There’s a parameter (ELI) that changes between wired limits and the hall affect switches on the board. I would try plugging the UIT (HL1 board) directly into the door board and see what it says if anything. That Smartech II interface boad is talking to the door over CAN. If that works and the board is new enough you can load an appropriate profile from the Config menu then see if it works. Otherwise, I would load V2R23 generic and a fresh profile through Hyperterminal.
