I have used these cards extensively in the past, I actually attended a seminar on them in Chanhassen N.D.
They were writing their own S/W at that time (Acromill) and some plasma table companies used their PC controller.
Not sure if the later cards will run the old software which was DOS based and later a NT version.
I retrofitted two mills with the S/W, They wrote their own in house, and were on the way to being a leader until Parker took them over where I lost track of them.
I controlled a Mitsubishi VFD spindle C/W up to speed signal etc and S values.
At the time I was using them and Galil, The one thing I liked about the Acroloop was the internal PLC's as well as the CNC control.
The first software was Acrocut which is a router based CNC and later the Acromill which needed a little fine tuning to it when they were taken over.
I believe I still have the software although old hat now for DOS etc.
After the take over I went to Galil for motion systems.
Al.