I can confirm that with the Mesa 7i33 card an open collector encoder will work but needs pull-up resistors, I used 1k to pull up to 5V, for the positive encoder inputs. For a 100ppr quadrature encoder that is so far working fine.
With respect to the encoder Z pulse, if I had a Z pulse three times per spindle revolution would a software solution to ignoring every two out of three be feasible? My spindle pulley is 75 teeth, and a 25 tooth encoder pulley would be convenient. I seem to recall the Mesa refresh rate being tied to the servo thread, and I am guessing this might impede a software solution. Thanks! Scott On Sun, Nov 11, 2012 at 3:30 PM, andy pugh <bodge...@gmail.com> wrote: > On 11 November 2012 20:00, Scott Hasse <scott.ha...@gmail.com> wrote: > > > I plan on integrating the spindle control to be able to thread, but I am > > wondering if the Z pulse needs to be strictly once per chuck revolution > > Yes, it must be once per spindle revolution. The system will always > start the threading pass on the index, and if that index happens at a > different point in the spindle revolution, then so will the thread. > > > Further, I am wondering the best way to interface a 12-24V open collector > > encoder with the Mesa 7i33 servo control card. > > That's one for Pete. > > -- > atp > If you can't fix it, you don't own it. > http://www.ifixit.com/Manifesto > > > ------------------------------------------------------------------------------ > Everyone hates slow websites. So do we. > Make your web apps faster with AppDynamics > Download AppDynamics Lite for free today: > http://p.sf.net/sfu/appdyn_d2d_nov > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------------ Monitor your physical, virtual and cloud infrastructure from a single web console. Get in-depth insight into apps, servers, databases, vmware, SAP, cloud infrastructure, etc. Download 30-day Free Trial. Pricing starts from $795 for 25 servers or applications! http://p.sf.net/sfu/zoho_dev2dev_nov _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
