Industrial MQTT topic design: names, payloads and data contracts
Design a stable telemetry namespace with identity, timestamps, units, quality and schema ownership before connecting dashboards and consumers.
MQTT
MQTT messaging for telemetry, UNS architectures, and device connectivity.
Learning paths & worksheets: Industrial data connectivity: from register to consumer · Industrial data contract template
Industrial MQTT gateway checklist for a brownfield plant
The decisions that matter before an MQTT edge gateway leaves the lab: protocol drivers, buffering, namespaces, quality, security, and ownership.
The unified namespace, explained
One broker, one topic tree, every producer and consumer decoupled. What a UNS is, what it demands, and where it goes wrong.
Sparkplug B in one page
The topic namespace, birth certificates, and state awareness that turn MQTT from a transport into a plug-and-play OT data fabric.
OPC UA, MQTT, and Sparkplug B: how they fit together
Three technologies that get compared as rivals but usually work as layers. What each one owns, and how to stop choosing between them.
MQTT QoS, retained messages, and sessions, explained
The three MQTT features that decide whether your telemetry is lossy, stale, or exactly-once — and when each setting is correct.
Edge gateway patterns for brownfield connectivity
Protocol conversion, buffering, and context at the edge — the four gateway patterns that connect legacy equipment to modern platforms.
MQTT: the standard for IoT messaging
The MQTT organization homepage: protocol resources, version history, and links to brokers, clients, and the OASIS standard.
Eclipse Sparkplug — specification and resources
The Eclipse Sparkplug project: specification, TCK, compatible products, and working-group resources for MQTT-based OT interoperability.
HiveMQ Blog — MQTT in depth
HiveMQ's technical blog: MQTT features, Sparkplug, broker operations, and IIoT architecture at scale.
OptoBlog — edge & IIoT practices
Opto 22's OptoBlog: edge devices, Node-RED, MQTT/Sparkplug, and practical IIoT project writeups.
Terms in this topic
- Industrial data contract
- An owned agreement about a signal’s identity, datatype, units, timestamps, quality and consumer behavior.
- MQTT
- Lightweight pub/sub transport for telemetry and events.
- QoS (MQTT)
- MQTT delivery guarantees: 0, 1, or 2.
- Retained MQTT message
- The latest retained application message stored by a broker for a topic and delivered to matching new subscribers under MQTT rules.
- Source timestamp
- The time associated with sampling or producing a value at its source.
- Topic namespace
- Governed MQTT topic hierarchy.
Related topics
Industrial IoT / IIoT · Sparkplug B · OPC UA · Edge Computing · Factory Software · Industrial Networking