In the last weeks we were informed about several bugs in FORTE 0.3.6. With this new release we provide a fix for several of these. This includes an improvement in the communication handling, correction of wrong filenames of data type files, a range issue in the cycle time calculation of the pc timer handler, an improved build structure without the need for symbolic links, and a cleanup of the used standard include files in order to fix compiling issues under Linux.

PROFACTOR GmbH and Bachmann electronic GmbH have introduced a test-driven development approach for IEC 61499 and the online-monitoring and debugging of IEC 61499 function block networks on basis of the 4DIAC software. The attached German article form the "Computer & Automation" magazine provides an overview of this extension to the 4DIAC software which will be available as commercial license.

If you have any questions to this commercial 4DIAC extension please contact

During our work on the next major release of FORTE we identified a very serious bug in the communication interface of FORTE. This bug will break any IEC 61499 communication, which contains at least one BOOL data connection. This bug has been introduced in version 0.3.5. We strongly recommend to upgrade to 0.3.6, which fixes this issue. 

If you have any additional issues please let us know.

The initiators and founders of the 4DIAC Open Source Initiative - PROFACTOR GmbH and Automation & Control Institute, Vienna University of Technology - provide commercial enhancements and services related to the 4...