As of ETS6.3.0, it is no longer possible to manually add group addresses to the line coupler's filter table in new ETS projects.

The primary line of a TP line coupler is the main line of the area or "line 0"

If all KNX TP lines of a KNX installation use KNXnet/IP routers instead of KNX TP line couplers, the needed backbone couplers must be KNXnet/IP routers

If all KNX TP lines of a KNX installation use KNXnet/IP routers instead of KNX TP line couplers, the needed backbone couplers must be KNXnet/IP routers

The current Datapoint Types (DPTs) in KNX are identical to the EIB Interworking Standards (EIS), only the name has been changed and no new DPTs have been laid down since EIB

A group object in a device which is already connected with a secure group address, can no longer be connected with a different non-secure group address. This means possibly that a non-secure KNX device will have to be exchanged for a KNX Secure device.

The useful life of dimmable lamps is considerably shortened when the parameter for maximum control value - other than its nominal 100 % value - is set (e.g., 85 %).

An OR gate with its output inverted is equivalent to a NOR gate and also to an AND gate with its two inputs inverted

To improve performance in larger size buildings, it is always better to route all telegrams through line couplers rather than via dummy applications, as a lot of time is lost configuring dummies.

Just looking from time to time at the consumption value displayed by a smart meter is sufficient to know the consumption pattern in the period of time one wants to analyze.