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 IEC 61499 Function Block Library 4diac LIB IEC 61499 example systems 4diac SYS

Latest News

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Eclipse 4diac Weekly #45

25 July, 2025

Update on what development happened across the Eclipse 4diac project in the week from July 18 to July 25, 2025.

This week’s development work focused on improving editor behavior, refining code through cleanup and refactoring, and extending functionality across both 4diac IDE and 4diac FORTE. Several enhancements were made to avoid unnecessary reloads in editors, simplify test infrastructure, and introduce new function blocks. 4diac FORTE saw continued work on OPC UA integration and function block consistency, along with the removal of legacy configuration options and build system improvements.

Celebrating 18 Years of Eclipse 4diac

23 July, 2025

Today marks the 18th anniversary of Eclipse 4diac. On July 23rd, 2007, we presented 4diac for the very first time at a workshop at the IEEE International Conference on Industrial Informatics (INDIN).

Eclipse 4diac Weekly #44

18 July, 2025

Update on what development happened across the Eclipse 4diac project in the week from July 11 to July 18, 2025.

The latest round of updates across Eclipse 4diac brings improvements to the BulkEditor in 4diac IDE, the inital scrolling of graphical editors, and global constant and varconfig handling. On the 4diac FORTE side, the build system was overhauled to simplify and modernize CMake usage. OPC UA support was updated to open62541 v1.4.12.