boolean signal counter

[Teo_CF]

Hi

I found similar program about that i want but I failed to insert it into my VI, than...... I need a counter that indicate me how many times the boolean Led switch-on .

My VI is attached

Thanks all

[JÞB]

comming soon

[JÞB]

I modified your code by:

1. Added a shift register to maintain the current Count of "Siganl"=True
2. Added a boolean case structure to increment the value in the shift register only when "Siganl"=True
3. Added a numeric indicator to display the updated shift registers value.
4. Cosmetic changes to improve apperances - I assume you stripped outsome additional functions however you may want to review the style guide here

[altenbach]

Jeff, your code is not correct, because it generates multiple counts for each square wave. I think the OP only wants to count low-high transitions.

You need two feedback nodes (or shift regsiters), one for the boolean state and one for the counter.

Here's a quick modification, there are many ways to do all that.

Message Edited by altenbach on 01-23-2010 11:59 AM

[JÞB]

Your right!

I was counting iterations where Siganl was true.

I mis-interperated the post If the OP only wants to count transitions

[JÞB · Accepted solution]

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Jeff Bohrer wrote:

Your right!

I was counting iterations where Siganl was true.

I mis-interperated the post If the OP only wants to count transitions

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this works pretty well (reverse the inputs to Implies and init the sr T to count negative transitions)

[JÞB]

psstsame thing but fewer clicks

[JÞB]

Hmmmm Snippet cut off the invert

[altenbach]

I used the compound node instead of implies because I also needed to invert the output in this specific implementation. 🙂

(Of course if you use a case structure, you have a choice of what you do in the false or true case) 😉

[Teo_CF]

Thank you very much for helping me guys!!

See you next times!!