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 #90

12 June, 2026

Update on what development happened across the Eclipse 4diac project in the week from June 5 to June 12, 2026.

Following the Eclipse 4diac 3.2 release on June 10, this week focused on improved ECC and replay debugging in 4diac IDE, including graphical outlines, breakpoints, event comparison, and timeline annotations, while 4diac FORTE received a broad set of reliability fixes across OPC UA, memory management, and protocol handling.

Eclipse 4diac 3.2 Released!

7 June, 2026

We are excited to announce the official release of Eclipse 4diac 3.2, arriving right on schedule as the third release under our new 3-month release cadence.

Eclipse 4diac Weekly #89

5 June, 2026

Update on what development happened across the Eclipse 4diac project in the week from May 29 to June 5, 2026.

This week’s updates focus on polishing usability and model handling, featuring enhanced replay debugging tools and refined type import logic for the 4diac IDE. Meanwhile, 4diac FORTE upgrades its underlying OPC UA event layer to better support the open62541 v1.5 series.