Huawei SmartLogger1000 User Manual page 31

SmartLogger1000
User Manual
Category
6
7
8
There are three COM ports for the RS485 communications of the SmartLogger, as shown in
Figure
Figure 4-2 COM ports on the SmartLogger
Table 4-2
Table 4-2 COM port description
Port
COM1 port
COM2 port
COM3 port
Figure 4-3
Issue 04 (2013-12-15)
Color
Green
White and brown
Brown
4-2.
describes the definition of the COM ports.
Identifier
NC
NC
-
+
-
+
-
+
shows how to connect the SmartLogger to the SUN2000.
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
4 Electrical Connections
Function
PGND
PGND
PGND
Function
Reserved
Reserved
RS485B, RS485 differential signal -
RS485A, RS485 differential signal +
RS485B, RS485 differential signal -
RS485A, RS485 differential signal +
RS485B, RS485 differential signal -
RS485A, RS485 differential signal +
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