I'm not sure what your budget it, but the Mesa 7i65 card has a number of analog inputs.
It isn't cheap (compared to other Mesa cards) but rarely have I found good analog inputs that are cheap in any I/O system. Plus "cheap" is relative when you consider other I/O systems. I'm currently working with a 7i43-200 with a 7i65 and a 7i47 and it works well and has 8 pwms (I believe), 6 stepgens, and a number of encoder inputs, 8 analog inputs and only uses two 50 pin cables off the 7i43. Dave On 3/15/2012 10:56 AM, Scott Hasse wrote: > I'd prefer not to use the mesa encoder primarily because I want to use the > optical isolation I already have on the 7i37. Additionally with the firmware > setup I have (4 pwm, 4 encoders, 4 stepgens) and the 3rd 50 pin cable for io > like estop and limit I only have one Mesa-based encoder available with no > optical isolation. Ideally I'd like to run multiple analog inputs. > > Although if I go the weighted sum route I'd be limited by my io as well. > > It seem I must be doing something wrong with the software encoder though, as > i think it should easily be keeping up with the frequencies I'm sending, > > Thanks, > > Scott > > > > On Mar 15, 2012, at 2:50 AM, Viesturs Lācis<viesturs.la...@gmail.com> wrote: > > >> 2012/3/15 Scott Hasse<scott.ha...@gmail.com>: >> >>> with the frequency out going to an isolated I/O daughter >>> card input (Mesa 7i37 I believe) of a Mesa 5i23. The problem to me seems >>> to be the software encoder rate, which I believe I would hit with your >>> suggestion as well. >>> >> Any particular reason not to use encoder module right in 5i23 card? It >> will certainly count much higher frequencies and You will get rid of >> base-thread. >> >> Viesturs >> >> ------------------------------------------------------------------------------ >> This SF email is sponsosred by: >> Try Windows Azure free for 90 days Click Here >> http://p.sf.net/sfu/sfd2d-msazure >> _______________________________________________ >> Emc-users mailing list >> Emc-users@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/emc-users >> > ------------------------------------------------------------------------------ > This SF email is sponsosred by: > Try Windows Azure free for 90 days Click Here > http://p.sf.net/sfu/sfd2d-msazure > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------------ This SF email is sponsosred by: Try Windows Azure free for 90 days Click Here http://p.sf.net/sfu/sfd2d-msazure _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
