Networking - Huawei PLC CCO01A User Manual

PLC CCO01A
User Manual
Benefits
The PLC networking mode uses the existing power line for communication and does not
require additional communications cable, which reduces the construction and maintenance
costs and improves communication reliability and efficiency.

2.2 Networking

A PLC module consists of the station (STA) and central controller (CCO).
the typical PLC networking.
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Issue 02 (2016-01-10)
As the slave unit of the PLC, the STA is installed inside the SUN2000 as a
communications board. The STA converts the RS485 communications data received
from the inverter monitoring board and sends the converted data to the AC power cable.
In addition, it converts the data received from the AC power cable and sends the
converted data to the inverter monitoring board.
As the master unit of the PLC, the CCO is installed in a SUN2000 communication box
or box-type transformer as a standalone device. The CCO converts RS485
communications data received from the data collector and sends the converted data to the
AC power cable. In addition, it converts the data received from the AC power cable and
sends the converted data to the data collector.
 The PLC CCO can connect to a maximum of 80 PLC STAs. Generally, a PLC CCO is configured
for each grid-tied point.
 The PLC CCO supports only the Modbus RTU protocol.
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2 Overview
Figure 2-2 shows
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