One stop button to control multiple loops?

I want to use on stop button to stop mutilple while loop at the same time. But if I put the stop button outside the while loop, it is functional.
Is there any way to do that?
Thanks

cguan wrote:
But if I put the stop button outside the while loop, it is functional.
I don't think "functional" is the right word here.
I often use event structures, e.g. as in my example posted here. This allows you to keep latched mechanical action for the stop button.
For a queued state machine, you would use the error to stop the loop that waits for the queue. Here is an example for that.
The most appropriate method really depends on the situation. Can you post some code?
LabVIEW Champion . Do more with less code and in less time .

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Need to stop with only one "stop button"

I have two vi's. One that monitors temperature and the other sends a D/O signal. They both work fine on there own but when I merge them into one vi I have to press both stop buttons for the vi to stop. I would really like to only have one stop button in the final vi.
Any suggestions would be appreciated.
Thanks in Advance,
Jason
Attachments:
dig_output_with_temp1.vi ‏127 KB

Jason,
You can edit the stop event case to use the same stop button as the temperature loop. Right click the event structure and select "Edit events handled by this case", then select the control named "stop (F)". Then you can delete the other button labeled "stop".
-Chris

One pair of radio buttons to control multiple text objects - Designer 8.0

Greetings - a big thank you in advance for any assistance. I have often found answers to my problems on this forum, but have been unable to find an answer to the following.
The short of it - is it possible to make a pair of radio buttons control the visibility of multiple text objects with the same name(I have had success in manipulating only a single text object with one pair of buttons)?
The long of it - I am trying to make a form bilingual based on the value of a radio button group to control the visibility of the text object in the selected language. When the user selects the language they wish to see, all the text objects in the form switch to that language. I am working with a dynamic PDF.
I have succeeded to a very limited extent in manipulating one text object by overlaying text objects in both languages, setting one object to "invisible" as default, and controlling that text objects visibility with the following JavaScript in the click event of the radio button group:
----- form1.#subform[0].ENG_JPN::click: - (JavaScript, client) -------------------------------------
if (ENG_JPN.rawValue == 1)///1 equals the value of on
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The problem is I need to manipulate the visibility of all text objects with the same name on the form with a single radio button group. I have tried writing the code as one does for the sum of a repeating field, ie. English[*].presence etc. however I get a C++ error in preview.
Any ideas are greatly appreciated. I am truly stumped - thank you for your time.

To access objects with the same name you need to deal with occurance numbers. If your object is called TextField then the 1st occurance will be TextField[0], the second occurance will be TextField[1] etc.....
The issue is that the [] in javascript are interpretted as an array element so you have to use the syntax: xfa.reolveNode("string") to get to your object names. In your case you would use:
xfa.resolveNode("TextField[1]").presence = "visible"
This string syntax allows you to use a var to hold the index number and is very useful with for loops where you want to set large numbers of objects. So if the index was held in the var i then your syntax would be:
xfa.resolveNode("TextField[" + i + "]").presence = "visible"
If the objects are in a repeating subform then the occurance numbers are on the subform and not the object. You can always get the expression to use by app.alert(objectname.somExpression). This will return the expression that you need to create.
Make sense?

How to use one boolean button to control many boolean buttons?

I would like to create a LabView control interface with boolean buttons.
As my attachment picture shown, there are four boolean buttons.
The button1 is the main power, if I press ON button1, other three
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booleans.bmp ‏722 KB

Controls and indicators function as variables. In a text based language, you could just write the name of the variable again. In LV, since each control only has one terminal, you need local variables to do this. To create a local variable, right click on the control and from the popup menu select Create>>Local Variable. You can have a local as read or write. Create a local for each of the buttons and wire the data coming out of the first button into the locals.
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How do I use two DAQ cards in one Labview code? Current I'm getting error " error 200558 occurred at DAQmx Create Channel.vi. One task cann't contain multiple independent devices". Can someone help me?

