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