Why do some registers seem to return unexpected values?

Several register addresses on the ONOKOM GR-1-MB-B are shared between different functions. For example, address 4 is used for both outdoor air temperature and quiet mode status. The template uses distinct function codes for read and write operations to differentiate. Ensure you are using the correct function code when querying manually.

What baud rate and serial settings should I use?

The ONOKOM GR-1-MB-B communicates at 9600 baud with 8 data bits, no parity, and 1 stop bit (8N1). Make sure the ModbusCloud gateway serial port matches these settings exactly.

The AC connection status shows disconnected. What should I check?

Verify the physical wiring between the ONOKOM gateway and the Gree indoor unit. Check that the gateway has power and that the correct connector on the indoor unit PCB is used. Consult the ONOKOM installation manual for pin assignments.

Can I use this template with non-Gree air conditioners?

No. The ONOKOM GR-1-MB-B gateway is designed specifically for Gree air conditioning systems. Other brands require a different gateway or template.

Free Modbus template: ONOKOM AIR GR-1-MB-B

Name: ONOKOM AIR GR-1-MB-B
Brand: Onokom
SKU: 23057327-59e8-46e7-b028-5c8acc7f49c4

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Free Modbus template: ONOKOM AIR GR-1-MB-B | ModbusCloud

Registers (18)

12 read / 15 write

Name	Address	Function	Type	Unit	Access
Indoor air temperature	3	FC03	uint16	°C	R
Outdoor air temperature	4	FC03	int16	°C	R
AC connected	20	FC01	uint16		R
Screen light (Status)	2	FC01	uint16		R/W
Ionization (Status)	9	FC01	uint16		R/W
Sleep mode (Status)	8	FC01	uint16		R/W
Quiet mode (Status)	4	FC01	uint16		R/W
Turbo mode (Status)	7	FC01	uint16		R/W
Vertical vanes (Status)	10	FC03	uint16		R/W
Eco mode (Status)	6	FC01	uint16		R/W
Disable screen when power off	41	FC01	uint16		R/W
Horizontal vanes	9	FC03	uint16		R/W
Active (Control)	1	FC05	uint16		W
Loxone modes (Control)	15	FC06	uint16		W
Smart fan speed	8	FC06	uint16		W
Target temperature	5	FC06	int16	°C	W
Vanes swing	11	FC06	uint16		W
Modbus address (Service)	128	FC06	uint16		W

ONOKOM AIR GR-1-MB-B

Overview

Key readings

Available commands

Use cases

Installation

Things to watch for

Registers (18)

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