Broadcast date: December 15th, 2021

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Welcome to the 15th door of our MBSE Podcast Advent Calendar. Today, we take a look at the modeling of interfaces. 

Typically, you use ports typed by interface blocks. With a connector, you model the connection between two ports. 

Let’s have a look at our physical architecture in the model.

TMPCT Physical Architecture

The connection between the trunk and the stand is a typical interface specification: Two ports typed by interface blocks named “ChristmasStandPort” and “TrunkPort” connected with a connector. 

Today we show you a way to specify an interface in more detail. A connector can be typed by an association or association block. An association block can define the details of the connection. 

Association Block Definition

The following block definition diagram shows the definition of the association block PlugSocketInterface between two interface blocks PlugPort and SocketPort, each with nested ports. In addition, the association block has a part property specifying the power cable with a length of 200 cm.

Like any other block, an association block can have an internal structure which is depicted in the internal block diagram. 

Internal Structure of Association Block

The dashed rectangles on the left and the right are references to the association ends typed by the interface blocks with the nested ports. Here, we have modeled a simple structure by connecting the nested ports directly. 

This interface definition is applied between the external power supply and our Christmas tree, as depicted in the following diagram. 

Typing a Connector with an Association Block

So much for the 15th door of our MBSE Podcast Advent Calendar. We wish you a great 15th of December.

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