Huawei SmartLogger1000 User Manual page 44

SmartLogger1000
User Manual
Figure 4-8 COM ports on the SmartLogger
Table 4-2
Table 4-2 COM port description
Port
COM1 port
COM2 port
COM3 port
The RS485 terminal block or RJ45 port on the SUN2000 is used for RS485 communication.
There are two types of RS485 terminal blocks (1 and 2) located in different models of
SUN2000s. All the SUN2000s have RJ45 ports. You are advised to use terminal blocks for
connection.

Issue 12 (2019-01-15)
describes the COM ports.
Identifier
NC
NC
-
+
-
+
-
+
Terminal block connection
− Terminal block 1
Figure 4-9 shows the position of the terminal block in the
SUN2000-50KTL/50KTL-C1.
block.
Copyright © Huawei Technologies Co., Ltd.
Function
Reserved
Reserved
RS485B, for RS485 negative
differential signaling
RS485A, for RS485 positive
differential signaling
RS485B, for RS485 negative
differential signaling
RS485A, for RS485 positive
differential signaling
RS485B, for RS485 negative
differential signaling
RS485A, for RS485 positive
differential signaling
Table 4-3 describes the functions of the terminal
4 Electrical Connections
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