There are two ways that this can be achieved:
Use the Event Modules and add the points that are used to calculate the logic as trigger points. Note that if you have multiple trigger point, any one of them will result in the execution of the module.
Set up a Data Simulation task. Add a dedicated point with a sub-second pulse (square wave) simulation. Use this point as a sub-second trigger point.
We strongly recommend the first option as it is much quicker and also does not use any CPU when there is no change in your points. Using this method, you can build very large logic routines that are only triggered when needed resulting in a more efficient system.