DeviceWebUI CWC

DeviceWebUI is a WinCC Unified Custom Web Control for browsing device links from text files and opening them inside the HMI screen through a local proxy backend.

Repository Contents

• deploy_cwc.bat: builds and copies the CWC ZIP to the WinCC CustomControls folder
• {26B93B78-F241-492A-BCB4-85C36436DEEA}/: CWC manifest, HTML, CSS, and JavaScript
• devicewebui_local_server.py: primary local backend and proxy
• devicewebui_local_server.ps1: legacy helper variant
• start_devicewebui_local_server.bat: starts the local helper

What It Does

• reads .txt link definitions from a configured root folder
• lists device folders and files in the CWC UI
• resolves the selected file into a target URL
• proxies embedded web UIs that would normally refuse iframe embedding
• emits a single string event for the currently selected path

Expected Link File Format

The control expects text files where:

1. first non-empty line = target URL
2. second non-empty line = icon name

Icons are resolved from the Icons folder under the configured root folder.

Local Development

1. Start the helper with start_devicewebui_local_server.bat
2. Deploy the CWC with deploy_cwc.bat
3. Reload the WinCC screen or reimport the control if needed

Notes

• the Python helper is the active backend
• the PowerShell helper is kept only as a fallback/reference
• dynamic public websites are best-effort through the proxy; device UIs are the main target