Was able to get the Y codes:
Drill 1 Y11.1
Drill 2 Y11.2
Drill 3 Y11.3
Drill 4 Y11.4
Drill 5 Y11.5
Drill 6 Y11.6
Drill 7 Y11.7
Drill 8 Y12.4
Drill 9 Y12.5
Drill 10 Y12.6
Drill 11 Y12.7
Drill 12 Y13.0
Drill 13 Y13.1
Drill 14 Y13.2
Drill 15 Y13.3
Drill 16 Y13.4

And took pictures of some of the ladder logic screens. M101-M116 are the drill extend codes, M100 is the retract code. I've zipped them up: https://drive.google.com/file/d/0B16...it?usp=sharing