Connection Method Of Umatch Unit(Modbus Network) - Gree CE52–24/F(C) Owner's Manual

Centralized Controller
6) If the address conflict occurs, it will popup the address conflict page.
Note:There are three ways to solve address conflict.
Enter into an unoccupied address by manually for the conflict address, the
①
address conflict can be solved after it set up success.
Press and hold the "Save" button for 5 seconds on the address conflict page,
②
select reset all the IDU's address in the system, after entering the
engineering password, system will reassign all the address.
On the master unit of master system, press "SW3" to enter the to-be-selected
③
status of function settings, press "SW1 (UP) " or "SW2 (DOWN) " to select
the function of "n5 ", press "SW7" to enter "n5 " function settings, press
"SW7" again to send the project number offset command.
3.2.4

Connection Method of Umatch Unit(Modbus network)

The centralized controller Connect with Umatch Unit（Modbus network）according
to the below.
Figure 3-7 Centralized Controller Connected with Umatch Unit
Wiring Instructions:
(1)The centralized controller is applicable to Umatch units, One centralized controller
can control up to 36 Umatch units.
(2)If the centralized controller is to be connected with Umatch units, connect
according to fig.3–7. The controller must connect with terminal unit of Umatch unit .
connect the controller's A3 and B3 ports with the A and B ports correspondingly
with communication cords.a matching resistance needs to be added with the
communication cords at the A3 and B3 ports
(3)The indoor unit address must be set within the range from 1 to 36, and different
from each other. Identicle addresses will lead to communication failure. Below is
the address setting method:
1) Under OFF status, press "Function" and "Mode" on the wired controller
simultaneously for 5S to enter the address setting. Then the display panel will
show its own address number on the temperature display zone. Adjust the
number by pressing the "Up" and "Down" buttons.
8