Switch to manipulate an eventcase structure??

Hi everybody
I'm working with labview 7.1 and ,i'm developing a userinterface to controle af Flow meter (FLM).
In my VI, i'm using event structure to handle som buttons when pressed.
I starts my application by pressing arrow button in labview. now the my program(VI)is ready.
I got one problem now, wtih a switch button to stop the measurements and commandswrite from/to the flow meter.
when i switch the start /stop-switch to start, the VI writes some commands to FLM using the serial port like desired,
and then the eventcase structure is ready for some button actions. These buttons are used to send commands to FLM.
i can without problems send the desired commands to FLM.
Now when i switch the start/stop-switch to get the vi to stand by, the event case stil reseives and handle the commandbutton when pressed.
can any one help me with my problem?
any suggestions are full acceptable
Thanks
HZ
PS. if there are problems understanding my explanation, please informe it.!
Message Edited by HFZ on 01-16-2006 05:14 AM
HFZ
Attachments:
DEMO2.vi ‏112 KB

Hi,
First of all, the structure of your program look a little strange to me.
You have two infinite while loops, that constant connected to the while loop end control will make sure that once you entered there you will never get out. It's ok that you put an event structure inside the loop and you even have an event assigned to the exit button, then the exit control of the loop should be controled be the value of the exit on that event loop.
I'm quite convinced that you can change the structure of the program in such a way that you have only one loop and only one event structure inside of it controlling all the buttons and the exit condition.
Anyway there are still some functionalities that I don't understand...
Do you want that the program starts once the user press the button to start and then end it when he presses it to stop?
I changed it a little bit, I'm not sure if this is exactely what you need and I'm sure that it can be improoved, but I hope it can help you...
Paulo
Attachments:
DEMO2.vi ‏108 KB

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I have coded a program that if i click a button ( switch untill released) . inside that structure should work only one times .
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Attachments:
CODE.vi ‏10 KB

saran1988 wrote:
I have coded a program that if i click a button ( switch untill released) . inside that structure should work only one times .
and i have coded and its working fine .. but its looks compilcated..
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What is the purpose of the orange numeric indicator. Is it just a kludge for your logic or does its value mean anything?
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screb.GIF ‏12 KB

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