Senergy Hybrid Inverter (battery)
The Senergy Hybrid Inverter is a residential and light-commercial battery storage inverter, deployed as part of the Alfred 10 all-in-one energy storage system. This template connects over Modbus TCP and reads battery state of charge, instantaneous power, and cumulative energy throughput. It also exposes five writable battery mode registers, enabling remote control of operating behaviour directly from your ModbusCloud Gateway. Installers gain a live view of battery performance and can adjust mode parameters without physical access to the unit.
- Protocol
- Modbus TCP
- Connection
- Ethernet, Modbus TCP
- Registers
- 8, read and write
- Brand
- Senergy
- Compatible models
- Hybrid Inverter · Alfred 10
- Last updated
Registers (8)
3 read, 5 write
| Name | Unit | Access | Address (Hidden until you enter your email) | Function (hidden) | Type (hidden) |
|---|---|---|---|---|---|
| power | W | Read | |||
| energy | Wh | Read | |||
| soc | % | Read | |||
| batterymode_a | Write | ||||
| batterymode_b | Write | ||||
| batterymode_e | Write | ||||
| batterymode_f | Write | ||||
| batterymode_g | Write |
Loading registers…
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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
- Monitor battery state of charge continuously to detect gradual capacity fade across seasons.
- Track cumulative energy throughput to verify that the Alfred 10 is cycling within expected daily ranges.
- Alert on abnormal instantaneous power readings that may indicate a charge or discharge fault.
- Compare daily energy throughput against PV production data to validate self-consumption ratios.
- Verify that remote battery mode changes via write registers have taken effect by reading back power values.
Installation
Enable Modbus TCP on the Senergy Hybrid Inverter by navigating to the communication or network settings in the inverter's web interface and confirming that the Modbus TCP server is active on port 502.
Connect the inverter to the same local network as the ModbusCloud Gateway using a standard Ethernet cable, and note the inverter's assigned IP address.
In the ModbusCloud portal, add a new device, import the Senergy Hybrid Inverter (battery) template, and enter the inverter's IP address and Modbus unit ID (typically 1).
Spot-check the connection by confirming that the soc register at address 8192 returns a plausible percentage value in the portal's live data view.
Things to watch for
Why does the soc register return zero or no value?
Confirm that the Modbus TCP server is enabled in the inverter's communication settings and that port 502 is not blocked by a firewall or router. If the inverter has recently powered on, allow a full boot cycle before polling, as some firmware versions delay Modbus availability by up to 60 seconds.
The gateway connects but power reads as a large unexpected number. What is wrong?
The power register at address 8201 is a signed int32 spanning two consecutive 16-bit registers. Verify that your Modbus master reads both registers together and interprets them as a 32-bit signed integer. Byte-swapped reads will produce garbage values. Confirm the data type is set to int32 in the template, not int16.
No values appear after importing the template. What should I check first?
Check that the unit ID configured in the portal matches the Modbus slave address set on the inverter, which is typically 1 but may have been changed during commissioning. Also confirm the inverter's IP address has not changed due to a DHCP lease renewal. Assigning a static IP or a DHCP reservation is recommended.
Is it safe to write to the batterymode registers without additional precautions?
Use the batterymode write registers (addresses 8448, 8449, 8450, 8451, 8524) with care. Writing unsupported values or switching modes during active charge or discharge cycles can interrupt operation or trigger protection responses. Always verify the permitted values in the Senergy documentation before writing, and test changes during low-load periods.
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