Blog
68 articles in the Blog category.
ICCP vs IEC 61850: Two MMS Protocols, Two Jobs
ICCP vs IEC 61850 compared: why both run MMS on port 102, how their data models differ, control and reporting differences, and where the two meet in a utility.
Industrial Dashboard Software: 6 Tools Compared
Industrial dashboard software compared: Grafana, PI Vision, Canary Axiom, Node-RED, FUXA and ThingsBoard, with protocol reach, cost and where each one fits.
Most Popular SCADA Systems and Where Each One Fits
Most popular SCADA systems compared: Ignition, WinCC, iFIX, AVEVA, FactoryTalk, MicroSCADA X and more, with protocol support, licensing, and fit notes.
SCADA as a Service Explained: Cloud SCADA for Utilities
SCADA as a Service explained: what SaaS means for grid control systems, which functions can move to the cloud, and which have to stay on the plant floor.
ADMS Vendors: Schneider vs Siemens vs GE vs Hitachi
ADMS vendors compared: Schneider EcoStruxure, Siemens Spectrum Power, GE Vernova GridOS, and Hitachi Network Manager. Architecture, DER, and protocols.
What Is an ADMS? Advanced Distribution Management System
ADMS platforms merge SCADA, DMS, and OMS into one real-time control system. Learn the architecture, core applications, protocols, and how vendors compare.
What Is a Communication Protocol? Rules, Types, Examples
Communication protocol basics: what it is, how services and protocols differ, how a message moves layer by layer, and the main types used in IT and industry.
What Is RabbitMQ? The AMQP Message Broker, Explained
RabbitMQ is an open source message broker built on AMQP 0-9-1. See how its routing model works, what the core objects do, and where it fits in real systems.
MQTT Broker Redundancy and High Availability: Complete Guide
MQTT broker redundancy explained: clustering, bridging, active/passive failover, load balancing, client-side patterns, and broker-specific recommendations for HA.
IEC 61131-3: The Complete Guide to PLC Programming Languages
IEC 61131-3 defines how PLCs are programmed — the languages, data types, function blocks, and software model. A complete guide, current to the 2025 fourth edition.
Modbus to MQTT: How the Gateway Bridge Works
Modbus to MQTT explained: how a gateway maps registers to topics, builds JSON payloads, and handles reads, writes, QoS and TLS. With a worked example.
What Is Sparkplug B? A Complete Guide to MQTT for Industrial IoT
Sparkplug B explained: the Eclipse Foundation MQTT specification for industrial IoT, topic namespace, protobuf payload, birth/death certificates, and state management.
Python MQTT: Complete Guide to paho-mqtt 2.x
Python MQTT with paho-mqtt 2.x: connect, publish, subscribe, QoS, TLS, JSON, reconnection and common errors. Working code plus the 2026 API change.
Null Modem Cable Pinout: DB9 & DB25 Wiring Reference
Null modem cable pinout for DB9 and DB25 connectors. See 3-wire, loopback, and full handshaking wiring, plus how it differs from a straight cable.
XON and XOFF: Software Flow Control Explained
XON and XOFF are the two characters behind serial software flow control. See the DC1/DC3 codes, the pause-resume cycle, and when to use it vs RTS/CTS.
What Is AMQP 0.9.1? A Complete Guide to the Protocol
AMQP 0.9.1 explained: the RabbitMQ protocol, exchanges, queues, bindings, routing keys, delivery guarantees, and why it remains widely used despite AMQP 1.0.
MQTT vs AMQP: A Complete Comparison
MQTT vs AMQP compared: the differences between MQTT and both AMQP 0.9.1 and AMQP 1.0, feature by feature, with honest guidance on which fits which use case.
What Is AMQP 1.0? A Complete Guide to the Protocol
AMQP 1.0 explained: the ISO/IEC 19464 messaging protocol, its peer-to-peer model, nodes, links, delivery guarantees, security, and how it compares to alternatives.
HTTP vs MQTT: Which to Use for Real-Time Messaging
HTTP vs MQTT compared for real-time messaging: long polling, SSE, WebSockets, and MQTT weighed on latency, scale, direction, and delivery guarantees.
Open Source MQTT Broker: Mosquitto vs EMQX vs HiveMQ CE vs VerneMQ
Open source MQTT brokers compared: Mosquitto, EMQX, HiveMQ CE, and VerneMQ. Features, licenses, clustering, Sparkplug B, and honest guidance on when to pick each.
SCADA and ICS: The Difference and How They Fit Together
SCADA and ICS are not the same thing: SCADA is one type of ICS. See how SCADA, DCS, and PLC systems fit inside ICS and OT, per NIST and IEC definitions.
Free FTP Clients: Which One Fits the Job You Do
FileZilla, WinSCP, curl, lftp, Cyberduck — all free. Which FTP client fits your job, which support SFTP, and which to use for scripts and field work.
FTP Explained: How File Transfer Protocol Works
How FTP really works: the two-connection model, active vs passive mode, commands, reply codes, and why FTP fails security audits. Plus FTP vs FTPS vs SFTP.
EtherNet/IP vs Modbus TCP: Complete Comparison Guide
EtherNet/IP vs Modbus TCP: detailed comparison of data models, performance, ports, security, deployment scenarios. When to choose which protocol.
