Subsystems are used in the creation of block diagrams to nest assembled items within other circuits or models.
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- Power port blocks link signals from outside a system to the system.
- Power port blocks in a subsystem represent inputs to the subsystem. A signal arriving at a Power port on a Subsystem block originates from the associated connection in that subsystem.
- A port's numbering on the Subsystem block at the parent level indicates the port where the signal arrives with the matching number at the child level.
To connect electrical signals across hierarchical levels:
Subsystems exchange signals between the inside and outside of the subsystem, or across their boundaries, by placing ports inside subsystems. When adding a port block inside a subsystem, it is also visible on the subsystem block of the parent subsystem. Signals connected on both sides of the port share the same electrical node and same voltage, i.e., they are electrically connected.
- Click twice to access the subsystem's contents.
- Add one or more System > Electrical port(s) to connect the signal between the current (child) subsystem to the parent subsystem.
In the animated video above. we've connected one electrical ports to the left, and one to the right of the subsystem.
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