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 #107

11 October, 2026

Update on what development happened across the Eclipse 4diac project in the week from October 2 to October 11, 2026.

This week brings a new library export wizard, an AsciiDoc formatting toolbar for the Documentation Editor, and support for Revolution Pi devices in 4diac IDE. Further improvements include typed subapplication attributes, adapter connection validation, and localization preparation, while 4diac FORTE fixes InOut connection handling and 4diac FBE updates open62541.

Eclipse 4diac Weekly #106

2 October, 2026

Update on what development happened across the Eclipse 4diac project in the week from September 25 to October 2, 2026.

This week focuses on improving Structured Text editing and refactoring, fixing resource management in the FB interpreter, and preparing more 4diac IDE components for localization. Additional improvements address documentation generation, type library consistency, and overall robustness.

Eclipse 4diac Weekly #105

25 September, 2026

Update on what development happened across the Eclipse 4diac project in the week from September 18 to September 25, 2026.

This week brings new support for EtherCAT types and improved struct member handling in 4diac IDE, including refactoring directly from connections. Further improvements focus on editing expanded subapplications, graphical editor usability, and robustness.