File Formats—Functional Mock-up Unit (.fmu)
The Functional Mock-up Interface (FMI) standard is an open and tool-independent standard for exchange of models between tools. FMI defines a C interface that is implemented by an executable called a Functional Mock-up Unit (FMU). A simulation environment, such as System Modeler, can use the FMI to create an instance of the FMU and simulate it together with other FMUs or models native to the simulation environment. See Functional Mock-up Interface for more information on how to use FMUs in System Modeler.