Glossary Updates12 new terms added to the glossaries · October 2, 2026, 22:44 CEST
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Glossary · IIoT, data and AI

Node-RED

Also known as: Node RED

German: Node-RED

Node-RED is an open-source, flow-based programming tool built on Node.js in which data flows are created by wiring nodes together in a browser-based editor. Originally developed at IBM and now a project of the OpenJS Foundation, it is widely used in IIoT to connect devices, protocols and services.

  • IIoT
  • Vendor product

In one sentence

Node-RED is an open-source, browser-based flow programming tool widely used in IIoT to wire devices, protocols and services together.

Example

On an edge device, a Node-RED flow reads values from a PLC, converts them to JSON and publishes them to an MQTT broker every five seconds.

How it applies

  • Engineering: Node-RED is useful for prototypes, protocol conversion and simple data flows. Many edge devices and controllers offer it preinstalled. Contributed nodes add support for industrial protocols.
  • Operation: Flows are easy to change, which can undermine configuration control. Store flows in version control, restrict editor access and keep Node.js and nodes updated (Patch management).
  • Documentation: Export and version the flows, document their purpose, inputs and outputs, and record the installed node packages and versions.

Node-RED vs. PLC programming

Node-RED is not intended for deterministic real-time control or safety functions. Control logic belongs in the controller, programmed according to IEC 61131-3 or IEC 61499; Node-RED works alongside it for data handling.

Keep in mind: Node-RED and its node packages change frequently. Check features and security advisories against the project's current documentation.

By knowledge.aitechdoc.world · Published September 26, 2026 · Last reviewed

Source: AI TechDoc Knowledge editorial definition, based on the Node-RED project documentation

Definitions follow the cited standards and specifications. Where a source is a copyrighted publication, such as an ISO, IEC or EN standard, the definition is a close paraphrase, not a verbatim quotation, so as not to infringe copyright. We recommend reading the original publication. The sections “How it applies” are editorial commentary by AI TechDoc Knowledge and are not part of any standard.

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