[{"data":1,"prerenderedAt":256},["ShallowReactive",2],{"blog-\u002Fblog\u002Fopcua":3,"blog-all-for-related":4,"blog-all-opcua":5},null,[],[6,43,54,69,80,94,113,128,148,164,184,200,215,241],{"path":7,"title":8,"date":9,"tags":10,"authors":14,"description":16,"meta":17,"image":42},"\u002Fblog\u002F2026\u002F06\u002Fopcua-to-influxdb","Historical Data Logging with OPC UA and InfluxDB","2026-06-24",[11,12,13],"post","flowfuse","opcua",[15],"sumit-shinde","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.",{"keywords":18,"excerpt":19},"opc ua influxdb, opc ua historical data, influxdb node-red, flowfuse opc ua, industrial data logging, opc ua time series, node-red influxdb, log opc ua data, equipment data history, iiot data logging",{"type":20,"value":21},"minimark",[22,26],[23,24,25],"p",{},"Industrial equipment produces data constantly: temperatures, pressures, motor speeds, tank levels, all changing by the second. Real-time values tell you what's happening now, but the history is where the value lives, spotting a degrading pump, proving a batch stayed within spec, tracing the conditions behind a fault. OPC UA gets that data out of your equipment in a vendor-neutral way, and InfluxDB stores it as timestamped history built to query at scale. In this article, you'll connect the two in FlowFuse to turn live readings into a durable record you can query, chart, and analyze.",[27,28,29],"blockquote",{},[23,30,31,35,36,41],{},[32,33,34],"strong",{},"Note:"," If you'd rather not leave FlowFuse and want a good time-series database built in, ",[37,38,40],"a",{"href":39},"\u002Fdocs\u002Fuser\u002Fff-tables\u002F","FlowFuse Tables"," is the answer.","\u002Fblog\u002F2026\u002F06\u002Fimages\u002Fopcua-to-influxdb.png",{"path":44,"title":45,"date":46,"tags":47,"authors":49,"description":50,"meta":51,"image":53},"\u002Fblog\u002F2026\u002F06\u002Fopc-ua-security-best-practices","OPC UA Security: How to Establish a Defensible OPC UA Security Architecture","2026-06-05",[11,13,48],"security",[15],"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.",{"keywords":52},"opc ua security, opc ua security architecture, opc ua reverse connect, opc ua certificate management, opc ua trust list, opc ua gds, opc ua signandencrypt, opc ua rbac, defensible opc ua, opc ua best practices, industrial security, iiot security","\u002Fblog\u002F2026\u002F06\u002Fimages\u002Fopc-ua-security.png",{"path":55,"title":56,"date":57,"tags":58,"authors":60,"description":61,"meta":62,"image":68},"\u002Fblog\u002F2026\u002F05\u002Fopc-ua-security-attack-vectors","OPC UA Security: How Threat Actors Exploit Industrial Protocol Vulnerabilities","2026-05-29",[59,12,13],"posts",[15],"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.",{"excerpt":63},{"type":20,"value":64},[65],[23,66,67],{},"Threat actors don't break OPC UA's cryptography. They walk through the security it left switched off. The attacks that work in the field are disabled trust lists, anonymous logins left on, dead ciphers nobody removed, and servers sitting on the open internet. This post breaks down how attackers actually exploit OPC UA, vector by vector.","\u002Fblog\u002F2026\u002F05\u002Fimages\u002Fopcua-security-blog.png",{"path":70,"title":71,"date":72,"tags":73,"authors":75,"description":76,"meta":77,"image":79},"\u002Fblog\u002F2026\u002F03\u002Fwhy-opcua-is-not-replacing-modbus-yet","Why OPC UA Is Not Replacing Modbus (Yet)","2026-03-30",[12,13,74],"modbus",[15],"OPC UA has every technical advantage. Modbus is still winning. Here's why the replacement hasn't happened and what would actually change that.",{"keywords":78},"opc ua, modbus, industrial automation, protocol comparison, field devices, scada, mes, industrial protocols, gateway architecture, edge computing, node-red, mqtt, industrial security, certificate management, interoperability","\u002Fblog\u002F2026\u002F03\u002Fimages\u002Fopcua-is-not-replacing-modbus-yet.png",{"path":81,"title":82,"date":83,"tags":84,"authors":85,"description":86,"meta":87,"image":3},"\u002Fblog\u002F2026\u002F01\u002Feliminate-opc-ua-bottleneck-ai-agents","Agentic AI Reads OPC UA Servers So You Don't Have To","2026-01-30",[12,13],[15],"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.",{"keywords":88,"excerpt":89},"OPC UA, AI Agents, MCP, FlowFuse, Industrial IoT, Root Cause Analysis, Node-RED.",{"type":20,"value":90},[91],[23,92,93],{},"OPC UA servers store everything. Finding anything takes hours.",{"path":95,"title":96,"date":97,"tags":98,"authors":100,"description":101,"meta":102,"image":112},"\u002Fblog\u002F2026\u002F01\u002Fopcua-vs-mqtt","MQTT vs OPC UA: