ETS6.4: making everyday KNX project work simpler and more efficient

One of the most noticeable time savings in ETS6.4 comes from improved linking workflows. With the new multi-linking capability, you can link multiple group addresses to multiple communication objects in a single step. Instead of repeating the same action over and over, you simply select several group addresses, hold the Alt key, and complete the linking in one operation. This is especially helpful in larger projects or when working with repeated configurations, where even small improvements quickly add up. The result is a smoother workflow that saves time while keeping full control over the project structure.

ETS6.4 introduces a clearer handling of native and compatibility modes. By default, ETS starts in native 64-bit mode, giving you full performance and access to all available system memory. This makes working with large projects faster and more responsive. When you open a project that contains older plug-ins, ETS6.4 automatically restarts once in compatibility mode to ensure everything works as expected. After closing the project, ETS returns to native mode on the next start. If your daily work still relies heavily on older plug-ins, you can also choose to always start ETS in compatibility mode. Expect an impact on performance, as this forces ETS to 32-bit operation. This approach gives you the best possible performance without losing compatibility with existing projects.

The introduction of download via serial number in earlier ETS6 versions already removed the need to physically access devices to press programming buttons. ETS6.4 goes one step further by allowing you to set this behaviour as the default. Once enabled, ETS automatically uses download via serial number whenever the serial number of a device is known. This further simplifies commissioning, especially when devices are already installed or difficult to reach.

Keeping project backups up to date has always been important, and with KNX Secure, it has become even more critical to have access to the latest project version. ETS6.4 introduces an automatic backup option that takes care of this for you. After you define an archive location and create the first backup, ETS automatically creates a new archive version every time you close the project. This reduces the risk of missing backups and supports smoother collaboration, especially when working with linked folders or shared archive environments.

ETS6.4 improves the way you model multi-dwelling units. Building parts can now be placed within floors, allowing apartments to span multiple levels. This makes it easier for you to reflect real building structures in your projects, such as multi-storey apartments within a single building. While this may appear to be a small change, it brings more clarity and consistency when working on residential and mixed-use buildings.

With ETS6.4, the foundation is in place for performing firmware updates directly within ETS. Until now, firmware updates typically required manufacturer-specific ETS apps. In ETS6.4, firmware updates can be handled natively, without additional apps, as long as the devices support this new mechanism. This improvement supports long-term maintenance and aligns with current security and regulatory requirements. As more manufacturers make their devices compatible to this new standardized approach, this new native feature will grow in value over time.

Several usability improvements in ETS6.4 help you keep a better overview of your projects. You can see projects sorted by modified date not only on the dashboard, but also in project drill-down views, both locally and in the archive. This makes it easier for you to quickly return to the project you worked on most recently. Group address views have also been extended with new columns showing the associated room and function. This gives you immediate context when working with group addresses and helps you connect logical building functions with traditional group address structures.