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7 Parameters of LCD

7.1 Communication Parameters

Improper communication parameter configuration may lead to inverter

communication failure!

Follow strictly the instructions of the plant staff to configure the communication

parameters.

There are the standard RS485 communication and Network communication. User can set the

communication address and protocol through the LCD screen when the hardware connection is

complete and the inverter is energized.

Proceed as follows to set the communication parameters:

Step 1 Tap “Function” from the default menu;

Step 2 Tap “Set-parameter”;

Step 3 Tap “Com-parameter” after entering the correct password.



Set parameter from the Serial Port Parameter interface for RS485 serial communication;



Set parameter from the Network Parameter interface for Network communication

7.1.1 Serial Port Parameter Setting

Click “Serial port param” to enter the following interface.

Three parameters pertinent to RS485 serial port communication can be set according to the

parameter range shown on the display.

“Address” is prescribed by the plant staff and the address for each inverter must be unique when

there is more than one inverter. “Baud” and “protocol” are selected according to the

communication method adopted.

Enter the device address with the aid of the pop-up keypad while select the Baud rate and

communication protocol through the pull-down list.

Sungrow SG500MX User Manual

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