Hey all i see that this post gets read alot so I'll update here.
Yes I am using Galil PCI 1842 econo series. Also configured an DMC 1739 Optima (ISA).
Glentek velocity Amps, SEM 4nm 4000rpm Tack Feedback. Loop closed with 5v TTL scales to the Galil icm 1900.
Galil WSDK tuning software. Full sized Kent Milling machine 3 axis.
Tried this on a whim while I was rebuilding Ballscrews. Worked so well I sold my Camsoft control and I will soon be selling my WINGCNC control.
Both of which were the only real Galil to Gcode Alternative. Machine is as accurate as ever with Camsoft running Mach3. Code is being generated by Camsoft and Alibre/Visual mill. With scale feedback ,the 10th bearing retaining ring with planetary drill grid matched perfectly with the first drilled and thats with 5 dif operations and tool changes.
My advice, if you can tune motors and have a Galil card, you can replace an 80's control with confidence and Mach3
David