How to create a boolean that when it's ON, it's on for an iteration then switches back off

[malmureeh]

Hello everyone,

I couldn't explain it well in the title, but I'm trying to control a device that only wants a single click to switch. For manual operation, a latched switch like OK button would do, but I'm trying to automate it.

For an example, if we have a numeric control, and a "Equal to?" boolean connected to it with an indicator. e.g (If number is = 10 then TRUE) The indicator would stay ON until that number changes.

But when I'm trying to get is, the indicator switches on for iteration then off. Plus, when I change the number to something is, I want the indicator to also switch on then off.

If this is solved, it would help make the device receive a SWITCH signal to turn on once an option #1 is selected, and when I change the option it will receive another SWITCH to switch option #1 off.

Your help is much appreciated!

[GerdW · Accepted solution]

Hi malmureeh,

you want to detect edges of a boolean signal, like rising edges.

There's a ready-to-use function available: BooleanCrossing!

[JCH_26]

Hi Malmureeh,

My name is Jonathan & I work within the Applications Engineering Department at NI in the UK. From your post I interperate that you want an LED to flash at a specific iteration?

Below is some code you could try to implement yourself:

. 

I hope this helps & let me know how you get on.

Cheers

J

[malmureeh]

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@GerdW wrote:

Hi malmureeh,

you want to detect edges of a boolean signal, like rising edges.

There's a ready-to-use function available: BooleanCrossing!

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Hi GerdW,

Thanks alot for your fast response and help! This is exactly what I've been looking for! 

I wondered why this function isn't available since it would be essential in some fields, but foruntately it is available!

I've attached the program that I tested Boolean Crossing on.

Best regards,

malmureeh

[malmureeh]

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@JCH_26 wrote:

Hi Malmureeh,

My name is Jonathan & I work within the Applications Engineering Department at NI in the UK. From your post I interperate that you want an LED to flash at a specific iteration?

Below is some code you could try to implement yourself:

. 

I hope this helps & let me know how you get on.

Cheers

J

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Hi JCH_26,

Thanks for your help! But this wasn't what I was aiming for. The problem has been solved.

I appreciate your quick response! 

Best regards,

malmureeh