Why This Question Never Has a Straight Answer","2026-01-21",[12,13,99],"mqtt",[15],"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.",{"keywords":103,"excerpt":104},"MQTT vs OPC UA, MQTT protocol, OPC UA protocol, industrial communication, IIoT architecture, OPC UA PubSub, MQTT Sparkplug",{"type":20,"value":105},[106,109],[23,107,108],{},"The question itself is broken.",[23,110,111],{},"MQTT moves messages. OPC UA defines meaning. They operate at different layers of the stack. Comparing them is like comparing TCP to JSON.","\u002Fblog\u002F2026\u002F01\u002Fimages\u002Fopcua-vs-mqtt.png",{"path":114,"title":115,"date":116,"tags":117,"authors":118,"description":119,"meta":120,"image":127},"\u002Fblog\u002F2026\u002F01\u002Fkepware-opcua-better-alternative","Beyond Kepware: Why Modern Industrial Connectivity Demands a Second Look","2026-01-16",[12,13],[15],"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.",{"keywords":121,"excerpt":122},"kepware alternatives, opc ua server, industrial connectivity, per-tag pricing, plc data integration, industrial middleware, ot-it convergence",{"type":20,"value":123},[124],[23,125,126],{},"Kepware isn't chosen, it's assumed. It appears in budgets like line items for electricity or insurance. No one questions it. No one compares it. It just... goes in.","\u002Fblog\u002F2026\u002F01\u002Fimages\u002Fkepware-alternative.png",{"path":129,"title":130,"date":131,"tags":132,"authors":133,"description":134,"meta":135,"image":147},"\u002Fblog\u002F2025\u002F08\u002Fadvanced-opcua-real-time-subscriptions-alarms-historical-data","OPC UA Tutorial: Advanced Monitoring with Subscriptions, Alarms, and Historical Data","2025-08-14",[12,13],[15],"Learn advanced OPC UA techniques in Node-RED: real-time subscriptions, alarm handling, historical data queries, and method calls for production-ready industrial systems.",{"keywords":136,"excerpt":137},"OPC UA subscriptions Node-RED, OPC UA events alarms, OPC UA historical data, OPC UA method calls, real-time monitoring OPC UA, industrial automation advanced, OPC UA HA redundancy, OPC UA performance optimization",{"type":20,"value":138},[139],[23,140,141,142,146],{},"In our ",[37,143,145],{"href":144},"\u002Fblog\u002F2025\u002F07\u002Freading-and-writing-plc-data-using-opc-ua\u002F","previous tutorial",", we covered OPC UA basics, connecting to servers, reading tags, and writing values. Now it's time for the features that make OPC UA truly powerful in production.","\u002Fblog\u002F2025\u002F08\u002Fimages\u002Fadvanced-opcua-real-time-subscriptions-alarms-historical-data.png",{"path":149,"title":150,"date":151,"tags":152,"authors":154,"description":155,"meta":156,"image":163},"\u002Fblog\u002F2025\u002F07\u002Freading-and-writing-plc-data-using-opc-ua","OPC UA Tutorial: Connect and Exchange Data with Industrial Equipment","2025-07-16",[12,13,153],"plc",[15],"OPC UA tutorial: Connect Node-RED to industrial PLCs step-by-step. Configure Kepware endpoints, read\u002Fwrite Siemens S7 tags, browse Allen-Bradley data. Free guide.",{"keywords":157,"excerpt":158},"OPC UA Node-RED tutorial, connect PLC to Node-RED, OPC UA example, Node-RED industrial IoT, OPC UA browser Node-RED, read PLC data Node-RED, OPC UA client configuration, Kepware Node-RED, OPC UA port 4840, industrial automation tutorial",{"type":20,"value":159},[160],[23,161,162],{},"If you’ve ever tried to connect industrial equipment from different vendors, you know how frustrating it can be, a mess of incompatible protocols, proprietary software, and confusing drivers. Your Siemens PLC speaks one language, your Allen-Bradley controller another, and that Modbus sensor? Yet another protocol entirely.","\u002Fblog\u002F2025\u002F07\u002Fimages\u002Fopcua-tutorial.png",{"path":165,"title":166,"date":167,"tags":168,"authors":170,"description":171,"meta":172,"image":183},"\u002Fblog\u002F2025\u002F07\u002Fconnect-legacy-equipment-serial-flowfuse","Node-RED Serial Port Tutorial: Connect RS232\u002FRS485 Manufacturing Equipment (2026)","2025-07-09",[12,13,169],"how-to",[15],"Learn how to connect manufacturing equipment using serial interfaces like RS-232\u002F422\u002F485 in Node-RED with FlowFuse. Enable monitoring, data collection, and automation, no hardware changes required",{"keywords":173,"excerpt":174},"node-red, serial communication, rs232, rs485, rs422, modbus, industrial automation, flowfuse, legacy equipment, machine data collection, manufacturing connectivity, serial port integration, factory floor monitoring, serial devices, equipment integration",{"type":20,"value":175},[176],[23,177,178,179,182],{},"Many