Hello Warwick...
The six cores i have wired up with the full 6/7 cores inc ground so same as you, i have all avenues covered.

Just the gcode and scripts is what i am struggling with.

Scoured the internet and cant find a dummies guide to floating heads etc as they all have different pin out names etc.

The proma you have, has quite a few explanations online with pictures but mine has none or very few with minimal explanation.

I would like a schematic of someone else's to scrutinise and once i have mine working, i will post mine on line with pictures for other people to look at as a picture tells a great story if you know what i mean.

I will keep experimenting untill i get the thing working....LOL

Cheers Tommy