. Also I'm having a little bit of trouble finding the right firmware > > for this kind of setup. > > > > To sum up: > > ---- 7i70 ---->Relays > > / > > ----> 7i44 -----> 7i71 <-----Sensors, buttons, etc... > > / > > 6i24 ----> 7i33 <----> Spindle analog out/ Spindle encoder in > > \ > > ----> 7i47 ----> Servos step+dir output > > > > > > Please let me know if this is the right approach and also guide to find > the > > right firmware because I'm not sure wich one I can use. > > > > Thanks as always and sorry for the long post. > > > > Leonardo > > > > _______________________________________________ > > Emc-users mailing list > > Emc-users@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
