I'm looking for a way to disable the PID.vi from running in Labview when the event case container is false.
The program controls motor position to maintain constant tension on a cable using target force and actual force as the input parameters. The output is motor position. Note that reinitialize is set to false since it needs previous instances to spool the motor.
Is there a way to freeze the PID controls so that it continues from where it left off?
The PID VI does not run in the background. It only executes when you call it. That said, PID is a time-based calculation. It calculates the difference from the last time you called the VI and uses that to calculate the new values. If a lot of time passed, it will just try to fix it using that data.
If you want to freeze the value and then resume fixing smoothly, you can use the limits input on the top and set the max and min to your desired output. This will cause the PID VI to always output that value. You will probably need a feedback node or shift register to remember the last value output by the PID.