Eclipse 4diac Logo design once use everywhere Open Source PLC Framework for
Industrial Automation & Control


Communication Channels

Discussion Forum

For asking questions and discussing 4diac related issues the 4diac discussion forum is here for you.

Project Mailing List

Follow and participate in discussions on 4diac. You can subscribe here


4diac bugs and enhancements are maintained using Bugzilla. Please submit issues and suggestions on 4diac IDE, 4diac FORTE, libraries, examples as well as the web page here.

In order to understand the 4diac concepts and the corresponding implementation it is advisable to get familiar with the IEC 61499 reference model. The following resources provide more information about the IEC 61499 concept and the 4diac implementation:


Thanks for your interest to support 4diac. There are multiple ways to contribute.

Documentation, Marketing, and Supporting new Users

Bug Wrangling and Testing


If you are a developer feel free to grab the code and start hacking. You can submit your patch any time when you are ready.