Re: servo board

--- In CAD_CAM_EDM_DRO@yahoogroups.com, Kim Lux <lux@d...> wrote:

> I'd love to have a servo drive system that still controlled the

servo in

> a closed loop/step-direction fashion, but that had a USB connection

to

> each controller so that they could be queried for their position.
>

In the "for-what-it's-worth-department": Art at MACH2 has been
working on including encoder feedback into MACH2. It currently will
support positional reading on a separate set of DRO's from standard
quadrature encoders. I am look at using it as a handwheel jog
control. I think if you expressed the reasoning of having an open
loop encoder feedback while using a step and direction motor control
like the Gecko's or Rutex that Art might be receptive to inclusion.
Heck, it may already be in there and I missed that thread. I
understand the issue of having to re-position the cutter after
a "situation". It might be possible for Art to maintain absolute
postion and do a slight backup and restart in the event of an e-stop.
This sounds like a good problem for a software solution. He is
making a lot of the objects in his code available for custom
modifications.