The two DAQ cards are NI PCI-6070E & NI PCI-6052E. The Labview I'm using is labview 7 Express and the Window system is Window XP. I'm using NI SCXI-1000 chasis and SCXI-1102 & 1102B two modules plus a feedthrough SCXI-1180. 1102 is connected through SCXI-1349 cable to DAQ card 6052E while 1102B is connected through SCXI-1349 cable to DAQ card 6070E. SCXI-1180 is connected to 6070E through SCXI-1349 adaptor on the back of 1102B.

Sarah, thank you for replying my question. It seems that I'm making progress everyday (smile). I'm able to run the test using both daq cards in my code now. But as I'm moving forward, I'm getting new questions too. How do I use one STOP button to control both tasks and how can I save data into one single file?
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Attachments:
DAQmx_Task_Example_plus_voltage_2.vi ‏416 KB

Ending time delay with stop button

I am trying to create a stop button to control multiple vi's at once. A problem is that my subvi has a time delay. To solve that problem the time delay is divided into multiple time delays so that I can interrupt it with a stop button.I am building off of Al S's example on the forums found here. I tried adding a global variable but it is not working.
Any ideas? Thank you
Solved!
Go to Solution.
Attachments:
Delay.zip ‏19 KB

I wanted to thank everyone for their incouragement to learn notifiers. So I finally did and notifier were the solution I was looking for. I found help from DianeS with her 1st post here and from WayneS1234 with their 1st post here.
I am posting my code to show what I learned. I think it might help someone else. Note that this is like a block diagram with working notifiers of my larger project that I am working on.
Attachments:
Main VI Notifier.vi ‏21 KB
sub VI Notifier.vi ‏14 KB

How do we link multiple stop buttons to make one master stop button?

I am building a program that has multiple loops running simultaneously. How do I create a master stop button/link the multiple stop buttons to one? Right now I have 14 different stop buttons and would like to control them all with one main stop button, that way I won't have to hard stop the program, and for when we compile the program into a stand alone running program, the user will be able to have a master stop button available? Any help would be appreciated. Are there any available tutorials?

You can use a local variable to do that, but remember, use local only if you have to. For the switch, remember to change the mechanical action to switch until released.
Yik
Kudos and Accepted as Solution are welcome!
Attachments:
Example_VI_BD.png ‏3 KB

Stop button reference

Hi, I have a VI with several case-structures and while-loops and nested while loops ... and ONE stop-button. i want to stop the loops with this button. how do i do that?
i know that i could do it somehow with a lokal variable and references to it, that are connectet with the stop-terminals. i attached a small screenshot where you can see how i tried it, its not working ("Wert" = "value").
Johannes, Grundig, Germany
Attachments:
VI_stop_referenz_problem.gif ‏5 KB

Hello Johannes,
you are using a Global "stopp" button. So just use this
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See example pic: control is in the upper left corner, several locals all over...
Best regards
Gerd
Best regards,
GerdW
CLAD, using 2009SP1 + LV2011SP1 + LV2014SP1 on WinXP+Win7+cRIO
Kudos are welcome
Attachments:
Image2.png ‏19 KB

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http://forums.ni.com/ni/board/message?board.id=170&message.id=223495&query.id=135563#M223495
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Attachments:
DynamicUE.zip ‏61 KB

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I would like to make my vi more user friendly by creating start and stop buttons on the front panel. I havent found much info on how to create them. I have created a boolean stop button to stop my FOR LOOP.
-Chris

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How to use one single boolean button to control a multiple while loops?

I've posted the attached file and you will see that it doesn't let me use local variable for stop button, but I need to stop all the action whenever I want but more than one single button on the front panel would look ugly... The file represents the Numeric Mode of
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Attachments:
NUMERIC.vi ‏580 KB

In order to use a local variable, you can change the mechanical action of stop button (Switch When Pressed will work), or create a property node for it and select values. You'll also have to do a lot of work changing those for loops into while loops so that you can abort them.

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Captiate Version: 3
Flash Version: 9
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http://pipwerks.com/2010/08/23/captivatecontroller-updated-to-support-adobe-captivate-5/

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CLA, CLED, CTD,CPI, LabVIEW Champion
Platinum Alliance Partner
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Don't forget Kudos for Good Answers, and Mark a solution if your problem is solved.

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One stop button to control multiple loops?

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