How to set communication settings? Don't boot and eject.

There is a C/S structure in RT Professional, which can connect to the server through Simatic Shell, so this is very useful and cannot be deleted.

When there are multiple network cards, Simatic Shell settings will pop up at startup. Select the network card that communicates with the client, and then click OK.

WinCC Client/Server System: Multi-user System and Distributed System Project Configuration (Getting Started Guide)