mike you are so close, address 31 is correct for FLK floor lockout inputs. check your i/o sheet listing, io address 33-48 is the card reader lock out input for floors 1-16 i believe just set these i/o for the appropriate input # of address 31, example would be io 33 set to 31 01 for input 1 of address 31 something like that, you can look at the other inputs for car calls etc, on your print to see what the io address input number would be and you will get the gist of it, remember to set parameter en-crc to the appropriate value depending on what you want, there are a few options on this parameter. this is what i can remember, it has been awhile, but i think it should help