Wincc Rest Api ((new)) ❲Premium Quality❳

The WinCC REST API is a modern interface introduced to simplify data exchange between Siemens WinCC SCADA systems and external IT applications like Python, web apps, or MES/ERP systems. Core Features

• Body:

• Returns list of active unacknowledged alarms.

2. Writing to a Single Tag

PUT /WinCC/REST/Tags/TagName

8. Comparison: REST API vs. OPC UA

| Feature | WinCC REST API | OPC UA | | :--- | :--- | :--- | | Protocol | HTTP/HTTPS | Binary TCP / HTTPS | | Data Format | JSON / XML | Binary / JSON | | Ease of Use | High (Any web dev can use it) | Medium (Requires OPC UA SDKs) | | Connectivity | Request/Reply (Polling) | Request/Reply & Pub/Sub (Events) | | Firewall | Friendly (Port 443) | Requires specific port openings | | Performance | Moderate | High | | Ideal Use | Dashboards, Mobile Apps, IT/OT Convergence | High-speed control, Machine-to-Machine | wincc rest api

6. Practical Examples

6.1 Authentication (Get Token)

curl -X POST https://192.168.1.100:5001/api/v1/auth/login \
  -H "Content-Type: application/json" \
  -d '"username":"operator","password":"secret"' \
  -k   # ignore self-signed certificate for testing

For the bold engineer: use it for monitoring, light control, and integration — but always put a safety PLC between your REST call and any dangerous actuator. For the pragmatic architect: keep OPC UA for core data, and use the REST API where HTTP+JSON genuinely simplifies your life. The WinCC REST API is a modern interface