GerätePV hybrid and battery inverters

ABB, Fimer inverters

Supported Devices

The Sofar EMS supports two protocols that widely used by Fimer ABB inverters. By looking at the the inverter's data sheet, you can determine which protocol is supported by your inverter. Any Fimer ABB inverter supports the "Modbus Sunspec" protocol.

All Fimer ABB inverters produced after 2022 support the SunSpec protocol. For models produced before 2022, check the data sheet to see if it supports the "SunSpec" protocol. Most models (also the older ones) support the "SunSpec" protocol.

If Sunspec is supported, we recommend using the Sunspec protocol. If Sunspec is not supported, you can use the "Aurora Power One" protocol.

Device Type	Variants	Manual	Modbus TCP (Ethernet)	RS485	Curtailment
PVS Series (via Modbus Sunspec)	PVS-30, PVS-50, PVS-60	Manual

a-TroniX

ABB, FIMER

For correct RS485 wiring: Follow the guidelines for RS485 wiring.
If the wiring shown in the table below is incorrect, please let us know.
There is no general consensus in the industry about the usage of A and B for the RS485 polarity, so it may be counterintuitive and opposite of what you might expect for some devices.

Device	Sofar EMS model OM1	Sofar EMS model IG8	RS485-USB converter	RS485-Ethernet converter
+T/R	RS485 A	RS485_POS	RS485 A	TX+
-T/R	RS485 B	RS485_NEG	RS485 B	TX-
RTN	RS GND	GND	Not available	G

ABB, FIMER | Sofar EMS Documentation

ABB, Fimer inverters

Supported Devices

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Configuration

Modbus TCP (Ethernet)

RS485

RS485 Wiring