I am not sure exactly what you are asking. The Desactivado button resets the alarm and also stops the program. If you do not want to stop the program when you deactivate the alarm, add a separate button for stopping the program.
Other notes: Equality testing on Double precision numbers can be a problem when the numbers are not integers. It would be better to make the data type of the numic control I32.
If you do not get equality, the program stops and you need to run it again to try another value. The case structure should probably be inside the loop.
A loop should have some delay or Wait function so that it does not run millions of times per second. Your users cannot push the buttons that fast!
A better way is to use an Event Structure which responds to changes in the switches.
Do you want the Beep.vi to sound on every iteration of the loop, regardless of the state of the Activar button?
Lynn
