Case study of the telecontrol of a water network with many remote sites. ESP32 PLC 21 FLEX controllers with a LoRa board run the pumping stations in the field and send their data over LoRaWAN. A Raspberry PLC 42 at the plant gathers the data, reads the 4-20 mA transmitters through shunts and publishes everything by MQTT for a control room with HMI panels. The figures and set points on the page are illustrative.

The PDF covers the challenge, the three stages (the station, the radio, the plant), the system architecture with the signal list and the hardware used. Interactive version: water network telecontrol case study online.