Counting a HIGH signal

[LNH02]

Hi.

I am continuously reading a digital input signal in a while loop. My application consists of a normally open switch that when closed the input is a high. I would like to increment a counter to track each time the switch is closed. The problem is since the switch is mechanical, the counter increments more than once before it is actually released. How do I code it so that when I get a high I increment only once and increment another only on the next high and so on? 

Thank you in advance

[LNH02]

Hi.

I am continuously reading a digital input signal in a while loop. My application consists of a normally open switch that when closed the input is a high. I would like to increment a counter to track each time the switch is closed. The problem is since the switch is mechanical, the counter increments more than once before it is actually released. How do I code it so that when I get a high I increment only once and increment another only on the next high and so on? 

Thank you in advance

[Gregory · Accepted solution]

You can use this VI to define the direction of crossing you are looking for:

http://zone.ni.com/reference/en-XX/help/371361H-01/ptbypt/boolean_crossing_ptbypt/

[Gregory]

duplicate post:

https://forums.ni.com/t5/LabVIEW/Counting-a-HIGH-signal/m-p/3749003/highlight/false#M1055532

[LNH02]

Gregoryj,

Many thanks!!