12
Technical Information
Note:
When door control function and human sensitive function have been set at the same time, it is defaulted that door control
function is valid and human sensitive function is invalid.
The user can purchase the human sensitive module by himself. Please pay attention to the following notes:
1. There is the needle stand interface on the main board. 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.
U-Match Series DC Inverter Service Manual
42
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 main board 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:
1)
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
Centralized controller address mode (LCD displays 00)
Long-distance control address mode (LCD displays 01)
Choose the second selection and then press Enter/Cancel button to save and exit setting. Now, the
address of wired controller is set to match the address of long-distance control. The unit will memorize this
setting status. The setting value will be memorized after power failure. The detailed setting is as shown in
the Figure below:
1. Interface instruction:
a. The printing is COM-BMS1 and the interface type is B4B-XH-K3;
b. Electrical characteristic: baud rate: 9600bps; standard: RS485;
c. Working principle:
The indoor main board can send out the unit operation state through this interface and receive logical control informa-
tion 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:
a. 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 press
or
button to adjust. There are 2 selections:
i. Centralized controller address mode (LCD displays 00)
ii. Long-distance control address mode (LCD displays 01)
Choose the second selection and then press Enter/Cancel button to save and exit setting. Now, the address of
wired controller is set to match the address of long-distance control. The unit will memorize this setting status. The
setting value will be memorized after power failure. The detailed setting is as shown in the Figure below:
