Let's see if I can do this without much confusion.
S2 - off position -- 24VDC at S2-2, 5, and 11
S2 - on position -- 24VDC at S2-2, 5, 11, and 3 (have 24VDC at S2-6 when S7 is on)
S2 - start position -- 24VDC at S2- 2, 5, 11, as well as 3, 6, and 12 (no 24VDC at S2-12 when S7...