factories rely on machines, both new and old, that communicate via traditional serial interfaces such as ",[32,180,181],{},"RS-232, RS-422, or RS-485",". These machines remain reliable but can be challenging to integrate with modern systems due to their connectivity style.","\u002Fblog\u002F2025\u002F07\u002Fimages\u002Fconnect-serial-port-node-red-ff.png",{"path":185,"title":186,"date":187,"tags":188,"authors":190,"description":191,"meta":192,"image":199},"\u002Fblog\u002F2024\u002F08\u002Fopc-ua-to-mqtt-with-node-red","Bridging OPC UA Data to MQTT with Node-RED (2026)","2024-08-13",[59,189,99,13,169],"node-red",[15],"Learn how to bridge OPC UA data to MQTT using Node-RED for seamless industrial IoT integration and real-time data flow.",{"keywords":193,"excerpt":194},"opc ua gateway, opc ua example, node-red-contrib-opcua, nodered opcua, opc ua mqtt, opc ua over mqtt, opc ua to mqtt gateway, mqtt to opc ua, mqtt and opc ua, opc ua and mqtt, opc ua via mqtt, opcua to mqtt",{"type":20,"value":195},[196],[23,197,198],{},"Have you ever found yourself trying to connect old industrial systems with new IoT tools? This is a common scenario when trying to digitally transform while setting up your Unified Name Space. Maybe you have machinery that uses OPC UA, but your data is sent through MQTT. How do you make these systems work together smoothly?","\u002Fblog\u002F2024\u002F08\u002Fimages\u002Fbrdging-opcua-to-mqtt.png",{"path":201,"title":202,"date":203,"tags":204,"authors":205,"description":207,"meta":208,"image":214},"\u002Fblog\u002F2024\u002F02\u002Fconnect-node-red-to-kepware-opc","Connect Node-RED to KepserverEX OPC server.","2024-02-12",[59,12,13],[206],"grey-dziuba","Follow a step-by-step guide to seamlessly integrate Node-RED with PTC's Kepware OPC server, enabling efficient data extraction from PLCs.",{"excerpt":209},{"type":20,"value":210},[211],[23,212,213],{},"KepserverEX, often referred to as Kepware, is an OPC server that has been the important tool many manufacturing companies have used on their digital transformation journey.  It plays an important role for many to extract data from PLCs, Programmable Logic Controllers, without having to directly interact with them.","\u002Fblog\u002F2024\u002F02\u002Fimages\u002Fnode-red-to-kepware.png",{"path":216,"title":217,"date":218,"tags":219,"authors":220,"description":222,"meta":223,"image":240},"\u002Fblog\u002F2023\u002F07\u002Fhow-to-build-a-opc-client-dashboard-in-node-red","How to Build an OPC UA Client Dashboard in Node-RED - Part 3 (2026)","2023-07-27",[59,12,189,13,169],[221],"richard-meyer","Building a Dashboard-Driven OPC UA Client to Browse, Read, Write, and Get Events from a 3rd party OPC UA Server",{"keywords":224,"excerpt":225},"opc ua client node-red, opc ua dashboard, node-red opcua client, opc ua browser node-red, read write opc ua node-red, opc ua alarms events, prosys simulation server",{"type":20,"value":226},[227],[23,228,229,230,234,235,239],{},"This article is the third and final part of our OPC UA content series. In the ",[37,231,233],{"href":232},"\u002Fblog\u002F2023\u002F07\u002Fhow-to-deploy-a-basic-opc-ua-server-in-node-red\u002F","first article",", we cover some OPC UA fundamentals and walk through an example OPC UA Server flow. In the ",[37,236,238],{"href":237},"\u002Fnode-red\u002Fprotocol\u002Fopc-ua\u002F","second article",", we built a SSL-secured OPC UA server using data from an Allen Bradley PLC as a source.\nIn this article, we show how to build an OPC Client in Node-RED that communicates with a 3rd party OPC UA Server and utilizes an interactive dashboard.","\u002Fblog\u002F2023\u002F07\u002Fimages\u002Fopc-ua-3\u002Fopc-ua-3-title-image.png",{"path":242,"title":243,"date":244,"tags":245,"authors":246,"description":247,"meta":248,"image":255},"\u002Fblog\u002F2023\u002F07\u002Fhow-to-deploy-a-basic-opc-ua-server-in-node-red","How to Deploy a Basic OPC-UA Server in Node-RED - Part 1 (2026)","2023-07-13",[59,189,13,169],[221],"Introduction to OPC-UA and how to deploy a Node-RED server flow.",{"keywords":249,"excerpt":250},"opc ua server, opc ua server free, opc ua gateway, opc ua example, node-red-contrib-opcua, nodered opcua, node red opcua, node-red opcua, opcua node red, opcua nodered",{"type":20,"value":251},[252],[23,253,254],{},"This article is the first part of a series of OPC-UA content.  Here, we will explain some basic concepts of OPC-UA as they apply to building a server in Node-RED, then walk through and deploy an example OPC-UA Server.","\u002Fblog\u002F2023\u002F07\u002Fimages\u002Fopc-ua-1\u002Fopc-ua-1-title-image.png",1785872770175]