Wincc Rest Api Info

$cred = Get-Credential $body = @tags=@("Tag1","Tag2") | ConvertTo-Json Invoke-RestMethod -Uri "https://wincc:50051/api/v1/tags/read" -Method Post -Body $body -Credential $cred -ContentType "application/json"

| Method | Endpoint | Description | |--------|------------------------------|-------------------------------------------| | GET | /tags | List all tags (paginated) | | GET | /tags/<name> | Read single tag value | | POST | /tags/read | Batch read multiple tags | | POST | /tags/write | Write one or more tags | | GET | /alarms/active | Get current active alarms | | GET | /alarms/history | Query alarm log (with filters) | | POST | /alarms/acknowledge | Acknowledge an alarm by ID | | GET | /archives/<tag>/values | Historical values over time range | | GET | /status | WinCC runtime status (running/stopped) | Request (Write tag TankLevel to 75.5): wincc rest api

Abstract As industrial environments transition toward Industry 4.0 and IIoT, traditional Human-Machine Interface (HMI) systems like Siemens WinCC must expose data via modern, platform-agnostic interfaces. This paper explores the WinCC REST API – its architecture, setup, authentication methods, endpoint structure, and practical use cases. We provide implementation examples in Python and JavaScript, discuss performance considerations, and compare the REST API with OPC UA and native WinCC interfaces. Finally, we examine security implications and future developments. 1. Introduction WinCC (Windows Control Center) by Siemens is a leading SCADA and HMI system used in manufacturing, energy, and infrastructure. Historically, data access relied on OPC (Classic/UA), proprietary DLLs (e.g., CCApi ), or database queries. However, modern web-based dashboards, mobile applications, and enterprise IT systems require stateless, HTTP-based communication. data access relied on OPC (Classic/UA)