Industrial systems are under attack. Cyberattacks on manufacturing, energy, and critical infrastructure have surged in recent years. Legacy protocols like Modbus and OPC Classic offer zero protection — data travels in plain text with no authentication. OPC UA was designed to fix this. Security isn’t an add-on or a third-party patch. It’s built into the core of the… Read More: OPC UA Security: How It Works and Best Practices »
OPC UA services are the operations that make everything happen. When a client reads a temperature value, subscribes to alarms, calls a method on a remote machine, or browses a server’s data structure — it’s using OPC UA services. Services are defined in IEC 62541 Part 4. They’re abstract — meaning the standard describes what each service does… Read More: OPC UA Services Explained: The Complete Guide to All 10… »
You have an OPC UA server on a PLC, and you need to confirm it exposes what the vendor promised. So you need a client. The good OPC UA clients are free. That is not the hard part. The hard part is that your first connection almost always fails — and not for a reason any tool comparison… Read More: Free OPC UA Client: 6 Tools Compared and Tested »
If you’ve ever tried to read data from an OPC UA server, you’ve already interacted with the address space — even if you didn’t realize it. The address space is the core of what makes OPC UA different from simpler protocols. It’s not just a flat list of tags. It’s a structured, self-describing map of everything a server… Read More: OPC UA Address Space and Information Modeling Explained »
The OPC Unified Architecture (OPC UA) defines a platform-independent, service-oriented architecture for secure and reliable data exchange in industrial automation systems. The architectural concepts of OPC UA are standardized in the IEC 62541 series, which specifies the communication models, information modeling framework, services, and security mechanisms used to implement interoperable industrial communication systems. Unlike legacy OPC specifications that… Read More: OPC UA Architecture Explained: Complete IEC 62541 Architecture Guide »
Modern industrial systems require reliable, secure, and vendor-independent communication between controllers, sensors, SCADA platforms, historians, and enterprise systems. Traditional industrial protocols were often designed for specific vendors or platforms, which created interoperability limitations. The OPC UA protocol (Open Platform Communications Unified Architecture) solves this challenge by providing a standardized, secure, and platform-independent communication framework for industrial automation systems.… Read More: What Is OPC UA Protocol? Architecture, Security, Address Space and… »