Deye SUN-SG04LP3

Name: Deye SUN-SG04LP3
Brand: Deye
SKU: ba94015c-fb3a-4b9c-9358-017f1c9a41cb

Three-phase hybrid inverter for 48 V batteries with PV, battery, grid and load values and time-of-use control.

The Deye SUN-SG04LP3 is a three-phase hybrid inverter from 5 to 12 kW that combines two PV inputs, a 48 V battery and the grid for homes and small businesses. This Modbus RTU template reads PV, battery, grid and load values, energy counters and faults, and lets you set the work mode, time-of-use programs and battery limits from ModbusCloud.

Protocol: Modbus RTU
Connection: RS485, 9600 baud
Registers: 244, read and write

Brand: Deye
Key readings: PV power · Battery SOC · Battery power · Grid power · Load power · Daily production · Imported and exported energy · Device state
Available commands: Work mode · Time-of-use programs · Battery charge current · Grid export limit
Compatible models: SUN-5K-SG04LP3-EU · SUN-6K-SG04LP3-EU · SUN-8K-SG04LP3-EU · SUN-10K-SG04LP3-EU · SUN-12K-SG04LP3-EU · Deye SUN-5K-SG04LP3-EU · Deye SUN-6K-SG04LP3-EU · Deye SUN-8K-SG04LP3-EU · Deye SUN-10K-SG04LP3-EU · Deye SUN-12K-SG04LP3-EU
Last updated: 7 October 2026

Registers (244)

