Connect To Interface Of The Modbus - Gree U-Match 5 Series Manual

GREE

2.3.12 Connect to Interface of the MODBUS

The indoor unit of this series has MODBUS interface. If the user needs to connect the unit to the
management system of the building, please enquire Gree for the MODBUS protocol.
(1) Interface instruction:
1) The Unit needs to be connected to the gateway ME50-00/EG(M), its printing is COM_BMS and
interface type is B6B-XH-K3.
2) Electrical characteristic: baud rate: 9600bps; standard: RS485;
3) Working principle:
The indoor mainboard can send out the unit operation state through this interface and receive logical
control information to realize control and monitor of the unit.
(2) Function instructions:
In order to achieve this function, set the address mode and address through wired controller. Please refer to
Point 3 for the setting method. You must set the address mode into long-distance control address mode.
The address mode is defaulted to be connecting to centralized controller mode and the defaulted address is
1.
(3) Setting method:
Firstly, set the address mode of wired controller into centralized controller address mode. The setting method
is:
Under off state of the unit, press Function and Timer buttons at the same time for 5s to go to the debugging
menu. Press Mode button to adjust to "10" in temperature displaying zone. Timer zone displays setting state and
U-Match 5 SERIES UNIT SERVICE MANUAL
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