Connecting To A Plc - Huawei SmartLogger1000 User Manual

SmartLogger1000
User Manual
Procedure
Step 1 Connect one end of the cable delivered with the power meter to the RS485 port of the Power
Meter.
Step 2 Connect the other end of the cable to the COM port of the SmartLogger. For details, see
1–Step 4
Connect the RS485+ port of the Power Meter to the COM+ port of the SmartLogger and the
RS485- port of the Power Meter to the COM- port of the SmartLogger.
----End
Follow-up Procedure
Take operations in reversed order to disconnect the SmartLogger from the Power Meter.

4.7 Connecting to a PLC

This topic describes how to connect the SmartLogger to a PLC.
Context
The RS485 port of a PLC is an RJ45 port that should be connected to an RJ45 connector, as
shown in
Issue 12 (2019-01-15)
in Procedure in 4.3 Connecting the RS485 Signal

After connecting the cable for a power meter that supports the Modbus-RTU protocol, log in to the
embedded WebUI and set relevant parameters for the Modbus power meter. For details, see
Setting Power Meter Parameters.
 Devices connected to a COM port of the SmartLogger must support the same protocol. After
connecting the cable, modify the COM port protocol on the LCD or WebUI. For details, see
Setting Communications Parameters
 The power meter cannot be detected automatically. You need to add this device manually on the
LCD or WebUI. For details about this operation, see
Connecting Devices.
Figure 4-27.
Copyright © Huawei Technologies Co., Ltd.
SPD.
or 7.10.2.2 Setting RS485
6.2.34 Managing Devices
4 Electrical Connections
Parameters.
or 7.11.8.1
Step
7.10.2.3
6.2.26
46