If you have a service tool you can program it into the elevator. If the elevator is a 2 or 3 the stop there is normaly an un used input in the cop. Might need to get a plug for the I/O brd. to use it. The prints should list any open I/O's in the cop. Then you need to turn on the crc (card reader car) in ocss. Should be under the security menu. I have to get a book to give all the details. If you do not have a tool, the relay setup always works. Let me know if you need the details.