SmartLogger1000
User Manual
4 Electrical Connections
Issue 12 (2019-01-15)
Copyright © Huawei Technologies Co., Ltd.
48
Figure 4-28
Connecting the SmartLogger to the PLC
Procedure
Step 1
Choose a shielded network cable of appropriate length. Crimp an RJ45 connector at one end
and connect it to the RS485 port of the PLC.
Step 2
Connect the other end of the cable to the COM port of the SmartLogger. For details, see
Procedure
in
4.3 Connecting the RS485 Signal SPD
Connect the RS485+ port of the PLC to the
COM+
port of the SmartLogger and connect
the RS485- port of the PLC to the
COM-
port of the SmartLogger.
The PLC cannot be detected automatically. You need to add this device manually on the
LCD or WebUI. For details about this operation, see
The Huawei PLC supports auto-negotiation of baud rate 9600 bps/115200 bps. If the PLC
networking is used, you are advised to set
Baud rate
to
115200 bps
for the RS485 ports of
the SmartLogger to achieve better communication performance.
----End
Follow-up Procedure
Take the reverse steps to disconnect the SmartLogger from the PLC.