Building My First CNC Router, Looking for Advice & Other Info

[Neale]

The reason for separate digital and analogue grounds is that sometimes, for example, the BOB or motion controller will have separate power supplies for digital and analogue outputs and this allows you to keep them isolated. Not always needed but essential in some situations. Not as silly as it might look at first sight, but frustrating when the Chinglish manual doesn't really help!

[AlexDoran]

The reason for separate digital and analogue grounds is that sometimes, for example, the BOB or motion controller will have separate power supplies for digital and analogue outputs and this allows you to keep them isolated. Not always needed but essential in some situations. Not as silly as it might look at first sight, but frustrating when the Chinglish manual doesn't really help!

Ah that makes sense, another thing i found strange was i could not see anywhere in the Huanyang manual that stated what kind of signal the FOR input was expecting, so i also wasted another hour or so on that whilst trying to figure out the ACM / DCM grounding.

Alex