Hi,
I don't believe the plugin for the UC100 supports THC in Mach4.
The only Mach4 capable controller that I am aware of that has support for realtime THC control is Vital Systems HiCon board. I may well be wrong here, I'm sure
that others will chime in if they know of other THC capable boards.
For THC to be effective it nees to happen very quickly, responding in tens of microseconds and must therefore be done by the hardware controller. Mach4 running
on a Windows PC cannot get close to that sort of response but perhaps tens of milliseconds, about 100-1000 times too slow to be truly effective.
Hardware manufacturers of Mach4 ready boards are where they were about five or so years ago with Mach3, they had some hardware controller features enacted but not all.
CNCDrive, the manufacturer of the UC100 and its sibling UC300 have only had a Mach4 plugin for a year or so. I imagine it would be a big challenge to develop THC support
AND support their existing Mach4 customers in that time frame.
Craig