There is a property for each feedback used on a handset called "execute macro on" that has two choices... 1. value change and 2. value update. Where is the detailed info on how this is intended to be used? And what macro is it referring to.
Value Change means the value actually changed to a new value and it executes a macro (you can double click on the feedback in the GUI and drag and drop Macro from the Actions).
Value Update means the device reported the value regardless of if it changed or stayed the same.