Question about Spindle Control and Planet-CNC output board setup YL620

[pwogger]

I am following Planet-CNC's Blog about how to setup my machine with their output board (https://planet-cnc.com/controlling-s...-output-board/) but of course my VFD is a little different and I don't fully understand electronics. The 5 connections I need to make from the output board are FOR, REV, DCM, VI, and ACM. I can find FWD and ReV, but I am unsure of the DCM, VI, and ACM. I will attached the pictures from my output boards book. I have a YL620 Thanks for your help

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[PlanetCNC]

Probably in you case:
DCM -> XGND
VI -> VI1
ACM -> GND