From the looks of it you just take a wire from the UP/ARC/DWN connections on the THC device to a spare inputs on the TB board.
The COM will go to the com or GND pin on the TB.
Then in the control software setup the THC inputs for UP/ON/DOWN to the same pins from the TB.

The + & - are power the THC device needs so come from a separate supply which by the looks of it can be anything between 5 & 35V I'd use 24V has it will better handle any noise issue's and quite cheap to find.

That link to the TB doesn't show pin outs so can't help with telling you pin numbers unless you can find a link to the manual.?