MQTT 5 vs MQTT 3.1.1: Differences, Features & Migration
MQTT 5 vs MQTT 3.1.1 compared: every difference, every new feature, behavioral changes, packet-level changes, and how to decide which version to use.
RS-232 DB9 Pinout: Signal Reference, Wiring, and Field Troubleshooting
he full RS-232 DB9 (DE-9) pinout with signal directions, voltage levels, null modem vs straight-through wiring, and industrial troubleshooting.
CIP Safety vs PROFIsafe: An Honest Comparison of SIL3 Safety Protocols
CIP Safety vs PROFIsafe: real technical differences in addressing, time monitoring, engineering tools, ecosystem, and when to pick which. Vendor-neutral.
Top 10 Free Modbus Simulators
Top 10 free Modbus simulators for RTU and TCP testing — slave and master tools with setup steps, command-line examples, and download links.
PROFINET vs EtherNet/IP: Complete Comparison for Industrial Engineers
PROFINET vs EtherNet/IP compared: protocol architecture, real-time performance, GSDML vs EDS, PROFIsafe vs CIP Safety, installed base, and when to choose each.
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.
SCADA Security: Complete Guide to Protecting Control Systems
Learn how to secure SCADA systems from cyber threats. Covers network segmentation, remote access, IEC 62443 zones, real attacks, and a practical checklist.
How to Configure DNP3 Communication Between Master and Outstation
Learn how to configure DNP3 master and outstation communication step by step. Covers addressing, polling, unsolicited responses, TCP/IP setup, and security.
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.
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.
Coding Modbus TCP/IP for Arduino: A Complete Technical Guide
Complete guide to coding Modbus TCP/IP on Arduino. Learn protocol structure, implement client/server, practical examples, troubleshooting. Perfect for industrial automation projects.
PROFIBUS vs Modbus: Complete Technical Comparison for Engineers
A thorough technical comparison of PROFIBUS vs Modbus — covering protocol architecture, message framing, function codes, CRC methods, speed, diagnostics, network topology, and when to choose each. Based on the original Modicon Modbus specification and IEC 61784-1.
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.
DNP3 vs IEC 61850: Full Technical Comparison of SCADA and Digital Substation Protocols
DNP3-IP, designed for distribution SCADA and remote telemetry, and IEC 61850, built for advanced substation automation and high-speed protection schemes.
How to Monitor SCADA Protocol Traffic (Modbus RTU/TCP, IEC-104, DNP3, IEC-61850)
Learn how to monitor Modbus, IEC-104, DNP3, and IEC 61850 traffic. Capture and analyze SCADA communication over serial and TCP/IP for reliable system performance.
IEC 104 News 2026: Standard Updates, Security & NIS2 Compliance
Stay updated with the latest IEC 104 news for 2026, including IEC TS 60870-5-7 security extensions, standard status, testing updates, and SCADA interoperability.
DNP3 vs IEC 60870-5-104: Which Protocol Is Better for SCADA?
Compare DNP3 and IEC 60870-5-104 for SCADA systems—learn differences in architecture, performance, security, and use cases to choose the best protocol.
Modbus over RS485 Communication Frequency and Baud Rate
Modbus over RS485 communication frequency explained: real baud rate limits, bit timing, cable length, and how to size your poll cycle correctly in the field.
IEC-101 vs IEC-104 — Key Differences Explained
Clear technical comparison of IEC-101 vs IEC-104, explaining key differences, communication flow, and how IEC-101 to IEC-104 conversion works.
Zero-Trust Architecture for SCADA — Securing IEC 60870-5-104 Systems
Adopt Zero-Trust Architecture for SCADA and IEC 60870-5-104 systems to secure networks, authenticate devices, and prevent insider and external threats.
RS232 vs RS485: Key Differences, Comparison, and Pinout Explained
Compare RS232 vs RS485 communication standards — learn key differences in wiring, pinouts, speed, distance, and applications for serial devices.
RS-485 Wiring Guide: Best Practices, Installation Steps, and Common Mistakes to Avoid
Learn RS-485 wiring best practices with our complete installation guide. Discover tips, diagrams, and common mistakes to ensure reliable network performance.
DNP3 vs. IEC 60870-5-101: Key Differences and Similarities in SCADA Protocols
Dive into the key differences and similarities between DNP3 and IEC 60870-5-101 protocols for SCADA/ICS systems, covering addressing, security, interoperability, and more.
Modbus vs DNP3: A Technical Comparison for SCADA Engineers
Technical comparison of Modbus vs DNP3 (IEEE 1815) protocols covering architecture, communication layers, reliability, and cybersecurity.
Python Modbus Libraries Comparison: The Complete 2025 Guide
Compare top Python Modbus libraries—PyModbus, MinimalModbus, Modbus-tk, and more—to choose the best library for your industrial or IoT project.
Best Free Modbus Software: 10 Tools for RTU and TCP Testing
Best free Modbus software for engineers: 10 tools for RTU, TCP, and ASCII testing. Master utilities, slave simulators, sniffers, and monitors compared.
RS-485 vs Ethernet: Choosing the Right Network for Modbus
Compare RS-485 vs Ethernet for Modbus communication. Learn key differences, pros, and best use cases to choose the right Modbus network for your system.