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Difference between 2 time in case structure

Hello Guys,

i want to know How long the LED ( pin 13 ) was on? in this format (Minute:Second). When i click on the button, start counting the times until when i click again. i need to calculate the 2 times between the True and False case structure. 

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Message 1 of 21
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cross-posting is ok, just mention it please

 

https://lavag.org/topic/22890-difference-between-2-time-in-case-structure/


We have two ears and one mouth so that we can listen twice as much as we speak.

Epictetus

Antoine Chalons

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Message 2 of 21
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Hi amir,

 


@amirdifraxe1 wrote:

When i click on the button, start counting the times until when i click again. i need to calculate the 2 times between the True and False case structure. 


Use a shift register to hold a timestamp. Set the timestamp in one case and subtract in the other case…

 

Btw. we cannot edit/run/debug images with LabVIEW!

Best regards,
GerdW


using LV2016/2019/2021 on Win10/11+cRIO, TestStand2016/2019
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Message 3 of 21
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Thank you Dear, i will test it 

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Message 4 of 21
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thank you , i have attached my VI. if its possible for you can you do it like example for me ? because when i subtract it between two case error me. 

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Message 5 of 21
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Hi amir,

 

many of us aren't using the most recent LabVIEW version because of changes in the license scheme, so you better attach a downconverted version of your VI! (File->Save for previous)

 

Suggestion:

There might be simpler solutions… 😄

Best regards,
GerdW


using LV2016/2019/2021 on Win10/11+cRIO, TestStand2016/2019
Message 6 of 21
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oh sorry Dear, i forgot it. i have attached Version 2016. 

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Message 7 of 21
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Excuse me Dear, what is the name of these components? 

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Message 8 of 21
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First one is "feedback node", under Programming -> Structures

Second one is "Boolean crossing PtByPt.vi", under Signal processing -> Point by point -> Other functions

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Message 9 of 21
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Thank you Dear

could you please to explain these schemes? 

 

when i press the button(button=1), the input of crossing will be false-True then, on the selector, select True and start timing.  but on the 2 selector and feedbacks i don't understand whats happened.if i know the concepts of this method will be ok. 

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Message 10 of 21
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