Hi Mr_Prof,

Similar questions have already been answered in the forum.

Unfortunately, WinCC Unified has no built-in functionality for this. To react to long periods of inactivity, the most common solution is to use the screen saver to reduce the screen brightness and a script that reacts when the brightness falls below a certain level. However, this solution requires that the screen saver is configured correctly. Changing the screen saver can cause the solution to stop working.

Since it appears that you only want to change the screen when the user automatically logs off, you can place a script somewhere in your screen window layout on a property that is always available, triggered by a change in the @UserName system tag. Without any additional work, this solution will also change the screen on an intentional logoff, which could be configured for a button event.

Kind regards
Stefan

Hi Mr_Prof,

Most WinCC Unified projects - including the one you can find as an example on the Siemens support pages - use the screen-in-screen technique. Here, the start screen contains screen windows and all screen switches are located within these windows. This means that the start screen is always available. So in this case, choose a property of the start screen and use it to trigger the script via dynamization.

If you did not work this way, you can configure the main screen window in Screen Window Management and use a property of that main screen window to place your script.

Kind regards
Stefan

Hi Mr_Prof,

Basically, your script needs to get the username and, if empty, do a screen change. This might look like:

Kind regards
Stefan