MHI Modbus templates
All 1 available MHI templates for ModbusCloud.
Monitor MHI Hydrolution heat pumps (EZY R290, R32) via Modbus RTU with the MODBUS40M accessory.
- Templates
- 1
- Connection
- Modbus RTU
- Registers
- 1327 per template
- Compatible models
- MHI Hydrolution EZY R290 6 kW (FDCM60VNX-P) · MHI Hydrolution EZY R290 7.1 kW (FDCM71VNX-P) · MHI Hydrolution EZY R290 10 kW · MHI Hydrolution EZY R290 14 kW · MHI Hydrolution EZY R32 (FDCW60VNX-W, FDCW71VNX-W) · MHI Hydrolution R32 (HSB60-W / HMK60-W + RC-HY40-W) · NIBE SMO 40 (direct equivalent) · NIBE F1145 / F1155 / F1245 / F1255 / F1345 (same MODBUS 40 map) · NIBE F370 / F470 / F730 / F750 · NIBE VVM 310 / 320 / 325 / 500 · MHI Hydrolution EZY R32 · NIBE SMO 40 · NIBE F1145 · NIBE F1155 · NIBE F1245 · NIBE F1255 · NIBE F1345 · NIBE F370 · NIBE F470 · NIBE F730 · NIBE F750 · NIBE VVM 310 · NIBE VVM 320 · NIBE VVM 325 · NIBE VVM 500
- Last updated
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Mitsubishi Heavy Industries (MHI) sells air-to-water heat pumps for residential and light-commercial heating under the Hydrolution brand. The current EZY R290 line (6, 7.1, 10 and 14 kW with FDCM60/71VNX-P outdoor units) and the older Hydrolution R32 are both driven by the RC-HY40-W indoor controller. The RC-HY40-W is an OEM rebrand of the NIBE SMO 40 (F-series), so the full NIBE SMO 40 Modbus register map (1,332 parameters) applies byte-for-byte.
This ModbusCloud template integrates MHI Hydrolution units via Modbus RTU over the MODBUS40M accessory (NIBE part 067 144). Modbus TCP is NOT available on this controller — RTU via the accessory card only. Reads use FC03 Read Holding Registers; writes use FC16 Write Multiple Registers exclusively (FC06 does NOT work on MODBUS 40).
With the MHI template you can read BT1 outdoor temperature, supply/return, hot water, per-system room temperature, 3-phase currents, flow, compressor hours, defrost status, F2120 outdoor-unit telemetry, and the split heat meter for hot water and heating. Writes cover degree minutes, heating curve and offset, hot-water demand mode, alarm reset, SG Ready and Smart Price Adaption.
What you can read out
- Outdoor, supply, return and hot water temperatures
- 3-phase currents and heat-meter split (hot water vs heating) in kWh
- Compressor hours, starts and F2120 outdoor-unit telemetry
- Degree minutes, priority state and alarm code per outdoor unit
- SG Ready and Smart Price Adaption for grid-aware control
Typical installations
- Residential MHI Hydrolution EZY R290 propane heat pump (6/7.1/10/14 kW)
- Hydrolution R32 retrofit with RC-HY40-W controller
- Installer multi-site monitoring via the MODBUS40M accessory
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