How to stop a elapse time

Hi,
I have an elapsed time inside a while loop and I want stop it (the elapsed time) when the user press a button.
How can I do it?
Thanks,
ToNi.

Here is a vi that I created for demonstration of how to keep track of running time with the ability to pause and continue by pressing a switch. Perhaps you will find it useful and can modify it, or use some of the code in your vi. If you want to control the pause and continue from another vi, you will have to pass the reference of the pause switch to this vi, and change this vi to use the reference instead of an actual pause switch. Hope this helps.
- tbob
Inventor of the WORM Global
Attachments:
PauseTimer.vi ‏41 KB

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記得用sequence以確保他會在回區尚未開始運作前先記錄時間
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Hello and welcome to the forum,
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Attachments:
DB6483 Test.vi ‏2932 KB

I have a similar problem ,
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try this code:
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Disk Reads                                  203,832        1,151.6    25.1
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Cluster Wait Time (ms)                            0            N/A     N/A
Application Wait Time (ms)                        0            N/A     N/A
Concurrency Wait Time (ms)                        0            N/A     N/A
Invalidations                                     0            N/A     N/A
Version Count                                     1            N/A     N/A
Sharable Mem(KB)                                 31            N/A     N/A
SQL_ID akg45a750sh0u
DELETE UNBILLED WHERE (MSG_ID, MSG_ID2,SPLIT_ROW_NUM) IN (SELECT MSG_ID,MSG_ID2, SPLIT_ROW_NUM FROM BILLED
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Plan hash value: 3879210699
| Id | Operation                            | Name                          | Rows | Bytes | Cost (%CPU)| Pstart| Pstop |
|   0 | DELETE STATEMENT                     |                               |       |       |     1 (100)|       |       |
|   1 | DELETE                              | UNBILLED                      |       |       |            |       |       |
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|   5 |    INDEX UNIQUE SCAN                 | UNBILLED_PK                   |     1 |    47 |     0   (0)|       |       |
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How to get one elapsed time for two loops OR MORE

I'm calculating the time spent to maintain a value "elapsed time" for 2 things(A and B) differents,what to change in order to have 1 "elapsed time" not 2 ,so the value of "elapsed time" is caculated the moment the user maintain the value of A and B
Attachments:
item n4 complet.vi ‏3850 KB

My VI is already attached
Elapsed time 2 is calculated when the user starts the test of "variometre",maintien 3 when the user keeps the pointer of the variometre in 7 for 10 seconds
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that's good if i wanna each test alone,but now the complication of this one is to maintain the 2 values 7 of the variometre and 30 of the horizon in the same time during 10 secs.that's why i want to have just 1 elapsed time and 1 maintien,because the the 2 tests will run on parallel then the elapsed time must start and when the user realises the 2 conditions in the same time,the maintien must begin counting.
Attachments:
item n4 complet.vi ‏3850 KB

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Hello Folks,
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Hi Luiz,
Status needs to be selected in the conditions. Follow the below steps
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Elapsed Timer in secs

Hello,
I would like to continuously update the elapsed timer indicator every second. I do not understand why the program is not working? Can you offer some assistance to help me display the elaspsed time (in seconds).
Thanks,
hiNi.
P.S. I know that there is an elapsed timer express VI, but I would like to know how to show the elapsed time without the express VI. THANKS!
Solved!
Go to Solution.
Attachments:
Elapsed Timer.llb ‏27 KB

Why every second? Why not with each iteration of your loop?
Since your loop iterates every 100ms, you could make a counter using another shift register. When the counter reaches 10, get your elaspsed time.
Give these VIs a try to see if they do what you want.
There are only two ways to tell somebody thanks: Kudos and Marked Solutions
Unofficial Forum Rules and Guidelines
Attachments:
Elapsed Timer.llb ‏23 KB

How to stop a while loop after certain time using Elapsed time vi

how to stop a while loop after certain time using Elapsed time vi.

Hi Frankie,
Just place the Elapsed Time VI inside the WHILE loop, and wire the 'Time Has Elapsed' output to the conditional terminal in the lower right corner (which should be set to 'stop if true' by default).
In the future, please post your LabVIEW questions to the LabVIEW Forum. You have a much better chance of getting your questions answered sooner, and those answers can then help others who are searching the LabVIEW forums. Thanks!
Justin M
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Starting and stopping Elapsed Time

I have some code in LabVIEW 8.2.1 I am writing for Qual test with a customer. The basics of the test are the following: monitor and record pressure (thru transducers), temperatures (fluid and ambient), and monitor the opening and closing a valve. The valve has two light switches orientated in such a way, that mechanical counters will count a cycle when it is fully closed to open to closed.
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Attachments:
elapsed timing vi.doc ‏45 KB

Hello Chadius,
Thanks for posting,
I took a look at your code this morning. We at NI recommend using varibales as one of the last resources when trying to pass data out in cases where this is rseally necesary, when looking at your code I realized that the variables to pass data are not needed and that actually there are some misconceptions about the functionality of the vi funtions, do not be ashamed that is totally understandable when you are new to a concept and more understandable if you are new to labVIEW.
Before proceeding with the code I would like to encourage you to check the Getting started with LV It gives you the basis to start programming in labVIEW and helps us understand better how LV executes.
There is also a lot of good help loaded in Labview that can help us determine what to use and what is expected of each function, you can access this by pressing ""CTRL+H" and accesing the detailed help when hovering over a specific VI and clicking detailed help.
Then if you are a new user to labview and would likely use labview for long term development I will suggest the training.
Now, getting to your code I can see that you are doing a bit more code than what you actually need, so for instance:
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-we can also use less while loops so the part where you write to the variables can be done in the same while loop on the right.
-Instead writing to the variable and reading from that same variable you can just wire a cable so you have the same data
-You can use the error wire out/in of the functions to control code execution.
Last but not least, I am asumming here that this application you are coding is most likely to be a state machine where you are making a choice depending of the inputs you have, If "A" then "B"
This is an example of a simple state machine based on user input, you can change that input to be an event, a trigger etc.
Hope this helps,
Luis
Application Engineer
National Instruments.
Attachments:
LV_Getting_Started.pdf ‏918 KB
This way looks better.JPG ‏20 KB
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How to get elapsed time in case struture?

I'm trying to get Elapsed Time VI to work but couldn't figure out how to use it properly.
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State1 uses VISA read to read a byte and check if it is the Start of Frame. If TRUE, goes to State2. If FALSE, loop back to State1 and try again.
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How to stop a elapse time

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