Invalid connection from output port 1 of 'Discrete-Event Chart' to 'Input Port 1' of 'Entity Gate'. Ports are not compatible and cannot be connected

Question

Laila El Warraqi 2022-11-8

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1846113-invalid-connection-from-output-port-1-of-discrete-event-chart-to-input-port-1-of-entity-gate

回答： Devesh Bhasin 2022-11-10

I have a simulink process with a Discrete Event Chart where I modeled machine failure. If the machine is in failure then the process stops and the entity gate closes, else the entity gate opens.

However, I keep getting the error of invalid connection, so the incompatibility between the output port of the discrete event chart (which i called MachineFailure) and the input port of the ENTITY GATE.

How can I solve this issue?

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Answer 1

Devesh Bhasin 2022-11-10

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https://ww2.mathworks.cn/matlabcentral/answers/1846113-invalid-connection-from-output-port-1-of-discrete-event-chart-to-input-port-1-of-entity-gate#answer_1096463

This error sometimes shows up when a simEvents entity or message is connected to a Stateflow chart. If this is the case you, the following procedure should resolve this error:

In your Stateflow chart, open the Symbols Pane.
Click on the 'New Message' button on the top of the Symbols Pane.
Go back to our model. A new message Input Port should now appear for the Stateflow chart. Connect your simEvents entity or message to this port.

I work at MathWorks and have conveyed the need of a clearer error message to the appropriate team.

If this does not resolve the issue, please create a case with the MathWorks Technical Support and share your model.