Ampowr Inverters

Supported Devices

Device Type	Variants	Modbus TCP (Ethernet)	RS485
Ampihome	Single-Phase	❌	✅
	Three-Phase	❌
	Hybrid	✅

Wiring

The Sofar EMS and the Ampihone inverters communicate via RS485 or Ethernet.

Ethernet

For correct ethernet wiring: Follow the the guidelines for ethernet wiring.

RS485

RS485 Wiring

For correct RS485 wiring: follow the RS485 wiring guidelines.
If the wiring shown in the table below is incorrect, please let us know.
There is no general industry consensus on the use of A and B for RS485 polarity, so the naming may be counterintuitive for some devices.

Device	Sofar EMS model OM1	Sofar EMS model IG8	RS485-USB converter	RS485-Ethernet converter
Pin 7 (White-Brown)	RS485 A	RS485_POS	RS485 A	TX+
Pin 8 (Brown)	RS485 B	RS485_NEG	RS485 B	TX-
N/A	RS GND	GND	Not available	G

Warning

I can't find my Ampihome inverter For Ampowr hybrid inverters, the default bus addresses are 247 for Modbus RTU and 255 for Modbus TCP. The Sofar EMS will scan for devices on all addresses from 1 to 255. Therefore, it can take a while to scan for devices.

TIP: If you know the bus address of your inverter, you can set it in the Sofar EMS to speed up the scanning process.

Configuration

Ampihome Single-Phase

The Ampihome Single-Phase needs to be set to Slave Secondary Port:

Open the ESS Link app
Select "My" in the bottom-right corner
Select "My Device"
Select on the device's "Comm No."
Select "Parameter Settings"
Set "Working Mode" to "Timed Charge Mode (C&D)"
Select "Advanced" in the top-right corner
Set "BMS1 RS485 Multiplexing" to "Slave Secondary Port"

NOTE: RS485 Device Addresses

You MUST give each device a unique address on the RS485 bus. Check the device manual for instructions.
Use lower addresses first (1, 2, ...) because the Sofar EMS will find them faster!
For each device, it is generally recommended to keep the factory-default baud rate, parity, and stop bits. The Sofar EMS will scan those first.

Last updated August 24, 2026

Device Type

Variants

Modbus TCP (Ethernet)

RS485

Ampihome

Single-Phase

❌

✅

Three-Phase

Hybrid

✅

Wiring

The Sofar EMS and the Ampihone inverters communicate via RS485 or Ethernet.

RS485 Wiring

For correct RS485 wiring: follow the RS485 wiring guidelines.
If the wiring shown in the table below is incorrect, please let us know.
There is no general industry consensus on the use of A and B for RS485 polarity, so the naming may be counterintuitive for some devices.

Device	Sofar EMS model OM1	Sofar EMS model IG8	RS485-USB converter	RS485-Ethernet converter
Pin 7 (White-Brown)	RS485 A	RS485_POS	RS485 A	TX+
Pin 8 (Brown)	RS485 B	RS485_NEG	RS485 B	TX-
N/A	RS GND	GND	Not available	G

Warning

TIP: If you know the bus address of your inverter, you can set it in the Sofar EMS to speed up the scanning process.

Configuration

The Ampihome Single-Phase needs to be set to Slave Secondary Port:

Open the ESS Link app

Select "My" in the bottom-right corner

Select "My Device"

Select on the device's "Comm No."

Select "Parameter Settings"

Set "Working Mode" to "Timed Charge Mode (C&D)"

Select "Advanced" in the top-right corner

Set "BMS1 RS485 Multiplexing" to "Slave Secondary Port"

NOTE: RS485 Device Addresses

You MUST give each device a unique address on the RS485 bus. Check the device manual for instructions.
Use lower addresses first (1, 2, ...) because the Sofar EMS will find them faster!
For each device, it is generally recommended to keep the factory-default baud rate, parity, and stop bits. The Sofar EMS will scan those first.

Last updated August 24, 2026

Ampowr Inverters

Supported Devices

Wiring

Ethernet

RS485

RS485 Wiring

Warning

Configuration

Ampihome Single-Phase

NOTE: RS485 Device Addresses

On this page

Ampowr Inverters

Supported Devices

Wiring

Ethernet

RS485

RS485 Wiring

Warning

Configuration

Ampihome Single-Phase

NOTE: RS485 Device Addresses

On this page