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.

Learn More

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

View all

Eclipse 4diac White Paper on Improved IEC 61499 Communication Modelling

13 October, 2025

The Eclipse 4diac project is not only dedicated to providing an open-source ecosystem for IEC 61499-based automation but also to continuously advancing and improving the IEC 61499 standard itself.

As part of this ongoing effort, we are excited to share our first Eclipse 4diac White Paper, focusing on improved communication modelling in IEC 61499.

Eclipse 4diac Weekly #56

10 October, 2025

Update on what development happened across the Eclipse 4diac project in the week from October 03 to October 10, 2025.

This week’s updates bring further refinements to the new 4diac IDE import and validation mechanisms, cleanup of XML structures across the codebase, and several improvements to build robustness and platform compatibility in 4diac FORTE.

Eclipse 4diac Weekly #55

3 October, 2025

Update on what development happened across the Eclipse 4diac project in the week from September 26 to October 03, 2025.

This week brought major progress in the ongoing refactoring of the 4diac IDE with the transition to the new BlockFBNetworkElement model, alongside several fixes and improvements in 4diac FORTE and updates to the documentation.