Written by Michal Hašek, Wednesday 11 November 2026

PV inverters in remote fields often speak legacy Modbus RTU, and there’s rarely a fixed network nearby. Operators still need their performance data in the control center, in real time.

The ICR-1645 industrial cellular router acts as a data acquisition gateway right at the PV field. It reads inverter data over RS485, converts Modbus RTU to Modbus TCP and then to MQTT using RouterApps directly on the router, and delivers it over LTE to the SCADA server and data archiving in the remote control center. No extra gateway, no wired WAN.

📶 Dual-SIM LTE for reliable remote connectivity
🔄 Modbus RTU → TCP → MQTT conversion on the router
☁️ Remote management via DMP

👉 Read the whole Case Study: https://icr.advantech.com/solutions/remote-solar-farm-monitoring