OPC-UA
9 articles tagged "OPC-UA" on the OPC-UA Explorer blog.
This collection brings together every OPC-UA article published on the OPC-UA Explorer blog. "OPC UA vs OPC Classic (DA): Why the Upgrade Matters", "OPC UA Information Model: Nodes, Objects, and the Address Space", "OPC UA Security: Certificates, Encryption, and Auth Setup" — each one is a practical, hands-on guide written for engineers and system integrators who work with OPC-UA Explorer in real industrial deployments. Whether you are choosing between protocols, troubleshooting a connection, or planning an integration, these articles cover the concepts, the trade-offs, and the step-by-step details you need.
OPC UA vs OPC Classic (DA): Why the Upgrade Matters
OPC UA vs OPC Classic (DA) compared. Platform-independent transport, built-in security, rich information model, and why migrating from COM-based OPC DA to OPC UA matters.
Read articleOPC UA Information Model: Nodes, Objects, and the Address Space
OPC UA information model explained. Nodes, objects, variables, type system, the address space, references, and companion specifications. How UA self-describes data.
Read articleOPC UA Security: Certificates, Encryption, and Auth Setup
OPC UA security explained. Security modes (None, Sign, SignAndEncrypt), security policies, X.509 certificates, mutual authentication, trust lists, and secure setup.
Read articleHow to Browse an OPC UA Server Address Space
How to browse an OPC UA server address space. Connect, get endpoints, open a session, browse nodes by reference, find variables, and read values on any platform.
Read articleOPC UA Subscriptions and Monitored Items: Subscribe to Variable Changes
OPC UA subscriptions and monitored items explained. Publishing interval, sampling, data-change filters, and why subscribe beats poll for live monitoring.
Read articleOPC UA Companion Specifications: How UA Models Real Industries
How OPC Foundation collaborations with industry bodies (VDMA, PLCopen, VDW, BACnet) add typed, domain-specific information models so multi-vendor equipment interoperates without per-vendor register maps.
Read articleOPC UA vs Modbus TCP: Which Industrial Protocol to Choose
Modbus TCP and OPC UA compared on data model, security, discovery, transport, scalability, and best-fit use cases — plus the gateway-aggregation pattern most plants actually run.
Read articleOPC-UA vs MQTT for Industrial IoT: Which Should You Choose
OPC-UA for rich plant-floor integration and SCADA; MQTT for lightweight multi-site telemetry. Data models, security, bandwidth, and when each protocol wins.
Read articleOPC-UA Explorer for macOS: Browse OPC-UA Servers Without UA Expert
Browse OPC-UA address spaces, subscribe to variable changes, and read/write node attributes on macOS. Connect to any OPC-UA server without Windows tools.
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