On 2010-11-27, Lloyd E. Sponenburgh lloydspinsidemindspring.com wrote:
"RogerN" fired this volley in
:

You
could put a limit switch on the table so that when the machine is in
"Park" or "Tool Change" position it kills the power to spindle and
turns off the coolant. As soon as the program runs and moves it, the
spindle turns on and the coolant, if selected, comes on.

The R2E4 is already set up in the control firmware to kill the spindle if
the machine hits any of the limit stops (all in software, no switches).
However, the spindle won't turn back on when the table is moved from the
limits -- has to be done manually.

The spindle is _logic_ controlled, not "electrically", so there's no
reason why a spindle control would be a big project -- but not on the
existing control system. I'm not ready to disassemble and reassemble the
68K software that runs it. I'd rather just jump to EMC^2 in one step.

LLoyd

Since your current control is working, I would personally expect that
selling it will provide you with enough money for EMC conversion (PC
and drivers).

i