Of course it works with Mach3(is it really worth to discuss?). We developed special motion plugin for PLCM series, so it works with Mach3 only.
As for known bugs, all bugs reported we usually fix in 1-2 weeks, and as far as internal firmware is easy to update, products are available without known bugs.
Key features are listed in the
Plugins section. Devices don't support backlash at the moment.
We'll inform community as soon as English manuals are available.