Notes and Restrictions

Notes

  • A locked project can be unlocked again, if the UI is restarted with the commandline option "-mobile-unlock".
  • The Desktop UI does not support engineering your WinCC OA project. It is only intended as remote access for operators.
  • For mobile devices the Mobile UI Application is available in the respective App stores.
  • You can change the text of the information window of the desktop UI by changing the text in the "infoListConfig.json" file in the C:\Siemens\Automation\WinCC_OA\3.20\\DesktopUI\3.20\data\webClient directory.

Restrictions

  • Passwords containing Cyrillic characters cannot be used with the Desktop UI.
  • The WinCC OA Desktop UI can only connect to project of the same version.
  • For the authentication to the HTTP server or proxy only the "Basic" schema is supported.
  • If accessing other files using File functions it must be regarded that they maybe have not yet been imported to the cache directory on the client. Thus, always use file functions together with the getPath() function. getPath() sends an HTTP request to the web server to download the current version of the file. See also getFileNamesRemote()
  • Single Sign On to HTTP or proxy is not supported. The user data must be added and stored inside of the Desktop UI connection.
    Restriction: These credentials are only used if the Server authentication has been enabled, see the config entry [webClient] httpAuth.
  • Redundant network connections are not supported - the HTTP server is always requested only via one address.
  • If port 80 cannot be opened under Linux due to missing user rights (non-root user), the port 8080 is opened to enable the use of the Desktop UI. This must be considered when configuring the web server.
    Tip: Please note that by default only the HTTPS port can be used for the Desktop UI. To also use the unencrypted HTTP port the config entry [httpServer] strictTransportSecurityMaxAge must be set to 0.
  • The usage of the automatic logout is not supported by the Desktop UI.
  • When a Desktop UI is started on the machine the server project is running on and the Desktop UI instance is not yet unlocked, the GEDI cannot be started as it will immediately be terminated again. Following steps will resolve this problem:
    1. Stop the webclient_http.ctl, this allows to open the GEDI again.
    2. Navigate to System Management > Device Managementand unlock the local machine with the corresponding checkbox.
    3. Restart the webclient_http.ctl.
    To prevent this problem, the automatic unlock for Desktop UIs can be activated.