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OPC UA with Python

OPC UA server stores data and clients read and write data for real-time monitoring and control applications. OPC (Object Linking and Embedding (OLE) for Process Control) is commonly used with a Distributed Control Systems (DCS), Programmable Logic Controllers (PLCs), Human Machine Interfaces (HMIs), and other data transfer applications. It is a newer standard than the older Modbus protocol. OPC UA is platform independent version while OPC DA or OPC HDA (older version) relies on the Microsoft DCOM communication that has inadequate security controls and is not cross-platform. OPC UA support access to current data as well as historical events, multiple hierarchies, and provides commands (methods and programs). The opcua Python package is a full-featured set of methods that include an OPC UA server and OPC UA client. Install the opcua, opcua-client, and opcua-webclient packages with pip from PyPI repositories. Source Code: https://apmonitor.com/dde/index.php/M...