Publish / Subscribe Architecture
Understand brokers, clients, topics and decoupled data distribution instead of point-to-point polling between every system.
Advanced IT / OT Course · MQTT · IIoT · Edge · Python · Cloud
MQTT / IIoT Communication Training for Industrial Automation
Learn MQTT for industrial IoT data exchange using broker-based publish/subscribe communication. The course covers topics, payloads, QoS, retained messages, Last Will, security, Python clients, PLC/SCADA gateways, edge architecture and reliable plant-to-cloud data flow.
MQTTIIoTBrokerPublish / SubscribeTopicsQoS 0/1/2Retained MessageLast WillTLSJSONPython
Industry 4.0 AcademyUse MQTT as an event-driven messaging layer for telemetry and IIoT data distribution between edge devices, integration services, dashboards and cloud platforms.
Course FocusDesign topic structures, publish and subscribe data, apply QoS and security, integrate PLC/SCADA data through a gateway, and troubleshoot broker/client communication.
Training ModePune classroom, online training and customized corporate / in-plant training for engineering teams.
Why Important
Why MQTT is important for IIoT and plant data distribution
MQTT is lightweight, bandwidth-efficient and based on publish/subscribe messaging. It is widely used for edge-to-cloud telemetry and for distributing industrial data to multiple consumers without tightly coupling every producer to every application.
Reliability & Security
Work with QoS, retained messages, persistent sessions, Last Will, authentication and TLS concepts for robust IIoT messaging.
Industrial Integration
Connect PLC/SCADA data to MQTT through an appropriate edge or software gateway, then consume it with Python, dashboards or cloud services.
IT / OT Architecture
Where MQTT / IIoT Communication fits in Industry 4.0
A common pattern is PLC / SCADA → edge or software gateway → MQTT broker → Python, dashboard, historian, MES or cloud subscribers. The broker decouples data producers from consumers.
PLC / SCADA
OPC UA
SQL
Python
REST API
MQTT / IIoT
MES / ERP / Cloud
MQTT / IIoT Communication 2 Weeks Curriculum
10 Practical Training Days
Applications
Industrial applications covered
Energy & Utility Monitoring
Publish energy meter, compressed-air, water, steam or other utility values to a common broker for dashboards and reporting.
Machine Telemetry
Distribute machine status, cycle count, process values and alarms from an edge gateway to multiple consumers.
Edge-to-Cloud IIoT
Move selected plant telemetry from an edge layer to cloud or centralized analytics without direct cloud access to PLC control networks.
Multi-System Data Sharing
Allow Python services, historians, dashboards and other subscribers to receive the same data stream independently.
Technical Positioning
How the technology is used in plant architecture
This comparison helps participants select the right communication layer instead of forcing one protocol into every application.
| Area | Primary Role | Typical Industrial Use |
|---|---|---|
| OPC UA | Structured industrial interoperability | Rich information model, secure client/server and subscriptions between OT/industrial systems. |
| MQTT | Broker-based publish/subscribe messaging | Lightweight telemetry, edge-to-cloud, event distribution and many-to-many data consumption. |
| REST API | Application request/response integration | On-demand software integration with MES/ERP, dashboards, reporting and web services. |
Course Outcome
What participants should be able to do after training
Design MQTT Namespace
Create maintainable topic structures, JSON payloads and naming rules for plant or multi-machine data.
Publish & Subscribe
Configure broker/client communication and build Python publishers and subscribers with reconnect and error handling.
Integrate OT to IIoT
Bridge selected PLC/SCADA data through an edge or software gateway and deliver it to SQL, dashboards or cloud subscribers.
FAQ
Frequently asked questions
Can a PLC publish MQTT directly?
Some PLCs or edge products support MQTT natively or through libraries, while others need a gateway or software layer. The architecture should follow the capability and cybersecurity requirements of the installed platform.
What is the difference between MQTT and OPC UA?
MQTT is a lightweight broker-based messaging protocol suited to telemetry and IIoT distribution. OPC UA provides richer industrial information modelling and direct industrial interoperability. Many projects use both.
Which MQTT QoS should I use?
It depends on the data and failure model. QoS 0 is fastest but has no delivery guarantee, QoS 1 targets at-least-once delivery, and QoS 2 targets exactly-once protocol delivery with more overhead.
Is MQTT suitable for real-time safety or motion control?
No. MQTT is primarily for telemetry and application data exchange. Safety, motion and time-critical control should remain on purpose-built industrial control networks and safety systems.
Related Industry 4.0 Courses
Continue the IT / OT learning path
Build a complete workflow across PLC programming, OPC UA, SCADA scripting, SQL, Python, REST API and MQTT / IIoT communication.
Enquiry
Request syllabus, fees and corporate training plan
Send your requirement for classroom, online, corporate or in-plant training. Practical examples can be aligned with Siemens, Rockwell, Mitsubishi, Schneider, ABB, Delta and multi-vendor IT/OT systems.