does anyone now what config to use for the superpid running mach3 through a g540
can get spindle to turn on and off but cannot seem to change the speed of the spindle in mach 3 help please

There's a huge SuperPID thread at CNC Zone with help from the designer.
http://www.cnczone.com/forums/diy-cnc_router_table_machines/112658-super-pid_new_low-cost_router_speed.html

Do you have a V1 or V2?
On Ports and Pins, Spindle TAB, do you have "Use Spindle Motor Output" and "PWM Spindle" checked? Do you have a pin setup on Motor Outputs for the spinde Step pin, which is used for the PWM?

i have v2 configed for mach3, i got all of that done i have wired it according to g540 wiring on page 25 on super pid instructions it is set up OK i think. it does 5000rpm or 30000 rpm only. when i calibrate spindle using auto cal it work perfectly

when i calibrate spindle using auto cal it work perfectly

What works perfectly?

You can only calibrate the spindle if you have the tach input connected to Mach3. And it's not recommended to do that with the Super-PID, as it's not needed.

Try deleting the file linearity.dat in your Mach3\macros\yourprofile\ folder, then restart Mach3 and see if it helps.

If not, post your .xml file. You either have a Mach3 setup issue, or possibly a wiring or parallel port problem.

i found something on the cnczone that has worked