to bridge the gap between industrial automation (OT) and IT systems. It allows external applications—like ERPs, MES, or mobile apps—to read and write SCADA data using standard web protocols like HTTP/HTTPS and JSON. www.siemens.com Two-Way Communication in WinCC V8
During FAT (Factory Acceptance Test), a Python script uses the REST API to inject values into WinCC, simulate faults, and verify HMI reactions—all without touching the operator panel.
import requests import json
Access requires valid credentials. The API typically utilizes token-based authentication (such as JSON Web Tokens or OAuth2 mechanisms). Users must authenticate against the WinCC User Management system to receive a token for subsequent requests. wincc rest api
The is a transformative interface for modern industrial automation, allowing external applications to securely interact with SCADA data using standard web technologies. Traditionally, accessing Siemens WinCC data required complex proprietary drivers or OLE DB connections; however, the introduction of the REST interface in WinCC V7.5 SP2 and WinCC V8.0 has simplified this process by utilizing universal HTTP methods and JSON data structures. Core Capabilities of the WinCC REST Interface
: Query active alarms, historical logs, and remotely acknowledge alerts.
Before interacting with the WinCC REST API, the WinCC project and the host machine must be properly configured. 1. License Requirements to bridge the gap between industrial automation (OT)
Using the method in the WinCC REST API (introduced in WinCC V8.0) is primarily used for writing tag values to the Runtime or for initial authentication . Key Uses for POST
to read specific tag logging archives. Troubleshoot security settings for your HTTPS connection. Let me know your specific scenario! How to configure the WinCC REST service - ID: 109818894
Set up a secure connection (e.g., VPN or encrypted tunnel) for IT/OT integration. The is a transformative interface for modern industrial
Let’s assume your WinCC server is at http://192.168.1.100 . Here are the critical REST endpoints.
Which are you targeting (e.g., WinCC Unified, WinCC V7/V8, or WinCC Professional)?
