QUOTE "does a spindle speed call automatically switch pulley # base on set values in the spindle set up"
NOPE...not here anyway.
Probably could be made to with a fancy macro though.
Rays dept.
I'm not aware of any way to automate pulley selection through macros. Doesn't mean it can't be done, but I'm not aware of any "hooks" into the spindle control that would allow it. Possibly through a plug-in? But one thing I'm learning (painfully) lately is that trying to do things in Mach3 that are not commonly done, you're pretty much guaranteed to end up "fighting city hall". I've had a real time working around bugs and limitations in Mach3 to make the knee do tool length compensation. I hate to think of the problems you'd run into trying to make spindle control "smart".
What I do on my machine is run the G-code through a pre-processor that makes "optimum" selections of pulley, motor speed range, and VFD frequency, to minimize the number of pulley changes through an entire program, so I don't have to change pulleys every time I change tools. In most cases, I can run a whole job with no pulley changes.
Regards,
Ray L.