User's Manual

Table Of Contents
SmartLogger3000
User Manual
4 Cable Connections
Issue 04 (2020-03-11)
Copyright © Huawei Technologies Co., Ltd.
54
You are advised to connect fewer than 30 devices to each RS485 route.
The baud rate, communications protocol, and parity mode of all devices on an RS485
cascading link must be the same as those of the COM port of the SmartModule.
Figure 4-18 Cascading connection
----End
4.2.6 Connecting the DI Signal Cable
Context
The SmartModule can receive DI signals such as remote commands and alarms over DI ports.
It can only receive passive dry contact signals. It is recommended that the signal transmission
distance be less than or equal to 10 m.
Procedure
Step 1 Connect the DI signal cable.