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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Removing Legacy Process Interfaces in 4diac FORTE

1 November, 2026

To keep 4diac FORTE maintainable and focus development resources on active features, the Eclipse 4diac project is preparing to remove legacy process interface implementations from the 4diac FORTE codebase.

Eclipse 4diac Weekly #110

30 October, 2026

Update on what development happened across the Eclipse 4diac project in the week from October 23 to October 30, 2026.

This week brings major improvements to the Bulk Editor’s graphical query capabilities, enhanced replay debugging views, and smarter ECC transition routing in 4diac IDE. Further updates include an EtherCAT ESI import wizard and improved AsciiDoc editing, while 4diac FORTE focuses on network communication robustness and more efficient tracing.

Eclipse 4diac Weekly #109

23 October, 2026

Update on what development happened across the Eclipse 4diac project in the week from October 16 to October 23, 2026.

This week brings an expanded AsciiDoc Documentation Editor, improved library management, and new export options for function blocks in 4diac IDE. 4diac FORTE adds OPC UA node creation support and improves event handling, while documentation updates cover type management testing and OPC UA deployment.