I want to add spindle control from the board to a VFD which will allow me to control spindle speed from Mach3?

I can not find a manual for this board but I found a manual for rev 1.8 but no instructions to add spindle control from Mach3.

The board has 6 pins allocated to spindle but can not figure out how it all connects up.

Any help is appreciated.

Richard

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