
Modbus TCP
Hargassner boiler control
Hargassner
Monitors and controls Hargassner touch-control biomass boilers via Modbus TCP.
Overview
This template connects Hargassner touch-control biomass boilers to ModbusCloud via Modbus TCP. It reads accumulator temperatures and boiler output, and provides write access to heating circuit setpoints, hot water tank targets, and room temperature specifications.
Key readings
- Accumulator Temperature Top/Middle/Bottom
- Boiler Output
Available commands
- Boiler temp. set value
- Room temp. spec. for HC
- HWT target temperature






