run once inside timed loop

[icemaker]

I have a timed loop that monitors equipment. Whenever there is a fault I have it send a notification email. My problem is how to stop it from sending email every single time the time loop is executed. I tried placing the send email inside a for loop but quickly realized that the entire loop itself is reiterted. Any help is much appreiciated.

[Davidek]

Hi icemaker

I'm not really sure what you mean. Wouldn't a case structure be a solution?

Could you post some code so we can see what you are doing?

Best Regards

David

NISW

Message Edited by Davidek on 10-02-2009 09:58 AM

Message Edited by Davidek on 10-02-2009 10:00 AM

[Rod42]

This is very similar another enquiry today...

One possibility: Add a boolean shift register to your loop, initialised outside the loop. When an error occurs and you send your message, set the boolean to a value that means you've sent your message. Your "send a message" should avoid sending a message if the flag says you've already sent one.

You may also want some means to reset the flag so you can send mesages again. Maybe make the shift register hold the time you last sent an error message, so you can send another one after a certain time has elapsed.

Just a thought.....

Rod

[Davidek]

Ahh, now I get it. Just one email per error, good morning

Rod's suggestion is very good, you should give it a try.

Best Regards

David

[icemaker]

I am going to give Rod's suggestion a try. In the meantime here is a snippet of my loop. Still new to labview so any suggestions are greatly appreiciated.

[Broken_Arrow]

In your ap, what good is a For Loop that runs once?

[icemaker]

That was an attempt at solving my problem of non stop emails but I soon realized that would not do anything.

[Broken_Arrow]

Have you fixed your non-stop emails yet? You screen cap doesn't have the solution (shift register).

[GovBob · Accepted solution]

You might also consider using  the First Call? primitive under the sychronization pallette.

[icemaker]

Looks like the first call will work for me.