Export Simulink Models to Functional Mock-up Units Export Models Export Simulink ® models to functional mockup unit (FMU) that supports co-simulation and model exchange modes for FMI version 2.0 and 3.0. To check that the exported block is still a valid Simulink model, you can also direct the software to import the FMU back to a Simulink model as part of the export process. Requirements include: