﻿Here, you can specify when the actuator should update the feedback value for the switching status (object "Brightness value feedback") in case of an actively transmitting communication object. The object value updated by the actuator is then signalled actively to the KNX.

*after each update object "Brightness value"/"Central brightness value"*: The actuator updates the feedback value in the object once a new telegram is received on the input objects "Brightness value" or "Central brightness value" or the value changes internally (e.g. through a time function). With an actively transmitting feedback object, a new telegram is also then actively transmitted to the KNX each time. The telegram value of the feedback does not necessarily have to change in the process. Hence, a corresponding brightness value feedback is also generated on the "brightness value" object such as in the case of cyclical telegrams for example.

*only if the feedback value changes*: The actuator only updates the feedback value in the object if the brightnes value also changes or the switching state changes internally (e.g. through a time function). If the telegram value of the feedback does not change (e. g. in the case of cyclical telegrams to the "Brightness value" object with the same telegram value), the actuator does not transmit any feedback. Consequently, with an actively transmitting feedback object, no telegram with the same content will be transmitted repeatedly either.
