How to work around dataflow order in front panel simulation?

I'm on the steep part of the Labview learning curve. The attached vi is my attempt to simulate the user interface of the product I'm working on. I'm posting because every workaround I dream up to deal with Labview's dataflow architecture results in more complexity. I think I'm putting bandaids on top of bandaids!
If you run the vi you should see what I'm trying to accomplish. The 5 Mode Select buttons send the machine into one of 5 available modes, implemented with a case structure. Delay blocks within the cases simulate how the machine will react. Random number generators simulate occurrence of fault conditions. RS flip flops simulate momentary contact buttons.
Some rules:
- pushing a mode button should instantly switch the machine to the selected mode (my vi doesn't work that way).
- probe test mode should execute just once. My vi simulates this one-time operation by latching the test result - kludge!
- if a fault occurs, it can only be cleared by "power cycling" (stopping and restarting the vi)
Questions:
1) is there an simpler way to simulate momentary contact buttons?
2) is there a simpler, better way to select the cases? I'd like to automatically go from Test to Stop after a single execution of the test case.
3) what is an efficient way to initialize the mode indicators? They 'remember' their last state through a power cycle.
Thanks for any and all insight!
Jeff
Jeff
Climbing the Labview learning curve!
Sanarus Medical
Pleasanton, CA

An alternative method for the UI is to use the radio buttons control. You can customize the standard one to use the square buttons, and I believe this would give you the equivalent effect that you're doing with the lights. See attached VI along with customized control. For the customized control I took a standard radio button control, opened it for editing, and replaced the circular booleans with square buttons. The radio button control is an enumeration, with the enumeration items being the labels of the individual controls (not the text inside the buttons). The control is set so that the labels on the individual square buttons is not visible.
Attachments:
Event Structure Example2.vi ‏45 KB
Control 1.ctl ‏6 KB

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How to work around dataflow order in front panel simulation?

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