Generating unique random number with a Boolean signal on an RT target

Hello, this is my first time asking your question. I apologize if I post this question in the wrong Council.

[What I'm trying to do]

I am stable heating and cooling in an experimental space that I (with cRio9024).

And I'm putting a different experimental condition in space based on the function 'random number '.

'Different experimental conditions' sense different combinations of Tind, Twat_s and mdot (refer to the attached VI).

For example, if I get the Boolean TRUE signal.

I should have a set of [Tind, Twat_s, mdot] = [21,14,0.05], and IS this set of numbers until this Boolean signal goes to FALSE.

And when the signal passes to the TRUE once again.

I should have a different set of [Tind, Twat_s, mdot] = [24,16,0.15] for example.

[I]

Problem I am with my code is that,

When the VI is running, the random number remains the same as the Boolean signal is set to TRUE.

From what I tried so far for the last couple days, using 'the event structure' was the message more concerned that I found,

However, LabView help tells me that "structure of the event" on the objectives of the RT do not support the events associated with the user interface such as the façade of VI or controls panels.

I would therefore ask a quick help, since my knowledge of LabView is exhausted at this point.

This is so the part where I want to generate random numbers, WHEN this structure case is TRUE.

convert whole numbers, random numbers

Use them as a table index,

while I can choose conditions from radom to the given set of conditions.

Once more, I want to do is,

generate a SINGLE random number series when the structure above is TRUE.

Hope I have developed quite clear.

I'm appreciated for any kind of advice.

Thank you!

You just need to store the Boolean from the previous run. Then the logic would be (I'll call her Boolean previous B_prevand current boolean B):

If B AND B_prev > don't generate new values

otherwise if B > generate new values

Edit: to store your Boolean value, you can use a feedback node, or a loop with N = 1 and a registry change.

Tags: NI Software

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