Modeling systems > Creating diagrams of models
Find external connections
You can locate external connections to your systems. An external connection to a selected system connects that system to any of its children at any level to one or more other systems. For a selected system, the Interfaces tab shows one line representing rolled-up external connections to each of the external systems. Your administrator can configure the Interfaces tab to show peers or direct connections from a selected system to the external systems.
These procedures use a rolled-up connection example: the selected system, PMT200 - Body Interior, is represented by the blue circle in the middle. The external systems that communicate with the selected system and the rolled-up connections between them are also shown.
Procedure
Do any of the following:
- To change the selected system (the blue circle in the diagram), double-click an external system (PMT100 - Body Exterior or PMT500 - Electrical, for example).
- To view the children of the selected system, double-click the selected system (for example, double-click PMT200 - Body Interior).
- To move up a level, click Go up.
- To show the details of a selected roll-up connection, click Show Connections Table. The table shows the underlying connections that comprise the rolled-up connection line.
- To reposition the table, click to switch between Graph View and Grid View.
Do any of the following:
- To change the selected system, double-click a column heading.
- To view the first level children, click a row heading. The children shown are either directly or indirectly connected to the external systems.
- To view connection details, click a blue circle.
- To toggle labels, click the label toggle icon.
Source: https://docs.sw.siemens.com/en-US/doc/282219420/PL20251212545240207.MBSE/xid1550502 · retrieved 2026-07-10