
UPDATED: 04.06.2023

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SOLAX Hybrid X1 and X3	G4


RS485 is on RJ45 connector marked COM.

PIN 4: RS485A
PIN 5: RS485B

Inverter settings: 19200,8,N,1 Modbus address: 1


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SOLAX Hybrid G3


This inverter does not have RS485 port, just ethernet port with MODBUS TCP.
To use this inverter, please use ethernet to RS485 converter (see separate manual).

Converter settings: 19200,8,N,1 Modbus address: 1

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SOLAX X3-PRO G2 + CHINT DTSU666

RS485 is on terminal block.


PIN 5: RS485A
PIN 6: RS485B

RS485 is connecting parallel to meter CHINT DTSU666.

Meter settings: baud 9600 prot n.1 (8,N,1) Modbus address: 1

Note: after DC power is lost, inverter is shut down and there is no comunication on the RS485 line 

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SOLAX X3-MIC G2 + CHINT DTSU666

RS485 is on RJ45 connector.


PIN 4: RS485A
PIN 5: RS485B

RS485 is connecting parallel to meter CHINT DTSU666.

Meter settings: baud 9600 prot n.1 (8,N,1) Modbus address: 1

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GOODWE GW10K-ET


RS485 is on 18 pin connector.

PIN 1: RS485A
PIN 2: RS485B

Inverter settings: 9600,8,N,1 Modbus address: 247

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SUNWAYS STH-10KTL-HT / WATTSONIC WTS


RS485 is on terminal block.


Inverter settings: 9600,8,N,1 Modbus address: 247

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CHINT DTSU666 or DTSU666-CT (with, or without X mark) 

RS485 is on terminal block.


PIN 24: RS485A
PIN 25: RS485B

Meter settings: baud 9600 prot n.1 (8,N,1) Modbus address: 1

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Eastron SDM630-Modbus-V2 (with X mark) 

RS485 is on terminal block.


PIN A+: RS485A
PIN B-: RS485B

Meter settings: baud 9600 prot n.1 (8,N,1) Modbus address: 1

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UPDATED: 04.06.2023
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CHINT DDSU666 (with, or without X mark) 

RS485 is on terminal block.


PIN 24: RS485A
PIN 25: RS485B

Meter settings: Modbus, 8n1, baud-3 (9600) Modbus address: 1


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SOLAX X1-BOOST () + CHINT DDSU666

RS485 is on RJ45 connector.


PIN 4: RS485A
PIN 5: RS485B

RS485 is connecting parallel to meter CHINT DDSU666.

Meter settings: Meter settings: Modbus, 8n1, baud-3 (9600) Modbus address: 1


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GROWATT SPH 10000TL3 BH-UP


RS485 is on RJ45 connector marked 485-3

PIN 5: RS485A
PIN 1: RS485B

Inverter settings: 9600,8,N,1 Modbus address: 1, set to "ShineMaster" 