Rev 1 G540 here and i'm a complete newbie with a completely fresh built machine. DIY power supply 45v 11a - 3No 282oz Nema 23's - should be 4.2a but they are restricted to 3.5a..... followed the instructions and ......... it works fine, first time no drama's.
Set Mach3 up in mm's and had to do some thinking setting the steps per as my ballscrews are 5/8" 5tpi but it works fine!
I would post the file but I ain't got power in the garage and its a major ball ache to do it just to retrieve a file. Next time i'm out there i'll try to remember