Goodmorning,

I've some problems using T_CONFIG to change an IP address from HMI. I followed the demo project  (https://support.industry.siemens.com/cs/ww/en/view/75795361),but when I try to create a button that must disconnect the old HMI-PLC connections, I can't see any connection in the properties of the button (please see the attached screenshot). I think the connection is ok because PLC and HMI works.

Someone can help me? Thank you very much

Hi,

Please note the "ChangeConnection" function of the HMI does not change the IP address of the PLC, it just disconnects the connection to the PLC currently in use and establishes a connection to a PLC with another address. Both HMI connections have to be configured in the project for this. See:

ChangeConnection