Wincc Rest Api

[External Client] --(HTTP/HTTPS)--> [WinCC REST Service] --(Internal COM)--> [WinCC Runtime] | +--> [Tag Archive] +--> [Alarm Log]

The WinCC REST API is a web-based interface that allows external clients (web apps, MES systems, ERP software, cloud platforms) to read and write process data, manage alarms, and control user authentication—without needing proprietary OPC clients or WinCC runtime installations. wincc rest api