Wincc: Rest Api ((free))

The Siemens WinCC REST API provides a modern gateway for accessing runtime data, allowing developers to bridge the gap between industrial automation and standard web technologies. Whether you are building custom dashboards, integrating with ERP systems, or feeding data into AI models, the REST interface offers a scalable, platform-independent solution for data exchange.

The traditional, powerful SCADA footprint for large-scale operations. It utilizes a connectivity pack and specific options (like the WinCC REST Connector) to expose tags, alarms, and historical data.

WinCC Unified represents the evolution of Siemens visualization platform within the TIA Portal environment. Unlike the REST API in WinCC Classic, WinCC Unified employs GraphQL—a more flexible query language that provides significant advantages over traditional REST. wincc rest api

POST http://wincc-oa-server:80/set_dp Content-Type: application/json

Within an hour, you’ll have a working integration. The Siemens WinCC REST API provides a modern

The WinCC REST API functions as a standardized, platform-independent gateway. It uses HTTP methods (GET, POST, PUT, DELETE) and structured JSON payloads. This eliminates the need for proprietary Siemens drivers or complex OPC UA configurations when communicating with external web software. Key Capabilities

Query the current value, quality code, and timestamp of individual tags or arrays of tags. It utilizes a connectivity pack and specific options

"dp": "MySystem.PID_Setpoint", "value": 250.0, "quality": "GOOD"

It is vital to distinguish between the two major Siemens WinCC architectures, as their REST API implementations differ significantly:

: External clients can read and write WinCC configuration data and tag values.