Programming with ETS5 | In addition to the certified products made by the suppliers, a piece of software is needed that ensures that it actually starts talking to each other. This is the package of KNX ETS5. The 5 already indicates that this is not the only version. The first version came on the market in 1993. The most recent version is the ETS6, which is also available on this site. There will be an explanation of how ETS5 functions and how you can program it. You learn the logical steps so that the software functions optimally. You can create a simple program and upload it in the controller at the end of the lesson. You will be taught the most important function you need.