LED blinking in while loop

Hello
My application involves reading data off of a serial port at 26Hz. I am parsing this data in real time and writing statistics to file. I want to have an LED blink each time a file is written (I have a files being written in the following intervals: 1sec, 3sec, 15sec, 60sec, 10min). My problem is that the LED only stays illuminated for the single iteration, which is dictated by the speed I am reading from the serial port. Is there a clever way to have the LED flash for a standard .5 sec without creating timing issues?
Cheers!
CLA, CLED, CTD,CPI, LabVIEW Champion
Platinum Alliance Partner
Senior Engineer
Using LV 2013, 2012
Don't forget Kudos for Good Answers, and Mark a solution if your problem is solved.

Thank you for the reply, I create a new set of five files at midnight and append to them throughout the day at the given interval. As I understand it the property node causes the LED to blink at a set interval. I am looking to have the LED blink at the predetermined interval (1sec, 3sec, 15sec...) and stay illuminated for 0.5sec each time it blinks. I have the triggering for the blinking worked out so that it blinks when I want it to, the problem is that it is in a while loop that is executing very quickly and so the LED doesnt stay illuminated for very long when it does blink. I hope that this helps.
Cheers!
CLA, CLED, CTD,CPI, LabVIEW Champion
Platinum Alliance Partner
Senior Engineer
Using LV 2013, 2012
Don't forget Kudos for Good Answers, and Mark a solution if your problem is solved.

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Accessing Data within while loops

I have LabView 6.0
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If you need to post a VI, it is best to strip out those parts which do not have any effect on the problem you are facing. With subVIs, do a Save with Options..>>Development Distribution. This will create an .llb file with your VI and subVIs.
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Attachments:
CO_Detection_Monitoring_System_Modified.vi ‏60 KB

Hello Everyone-
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CO_Detection_Monitoring_System_Modified.vi ‏60 KB

How do I run two while loops independent of each other?

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Attachments:
2 Loops.vi ‏9 KB

bebesbabe,
This looks like a learning exercise, so I will not present a complete solution.
1. It is not polite to post to the Forum a VI which will not stop except by pressing the Abort button. The Abort button should only be used to stop a VI if something is wrong with the program during development. Add a stop button to the outer loop.
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Time not stopping with while loop

Hello,
I've attached my VI. I am having trouble with while loops.
I want to turn on LEDs. The first LED should turn on after 3s. The second LED should turn on after 5s. The third LED will turn on later.
The LEDs turn on based on the following conditions:
Case 0: numeric control > 10 then led_1 off, led_2 off, led_3 off
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Thanks in advance.
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Attachments:
timing.vi ‏15 KB

One of the problems is that your VI is not able to "breathe" because it is sometimes trapped inside inner loops that consume all CPU and step on each others toes. All you need is an single outer loop and a few shift registers.
May of your specifications are still not clear, for example what should happen to LED 1&2 in case #3? Should they remain in the state they are in, or should they turn off, for example.
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LabVIEW Champion . Do more with less code and in less time .
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Hi and Welcome to the Community!
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Go to Solution.

Robert Cole beat me to the punch, but here is an example of his solution.
- tbob
Inventor of the WORM Global
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Say thanks by clicking the Thumbs up icon in the post
Please mark reply as "Accept as Solution" if it solved the problem, so others can find it.
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Quote from: Deathstalker on 12-April-05, 00:14:59
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JB wrote:
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