It looks as though P1-3 P1-4 are the input regardless of the type of command, it also appears that the type of command is configurable through the interface program, do you have the program? If so I would suggest running it and see what can be set up. It looks like you will need it in any event.
You might be able to find a 1-800 number on the web to call, I found in the past Rockwell are very difficult to contact for support.
Al