Does anyone know if you can adjust the door operator on a TAC 20 with the ims interface? I have never worked on a TAC 20 before, and a friend was inquiring about this. We had a class a couple of years ago, and vaguely remember something about communicating to the door operator by plugging into door operator directly or through the controller interface. I thought it had to do with the RS232 port or the RS485 port. I think I remember the instructor saying to be careful where you plug in the interface cable as plugging 232 cable into 485 port would cause trouble. Maybe there are two different door operators with different interfaces, I don't have a manual and would be grateful for feedback, thanks