
SmartLogger2000
User Manual
4 Electrical Connection
Issue 04 (2018-04-10)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
47
Figure 4-6
COM ports of the SmartLogger
Table 4-1
COM port description
Port
Identifier
Function
COM1
+
RS485A, RS485 differential
-
RS485B, RS485 differential signal–
COM2
+
RS485A, RS485 differential
-
RS485B, RS485 differential signal–
COM3
+
RS485A, RS485 differential
-
RS485B, RS485 differential signal–
COM4
+
RS485A, RS485 differential
-
RS485B, RS485 differential signal–
COM5
+
RS485A, RS485 differential
-
RS485B, RS485 differential signal–
COM6
+
RS485A, RS485 differential
-
RS485B, RS485 differential signal–
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.
Terminal block connection
−
Terminal block 1
shows the position of the terminal block in the
SUN2000-50KTL/50KTL-C1.
describes the functions of the terminal
block.