244 read, 98 write

Name	Unit	Access
Device		Read
Device Modbus Address		Read
Device Protocol Version		Read
Device Serial Number		Read
Device MCU Board Version		Read
Device AFCI Version		Read
Device MCU Version		Read
Device Control Board Firmware Version Part 1		Read
Device Control Board Firmware Version Part 2		Read
Device Control Board Firmware Version Part 3		Read
Device Communication Board Firmware Version Part 1		Read
Device Communication Board Firmware Version Part 2		Read
Device Communication Board Firmware Version Part 3		Read
Device Rated Power	W	Read
Device MPPTs		Read
Device Self-check		Read
Self-check time	s	Read and write
Date & Time Word 1		Read and write
Date & Time Word 2		Read and write
Date & Time Word 3		Read and write
On/Off Switch		Read and write
Battery Control Mode		Read and write
Battery Equalization	V	Read and write
Battery Absorption	V	Read and write
Battery Float	V	Read and write
Battery Capacity		Read and write
Battery Empty	V	Read and write
Zero Export power	W	Read and write
Battery Equalization Cycle		Read and write
Battery Equalization Time	h	Read and write
Battery Temperature Compensation		Read and write
Battery Max Charging Current	A	Read and write
Battery Max Discharging Current	A	Read and write
Battery Operation Mode		Read and write
Battery Wake Up		Read and write
Battery Resistance		Read and write
Battery Charging efficiency	%	Read and write
Battery Shutdown SOC	%	Read and write
Battery Restart SOC	%	Read and write
Battery Low SOC	%	Read and write
Battery Shutdown Voltage	V	Read and write
Battery Restart Voltage	V	Read and write
Battery Low Voltage	V	Read and write
Generator Operating Time	h	Read and write
Generator Cooling Time	h	Read and write
Battery Generator Charging Start Voltage	V	Read and write
Battery Generator Charging Start	%	Read and write
Battery Generator Charging Current	A	Read and write
Battery Grid Charging Start Voltage	V	Read and write
Battery Grid Charging Start	%	Read and write
Battery Grid Charging Current	A	Read and write
Battery Grid Charging		Read and write
Generator		Read and write
IO Mode		Read and write
SmartLoad Off Voltage	V	Read and write
SmartLoad Off	%	Read and write
SmartLoad On Voltage	V	Read and write
SmartLoad On	%	Read and write
Grid Voltage		Read and write
Generator Min PV Power	W	Read and write
Charging Signal		Read and write
Energy Pattern		Read and write
Work Mode		Read and write
Export Surplus Power	W	Read and write
Export Surplus		Read and write
Export Asymmetry		Read and write
PV Power	W	Read and write
MPPT multi-point scanning		Read and write
Time of Use		Read and write
Program 1 Time		Read and write
Program 2 Time		Read and write
Program 3 Time		Read and write
Program 4 Time		Read and write
Program 5 Time		Read and write
Program 6 Time		Read and write
Program 1 Power	W	Read and write
Program 2 Power	W	Read and write
Program 3 Power	W	Read and write
Program 4 Power	W	Read and write
Program 5 Power	W	Read and write
Program 6 Power	W	Read and write
Program 1 Voltage	V	Read and write
Program 2 Voltage	V	Read and write
Program 3 Voltage	V	Read and write
Program 4 Voltage	V	Read and write
Program 5 Voltage	V	Read and write
Program 6 Voltage	V	Read and write
Program 1 SOC	%	Read and write
Program 2 SOC	%	Read and write
Program 3 SOC	%	Read and write
Program 4 SOC	%	Read and write
Program 5 SOC	%	Read and write
Program 6 SOC	%	Read and write
Program 1 Charging		Read and write
Program 2 Charging		Read and write
Program 3 Charging		Read and write
Program 4 Charging		Read and write
Program 5 Charging		Read and write
Program 6 Charging		Read and write
Microinverter Export cut-off		Read and write
Off Grid		Read and write
Grid reconnection time	s	Read and write
Grid Frequency Setting		Read and write
Grid voltage protection - high	V	Read and write
Grid voltage protection - low	V	Read and write
Grid frequency protection - high	Hz	Read and write
Grid frequency protection - low	Hz	Read and write
Generator Grid side		Read and write
Generator Peak shaving	W	Read and write
Grid Peak shaving	W	Read and write
Grid Max Export power	W	Read and write
Grid Max Import power	W	Read and write
AC Coupling		Read and write
Battery BMS Charging Voltage	V	Read
Battery BMS Discharging Voltage	V	Read
Battery BMS Charging Current	A	Read
Battery BMS Discharging Current	A	Read
Battery BMS SOC	%	Read
Battery BMS Voltage	V	Read
Battery BMS Current	A	Read
Battery BMS Max Charging Current	A	Read
Battery BMS Max Discharging Current	A	Read
Battery Alarm		Read
Battery Fault		Read
Battery BMS Other Symbol		Read
Battery BMS Type		Read and write
Today Battery Charge	kWh	Read
Today Battery Discharge	kWh	Read
Total Battery Charge	kWh	Read
Total Battery Discharge	kWh	Read
Today Energy Import	kWh	Read
Today Energy Export	kWh	Read
Total Energy Import	kWh	Read
Total Energy Export	kWh	Read
Today Load Consumption	kWh	Read
Total Load Consumption	kWh	Read
Generator Energy - today	kWh	Read
Generator Energy	kWh	Read
Today Production	kWh	Read
Total Production	kWh	Read
DC Temperature	°C	Read
Temperature	°C	Read
Device State		Read
Power On/Off State		Read
Device Relay		Read
Device Alarm		Read
Device Fault Word 1		Read
Device Fault Word 2		Read
Device Fault Word 3		Read
Device Fault Word 4		Read
Battery Temperature	°C	Read
Battery Voltage	V	Read
Battery SOC	%	Read
Battery Power	W	Read
Battery Corrected Capacity		Read
Grid L1 Voltage	V	Read
Grid L2 Voltage	V	Read
Grid L3 Voltage	V	Read
Internal CT1 Power	W	Read
Internal CT1 Power High Word		Read
Internal CT2 Power	W	Read
Internal CT2 Power High Word		Read
Internal CT3 Power	W	Read
Internal CT3 Power High Word		Read
Internal Power	W	Read
Internal Power High Word		Read
Grid Frequency	Hz	Read
Internal CT1 Current	A	Read
Internal CT2 Current	A	Read
Internal CT3 Current	A	Read
External CT1 Current	A	Read
External CT2 Current	A	Read
External CT3 Current	A	Read
External CT1 Power	W	Read
External CT1 Power High Word		Read
External CT2 Power	W	Read
External CT2 Power High Word		Read
External CT3 Power	W	Read
External CT3 Power High Word		Read
External Power	W	Read
External Power High Word		Read
Grid Power Factor	%	Read
Grid L1 Power	W	Read
Grid L1 Power High Word		Read
Grid L2 Power	W	Read
Grid L2 Power High Word		Read
Grid L3 Power	W	Read
Grid L3 Power High Word		Read
Grid Power	W	Read
Grid Power High Word		Read
Output L1 Voltage	V	Read
Output L2 Voltage	V	Read
Output L3 Voltage	V	Read
Output L1 Current	A	Read
Output L2 Current	A	Read
Output L3 Current	A	Read
Output L1 Power	W	Read
Output L1 Power High Word		Read
Output L2 Power	W	Read
Output L2 Power High Word		Read
Output L3 Power	W	Read
Output L3 Power High Word		Read
Output Power	W	Read
Output Power High Word		Read
Output Frequency	Hz	Read
Load UPS L1 Power	W	Read
Load UPS L1 Power High Word		Read
Load UPS L2 Power	W	Read
Load UPS L2 Power High Word		Read
Load UPS L3 Power	W	Read
Load UPS L3 Power High Word		Read
Load UPS Power	W	Read
Load UPS Power High Word		Read
Load L1 Voltage	V	Read
Load L2 Voltage	V	Read
Load L3 Voltage	V	Read
Load Consumption L1 Power	W	Read
Load Consumption L1 Power High Word		Read
Load Consumption L2 Power	W	Read
Load Consumption L2 Power High Word		Read
Load Consumption L3 Power	W	Read
Load Consumption L3 Power High Word		Read
Load Consumption Power	W	Read
Load Consumption Power High Word		Read
Load Frequency	Hz	Read
Generator L1 Voltage	V	Read
Generator L2 Voltage	V	Read
Generator L3 Voltage	V	Read
Generator L1 Power	W	Read
Generator L1 Power High Word		Read
Generator L2 Power	W	Read
Generator L2 Power High Word		Read
Generator L3 Power	W	Read
Generator L3 Power High Word		Read
Generator Power	W	Read
Generator Power High Word		Read
PV1 Power	W	Read
PV2 Power	W	Read
PV1 Voltage	V	Read
PV1 Current	A	Read
PV2 Voltage	V	Read
PV2 Current	A	Read
Battery Current	A	Read
Battery Current 2	A	Read

