Blog
Historical Data Logging with OPC UA and InfluxDB
Learn how to connect OPC UA and InfluxDB in FlowFuse to log industrial equipment data as timestamped history, so you can spot trends, prove compliance, and catch failures before they happen.
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OPC UA Security: How to Establish a Defensible OPC UA Security Architecture
Turn every OPC UA attack vector into a configuration decision you control: Reverse Connect to keep the firewall closed, enforced trust lists, SignAndEncrypt, GDS certificate management, RBAC, and the field anti-patterns that quietly undo all of it.
OPC UA Security: How Threat Actors Exploit Industrial Protocol Vulnerabilities
Most OPC UA breaches don't crack the protocol's encryption. They walk through disabled trust lists, anonymous logins, stale ciphers, and servers left on the open internet. This post breaks down how attackers actually exploit OPC UA, vector by vector, drawing on research from Claroty, Bitsight, CISPA, Secura, and Kaspersky.
Why OPC UA Is Not Replacing Modbus (Yet)
OPC UA has every technical advantage. Modbus is still winning. Here's why the replacement hasn't happened and what would actually change that.
Agentic AI Reads OPC UA Servers So You Don't Have To
Learn how agentic AI transforms OPC UA server investigations, automating data access, analysis, and root cause detection to turn hours of manual work into minutes.
MQTT vs OPC UA: Why This Question Never Has a Straight Answer
MQTT vs OPC UA isn't a real choice; they solve different problems. Learn when to use each protocol based on your actual requirements, not vendor marketing.
Beyond Kepware: Why Modern Industrial Connectivity Demands a Second Look
Kepware became the default when industrial connectivity was hard. Today, its pricing model, scaling costs, and private-equity ownership make it a growing risk. Here's why it's time to re-evaluate.
OPC UA Tutorial: Advanced Monitoring with Subscriptions, Alarms, and Historical Data
Learn advanced OPC UA techniques in Node-RED: real-time subscriptions, alarm handling, historical data queries, and method calls for production-ready industrial systems.
OPC UA Tutorial: Connect and Exchange Data with Industrial Equipment
OPC UA tutorial: Connect Node-RED to industrial PLCs step-by-step. Configure Kepware endpoints, read/write Siemens S7 tags, browse Allen-Bradley data. Free guide.
Node-RED Serial Port Tutorial: Connect RS232/RS485 Manufacturing Equipment (2026)
Learn how to connect manufacturing equipment using serial interfaces like RS-232/422/485 in Node-RED with FlowFuse. Enable monitoring, data collection, and automation, no hardware changes required
Bridging OPC UA Data to MQTT with Node-RED (2026)
Learn how to bridge OPC UA data to MQTT using Node-RED for seamless industrial IoT integration and real-time data flow.
Connect Node-RED to KepserverEX OPC server.
Follow a step-by-step guide to seamlessly integrate Node-RED with PTC's Kepware OPC server, enabling efficient data extraction from PLCs.
How to Build an OPC UA Client Dashboard in Node-RED - Part 3 (2026)
Building a Dashboard-Driven OPC UA Client to Browse, Read, Write, and Get Events from a 3rd party OPC UA Server
How to Deploy a Basic OPC-UA Server in Node-RED - Part 1 (2026)
Introduction to OPC-UA and how to deploy a Node-RED server flow.