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300+ SCADA Protocol Articles & Guides

Deep dives on Modbus, DNP3, IEC 60870-5-101/104, IEC 61850, OPC UA, Profinet, MQTT, IEC 62443, and substation automation — written for practicing engineers.

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Showing 1–6 of 6 articles
OPC UA

Wireshark OPC UA: Decode Client/Server Traffic

Wireshark OPC UA capture and decode: display filters, service node IDs, session and channel setup, decrypting secured traffic, and certificate failures.

Apr 10, 202610
OPC UA

OPC UA vs OPC DA: The Full Comparison Every Engineer Needs

OPC UA vs OPC DA compared across security, platform, data model, and more. See the full table, key differences explained, and when to use each protocol.

Apr 8, 20269
OPC UA

How to Connect a PLC to OPC UA: Full Setup Guide

Connect a PLC to OPC UA three ways: built-in server, gateway software, or hardware bridge. Setup for Siemens, Allen-Bradley, Beckhoff, and Schneider PLCs.

Mar 31, 20269
OPC UA

OPC Classic vs OPC UA: Key Differences and Migration Guide

OPC Classic vs OPC UA: compare security, platform support, and data modeling. Plus a practical migration guide with three strategies to fit any situation.

Mar 31, 202610
OPC UA

OPC UA vs MQTT vs Modbus: Which Protocol Should You Use?

OPC UA vs MQTT vs Modbus: Which protocol fits your project? Compare security, speed, data modeling, and scalability to pick the right one for your IIoT system.

Mar 31, 202611
OPC UA

Free OPC UA Client: 6 Tools Compared and Tested

Free OPC UA client tools compared: UaExpert, Prosys, Softing, and open-source options, plus how to fix the certificate errors that block your first connection.

Mar 14, 20269
SCADA Protocols

Practical guides, free decoders, and tools for SCADA and industrial protocols, including DNP3, IEC 60870-5, IEC 61850, Modbus, OPC UA, MQTT, and more.

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