I am not familiar with the Siemens board Henry is using, but it might
be possible to adapt the Galil board to Mach2. There is a function on
the DMC that allows an axis to follow input from an auxiliary encoder.
The aux encoder inputs can be configured to accept S/D signals.
Since the four axis board (DMC-1040) has eight encoder inputs and its
own cpu it should be possible to obtain true closed loop control under
Mach2. All that would be needed is some means of recovering actual
encoder positions from the DMC in the event of an estop (the DMC
retains register integrity during motor off conditions).
Doug
--- In mach1mach2cnc@..., Art <fenerty@a...> wrote:
Hi Henry:
Sorry, but it would be just about impossible. The Mach2 driver is
extremely tight, Servo-To-Go people took a look at the problem and
gave up.
