Copyright © Huawei Technologies Co., Ltd.
Specifies the address for RS485
communication.
Matches the user's network
management conditions onsite.
4800, 9600, 19200,
115200
Specifies the address for COM
communication.
Matches the user's network
management conditions onsite.
4800, 9600, 19200,
115200
If Modbus TCP is used for
communication, communication
links do not implement
encryption or implement
encryption based on the selected
encryption mode.
IP address allocation
If the MDU is directly connected to a computer, the IP address can only be allocated
manually. The IP addresses of the MDU and computer must be in the same network
segment, and must be different.
If the MDU is connected to a computer through a LAN switch or router with the DHCP
function, the IP address can be allocated manually or automatically. Manual allocation is
used by default.
− Manual: Check that their IP addresses are two different values on the same network
segment. Set the SmartLi IP address to be in the same subnet as the PC IP address.
Perform the bitwise AND operation for the UPS IP address and the PC IP address
with the subnet mask respectively. If the operation results are the same, the two IP
addresses are in the same subnet.
AND operation rule: 1 AND 1 = 1, 1 AND 0 = 0, 0 AND 1 = 0, 0 AND 0 = 0. That
is when the corresponding bits are both 1, the result is 1. In other cases, the result is
0.
Table 4-4 Bitwise AND operation example
PC IP address
(182.98.225.125)
UPS IP address
(182.98.225.112)
PC IP address/SmartLi IP
address
10110110.01100010.111000
01.01111101
10110110.01100010.111000
01.01110000
Subnet mask
(255.255.255.192)
11111111.11111111.111111
11.11000000
11111111.11111111.111111
11.11000000
Bitwise AND operation
result
10110110.01100010.111000
01.01000000
10110110.01100010.111000
01.01000000
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