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Send your device list

If a device is not in the library yet, we build the template for free as soon as we have the register data.

Use cases

Show PV power, battery SOC, grid power and load per phase of a Deye installation on one dashboard.
Get an alert when the device state changes to alarm or fault, or when battery SOC drops below a threshold.
Compare daily production, import, export and battery cycles in the history.
Change the time-of-use programs remotely, for example to charge the battery from the grid at night.
Set the grid export limit or zero export power when the grid operator or a contract asks for it.

Installation

Connect the RS485 pair from the Modbus port of the inverter to the RS485 port of the ModbusCloud Gateway, A to A and B to B, with 120 ohm at the end of the bus.
Check the Modbus address of the inverter in its settings; leave it at 1 or give each inverter on the bus its own address.
In ModbusCloud, add a Modbus device with protocol RTU, the inverter address, 9600 baud and 8N1, and import this template.
Check that Device shows LV 3-Phase Hybrid Inverter and that Battery SOC matches the display.

Things to watch for

The inverter does not answer. What should I check?

Make sure the cable is on the Modbus port and not on the BMS port, check address 1 and 9600 baud, and swap A and B if nothing comes back. A Wi-Fi logger that also polls the RS485 port can cause collisions.

Why do grid and load power jump to large negative values above about 32 kW?

These powers are 16-bit values with a separate high word register. Below 32767 W the low register alone is correct; for larger systems combine it with the matching High Word register.

The temperatures show about 100 degrees too much. Why?

The inverter reports DC, AC and battery temperature with an offset of 100 degrees. Subtract 100 from the value to get the real temperature.

Can I change the work mode and time-of-use programs from ModbusCloud?

Yes, the settings, time-of-use programs and battery limits are writable. Writing is off per gateway by default; request it for the gateway in the portal. Read a setting first and change one value at a time, because the inverter applies it immediately.

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