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.
PROFIsafe Protocol: How It Works & SIL Ratings
A complete technical guide to PROFIsafe — covering the black channel principle, Safety PDU structure, CRC mechanisms, MonitoringNumber, F-Parameters, Status/Control Byte decoded, SIL/PL ratings, F-Host and F-Device architecture, and IEC 61784-3-3. Written for automation and safety engineers.
What is SCADA? How It Works, Components & Architecture
SCADA stands for Supervisory Control and Data Acquisition, a system used to monitor, control, and manage industrial processes in real-time.
Top 10 ICS Cyber Attacks Explained (Detailed Analysis & Lessons)
Explore the top 10 ICS cyber attacks including Stuxnet, Triton, and Ukraine grid attack with detailed analysis and key cybersecurity lessons.
PROFIBUS vs PROFINET: Key Differences Explained
A detailed technical comparison of PROFIBUS vs PROFINET — covering physical layer, speed, topology, real-time classes, device models, diagnostics, safety, and application profiles. Based on IEC 61784-1 and IEC 61784-2. Written for automation engineers.
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.
ICS Network Architecture Explained: Purdue Model Guide
Learn how the Purdue Model organizes ICS network architecture and helps secure industrial control systems using layered cybersecurity design.
What Is an Industrial Control System (ICS)?
Learn what an Industrial Control System (ICS) is, how it works, and why securing ICS is critical for modern industrial infrastructure.
CIP Protocol Ports: How EtherNet/IP Uses Ports 44818 and 2222
CIP Protocol Ports explained: learn how EtherNet/IP uses ports 44818 and 2222 to transport CIP messages for configuration, diagnostics, and real-time I/O communication.
SCADA Network Architecture Design Guide for Substations & Industry
Learn how to design a secure and reliable SCADA network architecture for substations and industrial systems with redundancy and cybersecurity best practices.
Modbus Troubleshooting in SCADA — 15 Real Field Problems Engineers Face
Practical Modbus troubleshooting guide for SCADA engineers. Learn 15 real field problems, exception errors, RS-485 issues, and proven solutions to fix communication fast.
Ring-based Redundancy Protocol (RRP) Explained – IEC 62439-7 Ethernet Ring Redundancy
Learn how Ring-based Redundancy Protocol (RRP) works in industrial Ethernet networks, including topology, failure recovery, and IEC 62439-7 basics.
Distribution Management System (DMS): Functions, Architecture, Benefits & Standards
Learn what a Distribution Management System (DMS) is, how it works, its functions, architecture, benefits, and the role of IEC 61968 and CIM standards.
Energy Management System (EMS): Functions, Architecture, Benefits & Standards
Learn what an Energy Management System (EMS) is, how it works, its functions, architecture, benefits, and the role of IEC 61970 and CIM standards.
Port 22 (SSH): What It Is, How to Change and Secure It
Port 22 is the default TCP port for SSH. What runs on it, why SSH uses 22, how to change it, firewall rules, testing commands, and how to secure it.
WireGuard vs OpenVPN for SCADA Systems: Key Differences
Compare WireGuard vs OpenVPN for SCADA systems, including DNP3 and IEC-104 behavior, latency, reliability, and secure UDP vs TCP design.
4 Best IEC 61850 Test Software for GOOSE & MMS (Engineers’ Guide)
**61850 Test Software** is essential for validating communication, interoperability, and correct behavior in modern digital substations. From GOOSE messaging and MMS communication
Best Free SCADA Software in 2026: 12 Open-Source and Free Platforms Compared
Compare 12 free SCADA software platforms for 2026. Covers Rapid SCADA, SCADA-LTS, JSON-SCADA, Ignition, and more with protocols, tag limits, and download links.
Securing IEC-104 Traffic Over OpenVPN: A Complete Technical Guide for Modern Critical Infrastructure
Secure IEC-104 systems with a modern OpenVPN site-to-site architecture. Learn cryptography, routing, LTE deployment, and best practices for utility networks.