As far as the difference between the two VIs I am not sure which works correctly for your application. If you rotate our 2 graphs around you will notice that thet are taking different paths. When mine hits the end of an x,y plan it simply increases z by 1 and reverses the x,y scan. yours looks like it always starts the x,y scan at the opposite x. So yours finishes the z=0 scan at x,y of (9,15), however it starts the z=1 scan at (0,15)
All my boolean logic does is decide whether I am counting up or down. The 2 booleans are for whether I am counting up in x or in y. So for z=0 the y boolean is true or count up. In the mean time the x boolean switches every time I increase y. So for y=0 its true and therefore I scan up in x. However after that 1 line I toggle the boolean. now I know to count down in x. So at y=1 I count down in x. I continue this toggling for the entire plan. Now when I reach the end of the scan I toggle the y boolean and the x boolean got toggled as well.
So for the last scan I was increasing y and x. I just toggles the 2 so i will now count down on x and y. Therefore I follow the exact same path backwards.
Let me know if this clears it up any.
