Wincc Rest Api !!top!!
No more DCOM port ranges. No more registry hacking. Just a simple HTTP endpoint, secured with authentication (often via WinCC user management or Windows auth). In a demo, a Python script with requests.get(‘http://wincc-server/api/tags/BoilerTemp’) works in seconds.
The WinCC REST API is a modern web service that allows external applications to access and manipulate WinCC runtime data and configuration data using standard HTTP protocols. At its core, it transforms WinCC's internal data points and services into accessible URLs that can be called from virtually any programming language or development platform that supports HTTP requests.
: A valid WinCC/Connectivity Pack license is mandatory. Without it, the API will return a 402 Payment Required error.
base_url = "https://192.168.1.100/api/v1" auth_response = requests.post(f"base_url/auth", json="username": "apiuser", "password": "pass") token = auth_response.json()["access_token"] wincc rest api
/WinCC/REST/Alarms/AlarmID/Acknowledge
The WinCC REST API is an interface that allows external applications (web browsers, mobile apps, ERP systems, or MES) to read and write process data, alarms, and archives from the WinCC runtime environment using standard HTTP requests (GET, POST, PUT, DELETE).
Always verify with Siemens documentation for your exact version and update level. No more DCOM port ranges
You need the "WinCC Web Service" package. For WinCC Unified: REST API is part of the Unified Web Server – no extra license.
POST https:// /api/v1/auth/login Content-Type: application/json "username": "api_user", "password": "SecurePassword123" Use code with caution.
POST /api/v1/tags/read-batch
: Cache slowly changing tags (such as asset names or structural thresholds) on the client side to minimize redundant server requests.
: Access and filter message system data (alarms) via the REST interface. Bidirectional Communication WinCC REST Service : Acts as a server, allowing external tools like or custom web apps to query WinCC. WinCC REST Connector
The WinCC REST API is a software interface that allows external applications to interact with Siemens WinCC runtime data using HTTP requests. It uses standard web principles, making WinCC data accessible to almost any modern programming language or IT platform. Core Architecture HTTP/HTTPS Data Format: JSON (JavaScript Object Notation) In a demo, a Python script with requests
Exposing your WinCC plant to any network requires rigor.
