The error indicates that there is an issue with the connection of the input and output ports of a physical signal in a Simulink model. It occurs when the Simulink solver engine fails to find a signal source that is required to execute the simulation.
Following ways might help resolving the issue:
- Review the model to identify which physical signal input ports are causing the error.
- Make sure that each input port is connected to exactly one output port and vice-versa.
- If an input port is connected to multiple output ports, disconnect all but one of the connections.
- Re-run the simulation to check if the error has been resolved.
If the error persists, check the signal type and signal properties to ensure that they are consistent with the physical properties of the system being modelled. You may also need to review the solver settings and model configuration to ensure that they are properly configured for the simulation.
