counter for boolean transition and reset

[kronus]

i am trying to design a counter that will

(a)count 1 for first high/true

(b) count 2 for second high/true

(c) reset to 0 after counting second high/true.

NI Software :
LabVIEW  version 7.1.1

I am pasting a reply from NI support engineer and also attaching a file of what I tried to do.

Thank you for contacting National Instruments.
I think this task is a great challenge. To solve it, I think you'll
need to use a while loop with a sift register and a case structure. You can use
the shift register to keep your count. Then once your count is equal to
two, reset the shift register to zero. I think that should get you squared
away.

[Svingen]

Hello

Here is one that does this. I'm not completely sure how and when it should be reset. My version resets when it reaches 2 (outputs zero for FALSE input) and is incremented again for TRUE input. For continous TRUE input, the output will only be 1 and 2. A zero is only seen when incremented to 2 and a FALSE input comes as input.

The counter_mod is the counter and the main is just to see if it worked.

[Svingen]

Here is the main.vi (it was only possible with one single attachment)