Design example
Pump Station Modbus Data to MQTT
Plan how a pump station’s Modbus meter and run/fault signals can reach an MQTT receiving system.
Design example: use the site requirements and equipment path below to plan your own configuration.
Hardware in this guide
4G/LTE Industrial RTU Gateway
RS485 to Ethernet Gateway / Serial Server
Industrial Pressure Transmitter
Product-family photos. See each product page for specifications and options.
Planning a similar site?
Send the site count, signals, network, power and reporting target. We will return a comparable hardware configuration for quotation.
Site conditions to check
Compare power, communication and equipment requirements for irrigation, pumps, soil and weather monitoring.
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Agricultural irrigation and farm pumps
Compare pump contacts, motor current and water flow before choosing what to monitor at your farm.
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Farm water, soil and weather monitoring
Plan field and orchard measurements around available power, coverage and maintenance visits.
Project team
A system integrator preparing a pump station telemetry pilot.
Challenge
The receiving system expects MQTT, while the installed meters provide Modbus data and the pump panel has run/fault signals.
Equipment in the system
Example equipment arrangement. Check compatibility and agree who handles software, PLC/SCADA programming and site installation.
Data destination
Customer platform or an agreed third-party service
Site context
- Pump control cabinet with mixed signal types
- Energy or flow meter already available
- Cloud endpoint expected MQTT data
Approach
- Build a point list before selecting hardware
- Poll Modbus RTU locally through a gateway
- Map runtime, fault and meter values into MQTT fields
Hardware plan
- Remote IO or RTU module
- RS485 acquisition gateway
- 4G LTE backhaul
- DIN rail power and enclosure accessories
Hardware reference
Product-family photos; the model and enclosure may vary.
Integration path
- Modbus RTU polling
- MQTT publish to customer broker
- Alarm fields for run, fault and offline states
Checks before rollout
- Confirm the signal list and register map before selecting the gateway
- Distinguish pump faults from a lost connection in the receiving system
- Test the MQTT field mapping and units during the pilot
Quote inputs
- Pump count and signal list
- Register map
- MQTT broker details
- Alarm priority list
Related pages
FAQ
How can I use this design example?
Compare the measurement points, equipment connections and site checks with your project. Send the existing devices, available power and receiving system so we can check a suitable configuration.
How can Modbus pump and meter readings reach an MQTT broker?
A compatible gateway polls the documented Modbus RTU registers and maps the readings into MQTT topics and payload fields. Confirm units, scaling, timestamps, broker authentication and run/fault signals before choosing the gateway.
What information is needed for a pump-station pilot?
Send the pump count, signal list, register maps, MQTT broker requirements and alarm priorities. Test the mapped values and distinguish a stopped pump, a fault and a lost connection in the receiving application.