I am fairly new to the cnc world and recently purchased a CNC from China. I had many issues when working with the new CNC so I decided to convert from the original setup to a more user friendly mach 4 setup with ESS and c11g BoB. I have the xyz motors all configured properly. The problem I am having is with what I think is the VFD or in mach4 itself. I have it setup very similarly to the diagram shown here: https://www.cnc4pc.com/pub/media/pro...s/WS_90_V2.pdf. The only problem we are having is that we can turn on the spindle but we cannot control the spindle RPM. My assumption is that I am missing something in mach 4 itself but I am unsure as I am fairly new to the software. Any help is much appreciated.