The Functional Mock-up Interface (FMI) is a free standard that defines an interface to exchange dynamic models using a combination of XML files, binaries and C code. It's supported by 240+ tools and maintained as a Modelica Association Project.
Releases and the latest development version of the specification are available on the FMI website.
- docs — sources of the specification document
- headers — header files of the C-API
- schema — XSD schema for the modelDescription.xml
- CONTRIBUTING.md — info on contributing to the project and building the specification document
- README.md — this document
main— development of the next releasev{2|3}.0.x— maintenance of the 2.0 and 3.0 releases
The following layered standards are currently under development:
- XCP — information for calibration and measurement
- Network Communication — mapping of variables to buses
- Structure — semantic grouping of variables
- REF — stimuli and reference results
Code and documentation copyright © 2008-2011 the MODELISAR consortium and 2012-2025 the Modelica Association Project FMI. Code released under the 2-Clause BSD License. Docs released under Attribution-ShareAlike 4.0 International.