Is it possible to easily change the functionality and interoperability on the KNX System?
Absolutely and without any type of difficulty. It is as simple as connecting to the installation the necessary tool and configure it without rewiring. Normally the installation is connected to a PC. This is made by the integrator and/or the installer of the installation, and can be done remotely if it has been planned from the beginning, needing the permission of the user every time to do so.