Chapter Vii Communication Mode; Communication Interface; 1Rs485 Serial Port - Alpha ESS PWG2-50K User Manual

30 Chapter VII Communication Mode

7.1Communication interface

Storage inverter supports Modbus protocol, adopts RS485 and Ethernet communication interface and facilitates
users to conduct background monitoring for storage inverter and realize remote signaling, remote metering and
remote regulating of storage inverter.

7.1.1RS485 serial port

The front door of storage inverter is embedded with touch screen Management Unit. User interface can be seen at
its back. In particular, the position number of RS485 communication interface in the monitoring panel is J23. It is led
to terminal strip ports 9 and 10. Users can transfer serial port signal to the one which can be processed by PC via
interface converter (such as RS485 transferred to 232). The storage inverter is commissioned alone via background
software. It can read operation and warning information. Corresponding setting, startup and shutdown operations
can be conducted.
SD
Chapter VII Communication Mode
LAN
USB
Power
CAN L
Management
CAN H
Unit
CAN GND
485_3A
485_3B
485_3GND
To
external
RS485