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 #102

4 September, 2026

Update on what development happened across the Eclipse 4diac project in the week from August 28 to September 04, 2026.

This week brings the finishing touches for the Eclipse 4diac 3.3 release, with improvements to Wago register communication, deployment and refactoring robustness, and legacy project compatibility, while also preparing the 3.4 development cycle with the move to Java 25.

Eclipse 4diac Weekly #101

28 August, 2026

Update on what development happened across the Eclipse 4diac project in the week from August 21 to August 28, 2026.

This week brings new visualization and event-sequence tooling to 4diac IDE, including FB network topology and sequence views, alongside substantial improvements to OCL validation and type handling. 4diac FORTE extends monitoring to struct members and Wago 750-636 register communication, while RampLimitFS receives corresponding fixes and new limit indicators.

Eclipse 4diac 3.3 Feature Freeze

27 August, 2026

The feature freeze for the upcoming Eclipse 4diac 3.3 release is now complete, and we are officially entering the stabilization phase.

Our focus over the coming weeks is strictly on testing, fixing remaining issues, and polishing the release ahead of the September 9, 2026 launch. This release brings substantial new capabilities to both 4diac IDE and 4diac FORTE to improve the diagnosis, visualization, and deployment of distributed IEC 61499 applications.