Hi everyone,
i changed my Optimum Lathe to CNC using closed loop stepper motors for X and Z from Stepperonline and a Servo for the spindle, also from Stepperonline. Electronically i use the MB3 breakout board with a ESS Smoothstepper. So far all works including thread turning. So all axis + the spindle can be controlled via Mach 4 without problems.
BUT: G96 doesnt work. The machine simply ignores it. The G code comes from Fusion 360 and looks ok to me. Diameter is set correctly. I also tried some code like this in manually:
G0 G54 G18 G40 G80
G0 X40 Z0
G97 S1000  M3 (first set constant speed)
G50 S3000 (set maximum rpm for G96)
G96 S90 M3
G01 X10 F10 (now the rpm should increase i think)

==> Result: The rpm stays constant at 1000.
What am i doing wrong - what do i need to do to make it work?
Thanks for your support!