Huawei SmartLogger1000 User Manual page 51

SmartLogger1000
User Manual
Figure 4-17 COM port on the SUN2000L
Table 4-7
Table 4-7 COM port pin definitions
No.
1
2
3
4
5
6
7
8
Figure 4-18
SPD.
Issue 12 (2019-01-15)
describes the COM ports.
shows how the SmartLogger connects to the SUN2000L through an RS485 signal
Copyright © Huawei Technologies Co., Ltd.
Label
485B1
485A1
485B2
485A2
N/A
N/A
N/A
PE
4 Electrical Connections
Definition
RS485B, RS485 differential
signal–
RS485A, RS485 differential
signal+
RS485B, RS485 differential
signal–
RS485A, RS485 differential
signal+
N/A
N/A
N/A
Port for grounding the shield
layer
38