Terminator for unconnected physical signal outputs
Use the PS Terminator block to cap physical signal output ports that do not connect to other blocks.
Unlike conserving ports in physical modeling, or Simulink® output ports, unconnected physical signal output ports do not generate warnings. However, you can use a PS Terminator block for clarity, to indicate that the signal was not inadvertently left unconnected.
The block icon size allows you to connect the PS Terminator block to an open port without rerouting the adjacent lines:
The block has one physical signal input port.