Exit the while loop inside the events structure

[StevenK]

Hi,

I'm new to labview development. Following is my project description.

I'm using while loop to read DAQ Max input to capture user press on the machine button. Basically I read to read the 2 start button to ensure the user are pressing the 2 button together as a safety purposes.

Then I created a events structure inside seperate while loop to fire the events. The events will be fire when both button continusly press by user.

Inside this fired events, I have 1 while loop to continue monitor the 2 buttin status to ensure user did not release until the machine ARM going down & hit the limit switch which is anotoher input to the DAQ Max card. The loop will be exit one the limit sw change to TRUE. If the user release the 2 button before the ARM hit the limit sw, it suppose to move back the ARM.

I have another flat sequence structure to turn on the machine ARM.

Problem.

Once it hit the limit sw, I release the button, it still move back the ARM & the whole program halted & do not response to anyhings I press.

[devchander]

Although you have explained the problem in detail, we can probably answer better by taking a look at the concerned VI

Please post the VI so that we could take a look at it give you an useful solution

[Harry02]

Hi Steven,

It is always advisible to avoid much of coding inside the event staructure case.

In your case, i guess, you are monitoring the state of both the buttons (which you are acquring from Daq card).

Instead, why dont you make a boolean true and then perform the checking in another while loop with the termination terminal using the sates of these two buttons.

I hope you got my idea.

[madengr]

I take it as a backup you have real hardware, (i.e. the two start buttons wired in series to a relay in series with  the actuator?  I would not trust software to keep from loosing a limb.