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Password Protection Issue with Recipe View - TP270 & WinCC Flexible 2005

It appears you're experiencing a persistent login prompt when attempting to modify recipes on your TP270 HMI using WinCC Flexible 2005, despite correct credentials.

This issue often arises from a configuration mismatch between the HMI configuration in WinCC Flexible and the actual runtime behavior. Here's a breakdown of potential causes and solutions:

• User Rights & Recipe Access: Double-check that the user account you're using has explicit "Modify" rights for recipes within the WinCC Flexible security settings. Just being an 'Admin' isn't always sufficient; specific recipe access needs to be granted.
• Global Security Settings: Verify the global security settings in WinCC Flexible (Options > Security). Ensure the security level is appropriate and that password prompting is correctly configured.
• Recipe Persistence: Sometimes, a corrupted recipe file or internal HMI cache can cause this. Try clearing the HMI's cache (if possible through the HMI interface - consult the TP270 manual).
• Download Issues: Ensure the complete project is downloaded to the HMI after making security changes. A partial download can lead to inconsistent behavior.

For detailed instructions and troubleshooting steps, refer to these resources:

• Siemens Industry Online Support: Recipe Protection in WinCC Flexible RT Advanced
• WinCC Flexible Documentation: Consult the WinCC Flexible 2005 documentation (available through SiePortal) for specific details on user management and security configuration.

If the issue persists, provide your WinCC Flexible project version and a detailed description of your security configuration. You can also open a support request via SiePortal for dedicated assistance.