The keycodes on the floppies are in a .kcd file format.
Your best bet is get in touch with your vendor and ask them to download the keycodes for you. That way you have it in the original format.
If you attepmt to pull it out of the PBX - not sure that you can on the larger system, its just going to show you the raw keycode data, which does you no good, unless you plan on entering them manually.
Unlike the 11C and 1KS system, the keycodes on the larger system is something like 20 lines, with 16 characters per line long.