The FaultElement shows a fault flag. The faults page of the predefined device windows makes use of this display element.
The software treats device faults in a special way. In the variable list of a device driver the fault flags appear as variables called "faults.00" .. "faults.99". The software automatically produces a variable "config.faults.XX" for each fault flag "faults.XX" the driver defines. This configuration variable controls the priority of the fault.
Actually, FaultElement is not included in the API. If the original screen definition contains instances of this type, they are skipped and not included in the ScreenDefinition reported to the UI.