Select the correct device template in the text or graphics Terminal properties.
Double click the terminal editor or right-click the terminal to open the editor. In the User rights tab see the defined users , and their rights and passwords. Edit the records if necessary.
Check the SSCP parameters (user name, password, SSCP address, target address, TCP port) in the Terminal properties.
Check the SSCP parameter setting in the device in the terminal channel. The SSCP parameters must match those configured in the PLC.