I really hate to ask this because I know there are endless posts on this subject, but I'm still having a hard time finding a simple straight forward diagram of what ports on the g540 connect to what ports on the vfd (2.2kw). Also whether or not I need an external 10v power supply going into the g540, or if the vfd supplies it. Also whether or not I need a relay. I don't need to switch between forward or reverse, just spindle on/off and rpm control. I seem to be finding a lot of conflicting info on how to get this done. I think I can figure out all the settings for mach3 and vfd based on what I've found, just need a straight forward wiring diagram. Does one exist? Any help is greatly appreciated