SUN2000-(55KTL, 60KTL) Series
User Manual
5 Electrical Connections
Issue 02 (2017-07-30)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
46
Figure 5-17
Communication mode for multiple SUN2000s
The RS485 communication distance between the SUN2000 at the end of the daisy chain and the
SmartLogger cannot exceed 1000 meters.
If multiple SUN2000s need to communicate with one another and are connected to a PC over the
SmartLogger2000, a maximum of six daisy chains can be configured.
To ensure the system response speed, it is recommended that the number of devices on each daisy
chain be less than 30.
PLC Communication
The PLC communication board loads communication signals onto power cables for
transmission. For details about how to install the PLC, see the
PLC CCO01A User Manual
or
SmartLogger2000 User Manual
.
The built-in PLC module in the SUN2000 does not need to be connected with cables.
Selecting a Communication Mode
The RS485 and PLC communication modes are mutually exclusive.
If the PLC communication mode is selected, do not connect the RS485 communications
cable. In addition, you need to set
PLC communication
to
Enable
.
If the RS485 communication mode is selected, do not connect the PLC CCO module to
the AC power cable. In addition, you are advised to set
PLC communication
to
Disable
.
PLC communication
is set to
Enable
by default.
You can set a single SUN2000 over the SUN2000 app or set multiple SUN2000s in batches over the
SmartLogger.
5.7.2 Connecting the RS485 Communications Cable
Description
An RS485 communications cable can be connected in two ways:
Terminal block connection
You are advised to use a DJYP2VP2-22 2x2x1 PC cable or a communications cable with
a conductor cross-sectional area of 1 mm
2
and cable outer diameter of 14–18 mm.
RJ45 network port connection