2
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Warning
Caution
Warning
Usage
W
arning
2 Overview
2.1 Instruction
Fig.2.1
WAN terminal˖ Connect to the switche by 5 kinds of network cables to ensure that
PC can access to the web page of it.
A1B1E terminal˖ Connect to the indoor/outdoor unit
A2B2E terminal˖ Connect to the terminal serial port.
2.2 System Architecture Description
It supports two kinds of outdoor unit with baud rates of 600 and 4800. (For detailed
information, please contect our technical support). The addresses of accessed
indoor/outdoor units can’t repeat.
1)When the baud rate of the outdoor unit is 600, 64 indoor units and 4 outdoor units
can connect to it at most.
2) When the baud rate of the outdoor unit is 4800, 60 indoor (with the address from
4—63) units and 4 outdoor units can connect to it at most.
The upper computer system with Modbus protocol access to terminal A2B2E by RTU
or by TCP to connect to modbus gateway. See the connection figure between
modbus gateway and air-conditioner system below:
Connection through Modbus TCP:
Note:XYE port and K1K2E port connect hand in hand,and then access to
A1B1E port.
:$1
A1
B1
E
A2
B2
E
POWER
RESET
,3
32:(5
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