Why do I see incorrect values for indoor temperature or mode status?

Some register addresses overlap between read and write maps on the ONOKOM DK-1-MB-B. Ensure the correct Modbus function codes are used. Input registers (function code 04) and holding registers (function code 03) may share the same address but serve different purposes.

What baud rate should I use for the ONOKOM DK-1-MB-B?

The default baud rate is 9600 with 8 data bits, no parity, and 1 stop bit (9600 8N1). Make sure the ModbusCloud gateway serial port matches these settings exactly.

Can I use one template for multiple Daikin units in the same building?

Yes. Each Daikin unit requires its own ONOKOM DK-1-MB-B gateway with a unique Modbus slave address. You can reuse the same template for each unit and just change the slave address in the ModbusCloud configuration.

The AC unit shows as disconnected in the dashboard. What should I check?

Verify the physical connection between the ONOKOM gateway and the Daikin indoor unit. Check that the RS-485 wiring between the ONOKOM gateway and the ModbusCloud gateway is correct, with A connected to A and B connected to B. Also confirm the slave address matches.

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

Name: ONOKOM AIR DK-1-MB-B
Brand: Onokom
SKU: d6e42001-e173-4da3-964f-d0d91dbfb0d8

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

Registers (18)

12 read / 13 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
Screen low bright (Status)	3	FC01	uint16		R/W
Eco mode (Status)	6	FC01	uint16		R/W
Vertical vanes (Status)	10	FC03	uint16		R/W
Target fan speed	31	FC03	uint16		R
Current fan speed	32	FC03	uint16		R
Turbo mode (Status)	7	FC01	uint16		R/W
Horizontal vanes (Status)	9	FC03	uint16		R/W
Quiet mode (Status)	4	FC02	uint16		R/W
Active (Control)	1	FC05	uint16		W
Loxone modes (Control)	15	FC06	uint16		W
Fan speed	7	FC06	uint16		W
Target temperature	5	FC06	int16	°C	W
Modbus address (Service)	128	FC06	uint16		W
Vanes swing	11	FC06	uint16		W

ONOKOM AIR DK-1-MB-B

Overview

Key readings

Available commands

Use cases

Installation

Things to watch for

Registers (18)

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