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 #59

31 October, 2025

Update on what development happened across the Eclipse 4diac project in the week from October 24 to October 31, 2025.

4diac IDE received a large enhancement for transition condition support and improved annotation handling, while work on 4diac FORTE focused on better modularization, cleanup of outdated modules, and improved portability across systems.

Eclipse 4diac 3.0 Enters Feature Freeze!

27 October, 2025

After more than two years of development and over 7200 commits across 4diac IDE and 4diac FORTE, Eclipse 4diac 3.0 has the feature freeze phase! This marks a major milestone toward our next big release.

Eclipse 4diac Weekly #58

24 October, 2025

Update on what development happened across the Eclipse 4diac project in the week from October 17 to October 24, 2025.

This week’s updates continue refining the stability and consistency of both 4diac IDE and 4diac FORTE. 4diac IDE received multiple improvements around refactoring, editor synchronization, and type management, while 4diac FORTE introduced updates to generic block handling, build configuration, and testing.