SysML Block definition

SysML Block. A SysML Block can correspond to the top level FMI element denoting that this is the highest hierarchical element in the model structure. This corresponds to a single FMU.  FlowPort with 'in' direction: This corresponds to either one FMI Scalar input variable (can be either discrete or continuous) or a group of scalar input variables (via the second approach) when the FlowPort is typed with a “StrtType” interface.  FlowPort with 'out' direction: This corresponds to either one FMI Scalar output variable (can be either discrete or continuous) or a group of scalar output variables (via the second approach) when the FlowPort is typed with a “StrtType” interface.  Attribute: This corresponds to a FMI scalar parameter or local variable.  Initial value of an attribute or FlowPort: This corresponds to the start value (value reference) of a scalar variable. Additionally, using the second approach, the attributes inside a “StrtType” interface can have initial values as well. Details related to StrtType (structural type) can be found in [2]. A SysML attribute pertaining to a FMU can have an initial value defined in the model, as seen in Figure 7. Here, the controller FMU has local variables, which have been set to some initial values.
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Examples of SysML Block in a sentence

  • The SysML Block Definition Diagram (BDD) shows how blocks are assembled into architectures; it is the analogue of a UML Class Diagram.