Wincc Rest Api -

: Find the tag management endpoint (e.g., /WinCCRestApi/v1/Tags ).

The service typically runs as a self-hosted web application, often leveraging Microsoft’s OWIN (Open Web Interface for .NET) framework, listening on a specific TCP port (default often 443 or a custom high-port) for HTTPS requests. wincc rest api

| HTTP Status | Meaning | Solution | | :--- | :--- | :--- | | 401 Unauthorized | Authentication failed. | Check username/password. User must have WinCC remote roles. | | 403 Forbidden | Authenticated but not authorized. | Assign "WinCC Remote Read" permission. | | 404 Not Found | Tag or endpoint doesn’t exist. | Verify tag name spelling (case-sensitive). Check if tag is released for Web access. | | 500 Internal Error | WinCC runtime issue. | Check WinCC event log. Runtime might be busy. | | 503 Service Unavailable | REST API service not started. | Ensure "Enable REST API" is checked and runtime is running. | : Find the tag management endpoint (e