How to stop a process during event?

[Tar81]

Hello,

Can you help me to find solution for the following problem?

In the attached program, I have 3 buttons - START, STOP and PAUSE and numeric indicator.
I need that when I press START, the data written in numeric indiator, incremented until I
press STOP button to stop the process or until I press PAUSE to pause the process.
How can I organize this? I created an event - START button mouse up, and inserted an infinite loop in it.
Is there a way to stop this event or pause it?

Thanks

[GerdW]

Hi Tar,

at no times, never, never ever put an infinite loop into an event case!

Never use infinite loops unless you're using a Realtime/FPGA target !

[GerdW]

Hi Tar,

now I looked into your vi.

Never, never ever, use UI loops without a timeout. They are just hogging the CPU...

See attachment for simple example (needs some more fine tuning). Read the white papers & context help for the event structure and look through the examples, that come with LabView! 

[R3g]

Hello,

Here you go

[Tar81]

In reality, in my program there is not an infinite loop inside event structure. In my real program there is a sequence of commands that must be performed sequentially when I press START button. I need to have a possibility to pause it and continue performing commands later or to stop it.

[GerdW]

Hi Tar,

then you should look into StateMachines. There should be an example too!

And you should try to ask what you want in the first place...

@ReG64:

It's definitely nicer to use an enum instead of simple numeric constants!

@Tar:

Use ReG64s example to start building a state machine!

Message Edited by GerdW on 10-06-2009 11:16 AM

[R3g]

@GerdW:

Yes, it simplifies the understanding