ONOKOM AIR HS-6-MB-B
Controls Hisense air conditioners via the ONOKOM HS-6-MB-B Modbus gateway.
This template connects Hisense air conditioners via the ONOKOM HS-6-MB-B Modbus RTU gateway to the ModbusCloud platform. It provides indoor temperature readings, operating status monitoring, and full climate control including mode, fan speed, and vane position.
- Protocol
- Modbus RTU
- Connection
- RS485, 9600 baud
- Registers
- 11, read and write
- Brand
- Onokom
- Key readings
- Indoor air temperature · AC connected status · Sleep mode status · Current fan speed · Indoor heat exchanger temperature
- Available commands
- Target temperature · Active on/off · Operating mode · Horizontal vanes
- Compatible models
- ONOKOM HS-6-MB-B
- Last updated
Registers (11)
5 read, 7 write
| Name | Unit | Access | Address (Hidden until you enter your email) | Function (hidden) | Type (hidden) |
|---|---|---|---|---|---|
| Indoor air temperature | °C | Read | |||
| AC connected | Read | ||||
| Sleep mode (Status) | Read and write | ||||
| Current fan speed | Read | ||||
| Indoor heat exchanger temperature (Status) | Read | ||||
| Active (Control) | Write | ||||
| Loxone modes (Control) | Write | ||||
| Smart fan speed | Write | ||||
| Target temperature | °C | Write | |||
| Horizontal vanes | Write | ||||
| Modbus address (Service) | Write |
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Use cases
- Monitor indoor air temperature and AC operating status remotely from the ModbusCloud dashboard.
- Adjust target temperature and operating mode for Hisense air conditioners without an on-site visit.
- Create an alert when the indoor heat exchanger temperature exceeds a defined threshold.
- Log fan speed and sleep mode status over time to analyze energy usage patterns.
- Control horizontal vane positions across multiple zones from a single cloud interface.
- Verify AC connection status after installation to confirm the ONOKOM gateway communicates correctly.
Installation
Wire the ONOKOM HS-6-MB-B gateway to the Hisense air conditioner according to the ONOKOM installation manual, then connect the RS-485 A and B terminals to your ModbusCloud Gateway.
Set the Modbus slave address on the ONOKOM gateway, noting that the address can be changed by writing to register 128 if needed.
Configure the RS-485 port on the ModbusCloud gateway to use Modbus RTU at 9600 baud to match the ONOKOM default settings.
Import the ONOKOM HS-6-MB-B template from the ModbusCloud template library and assign it to the correct Modbus address.
Power on the air conditioner and verify that indoor temperature and AC connected status appear on the ModbusCloud dashboard.
Things to watch for
The gateway does not respond on the RS-485 bus. What should I check?
Verify that the A and B wires are not swapped between the ONOKOM gateway and the ModbusCloud gateway. Confirm the baud rate is set to 9600 on both sides and that the correct Modbus slave address is configured.
Can I connect multiple ONOKOM HS-6-MB-B gateways on the same RS-485 bus?
Yes. Each gateway must have a unique Modbus address. You can change the address by writing to register 128 on each unit. Make sure to assign distinct addresses before connecting them to the same bus.
The sleep mode and fan speed values seem to conflict. Why?
Register address 8 is shared for sleep mode and smart fan speed, serving as both a read and write register. Be careful when writing to this register, as it controls both functions. Check the ONOKOM documentation for the exact value mapping.
What happens if the air conditioner is powered off at the breaker?
The AC connected status register will indicate that the unit is not reachable. Temperature readings may show stale or zero values. The ModbusCloud dashboard will reflect the loss of communication.
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