TOSOT DC INVERTER U-MATCH AIR
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notes:
(1) There is the needle stand interface on the mainboard. The interface model inserted into this needle
stand must be PH-3P-K.
(2) The current consumption of module can not exceed the current capacity provided by this interface.
7.2.3 MODBUS Interface
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.
Figure 2-7-9
1. Interface instruction:
(1) The printing is COM-BMS1 and the interface type is B4B-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.
