This page describes the communication with an Autarco LQ-series hybrid inverter over Modbus-RTU (rs485). By default, the inverter is set to address 1. The RS485 interface is a 4-pin connector on the bottom of the inverter behind a protective plate. The exact position is marked in the orange box in the image below:
Looking closer the port looks like this:
An appropriate connector should be used for this 4-pin connector on the Autarco inverter to connect to the Sofar EMS. On the Sofar EMS, the inverter can be connected to the RS485 port. The wiring is as follows:
| Device | Sofar EMS model OM1 | Sofar EMS model IG8 | RS485-USB converter | RS485-Ethernet converter |
|---|---|---|---|---|
| Pin 3 | RS485 A | RS485_POS | RS485 A | TX+ |
| Pin 4 | RS485 B | RS485_NEG | RS485 B | TX- |
| N/A | RS GND | GND | Not available | G |