What Is Eclipse 4diac™?

Eclipse 4diac™ Provides an Open Source Infrastructure for
distributed Industrial Process Measurement and Control Systems
based on the IEC 61499 Standard.

design once use everywhere

Eclipse 4diac Virtual Community Meetings

Join us for a discussion on IEC 61499 and Eclipse 4diac. We welcome interested participants from all background, whether seasoned developer or interested newcomer. We will demonstrate new developments in Eclipse 4diac, outline our development roadmap, and provide enough room for questions and answers with the project team of Eclipse 4diac.

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Eclipse 4diac provides

IEC 61499 Engineering Tool 4diac IDE Real-time Capable IEC 61499 Execution Environment 4diac FORTE Easy to use Build Environment for 4diac FORTE 4diac FBE IEC 61499 Function Block Library 4diac LIB IEC 61499 example systems 4diac SYS

Latest News

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Eclipse 4diac Weekly #78

20 March, 2026

Update on what development happened across the Eclipse 4diac project in the week from March 13 to March 20, 2026.

This week’s Eclipse 4diac updates focus on usability and robustness improvements in 4diac IDE, especially around libraries, validation, and editing workflows, while 4diac FORTE enhances monitoring capabilities and updates its OPC UA stack.

Eclipse 4diac Weekly #77

13 March, 2026

Update on what development happened across the Eclipse 4diac project in the week from March 06 to March 13, 2026.

This week’s highlight was the 3.1 release. But after the release is before the next release. In 4diac IDE we worked on visual improvements, mapping behavior, and interpreter groundwork in the 4diac IDE. 4diac FORTE, documentation, and FBE mainly receive maintenance updates and alignment with the new contributing guidelines.

Eclipse 4diac 3.1 Released!

11 March, 2026

The Eclipse 4diac community is happy to announce the release of Eclipse 4diac 3.1, including updates to both the 4diac IDE and 4diac FORTE. This release introduces improvements to the development experience in 4diac IDE as well as architectural and performance enhancements in 4diac FORTE runtime.