How do you use timer properly?

[3p1c w1n]

I've watched this video all the way through once and I understand how it works except how/where to paste the info from the DIO's to the main robot typedef. After watching the video I think I may want to put limit switches onto the manipulator. one is pressed at the top, when in idle state, and one at the bottom, to end the lowering state.
The video tutorial is from 2009 and the code is a little different in the main.vi.
Sorry if i didn't explain too well the question i'm having, it's ~7:45 into the tutorial. http://www.lvmastery.com/TipJar2009-02-08_1