mrcool.com 12
12
1. Interface Instructions:
1. The printing is COM-CENT and the interface type is B2B-XH-K3.
2. Electrical characteristic: baud rate-9600bps; standard-RS485
3. Working principle
The indoor mainboard can send out the unit's state of operation through this interface and receive logical
control information to control and monitor the unit.
2. Function Instructions:
In order to achieve this function, set the address mode and address through the wired controller. Refer to #3
below for the setting method. The address mode must be set into long-distance control address mode.
The address mode is defaulted to connecting to a centralized controller mode and the defaulted address is 1.
3. Setting Method:
First, set the address mode of the wired controller into centralized controller address mode. The setting method
is:
When the unit is powered o, press the Function and Timer buttons simultaneously for 5 seconds to enter
the debugging menu. Press the Mode button to adjust to "10" in the temperature display area. The timer area
displays the setting state. Press the up or down arrow buttons to adjust. There are two selections:
1. Centralized Controller Address Mode (Screen displays "00".)
2. Long-Distance Control Address Mode (Screen displays "01".)
Choose the second selection and press the Swing/Enter button to save and exit this setting. The address of the
wired controller is now set to match the address of long-distance control. The unit will memorize this setting
status. The setting value will be memorized and returned to after a power failure.
Address setting of each unit: when the address mode is set to be long-distance control address mode.
Address setting value range: 01~255.
The setting method:
When the unit is powered o, press the Function and Mode buttons simultaneously for 5 seconds to enter the
wired controller address setting interface. The screen will display the address sequence. Press the up or down
arrow button to adjust the address sequence then press the Swing/Enter button to conrm. The setting value
will be memorized after power failure.
NOTE
1. In order to realize the MODBUS interface function, the address mode of the unit must be set into long-
distance control address mode. It cannot be set into centralized control address mode, otherwise, this
function cannot be realized.
2. The unit cannot be connected to the MODBUS and centralized controller at the same time; only one of
them can be selected.
3. 255 sets of unit in maximum can be connected in the same network; the unit addresses in the same
network must be dierent. Otherwise, the unit control will be aected.
4. Perform wiring when the unit power is disconnected.
WIRED CONTROLLER
2
To Next Page
Loading...
Need help?
General
