Does the subject want to ask "What if there is no port number after wincc is started"? Check the network settings and wincc configuration.

1. Check the network settings: Make sure that the network connection is normal, and it is not a network configuration problem that prevents wincc from obtaining the port number.

2. Check the configuration of wincc: Check the configuration file of wincc to ensure that the port number is set correctly to match the communication requirements of the required application or device.