[airnate]

Can you post your own code so I can take a look?

If you want to debug your code, you can turn on highlighting (the lightbulb button), you should be able to see that the limit switch causes the while loop to exit and then the motor should set the speed to zero causing the motion to stop.

One issue may be that I'm assuming the DIO input goes True when you want your motor to stop. If the opposite is what you want, then right click the while loop stop sign and select "Continue if True".

-Nate