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 #63

28 November, 2025

Update on what development happened across the Eclipse 4diac project in the week from November 21 to November 28, 2025.

This week’s Eclipse 4diac updates bring substantial robustness improvements to 4diac IDE, especially around member access pins, refactoring, monitoring, deployment, and ST tooling. 4diac FORTE receives targeted fixes for response handling and type-hash reporting.

Eclipse 4diac Weekly #62

21 November, 2025

Update on what development happened across the Eclipse 4diac project in the week from November 14 to November 21, 2025.

This week’s Eclipse 4diac updates strengthen 4diac IDE with the new feature for member access pins, interpretation behaviour, and type handling. The 4diac ecosystem also advances through refined IO-handle management in 4diac FORTE, updated documentation and 4diac FBE components.

Eclipse 4diac Weekly #61

14 November, 2025

Update on what development happened across the Eclipse 4diac project in the week from November 07 to November 14, 2025.

This week brings improvements across all Eclipse 4diac main components — 4diac IDE, 4diac FORTE, and 4diac FBE — with a strong focus on robustness, correctness, and smoother developer workflows.