This chapter contains the interface description to access the equations of a dynamic system from a C program. A schematic view of a model in "FMI for Model Exchange" format is shown in Data flow between the environment and an FMU for Model Exchange:
Figure 1. Data flow between the environment and an FMU for Model Exchange
Blue arrows: Information provided by the FMU.
Red arrows : Information provided to the FMU.
\(\mathbf{v}_{start}\), \(\mathbf{u}\), \(\mathbf{y}\), \(\mathbf{w}\), \(\mathbf{x}_d\) are of type Real, Integer, Boolean, String;
\(\mathbf{t}\), \(\mathbf{x}_c\), \(\mathbf{z}\) are of type Real.