Ginlong Solis Inverter (grid)
The Ginlong Solis Inverter (grid) is a grid-tied solar inverter with an integrated grid meter interface, used in residential and small commercial PV installations. This Modbus RTU template reads two key registers from the Solis grid meter: total active power at the grid connection point and cumulative grid import energy. Together, these values give your ModbusCloud portal a live view of grid exchange, enabling real-time consumption tracking and historical energy import reporting. Connecting the ModbusCloud Gateway to the inverter RS485 port delivers this data without relying on the Ginlong cloud.
- Protocol
- Modbus RTU
- Connection
- RS485
- Registers
- 2, read only
- Brand
- Ginlong
- Last updated
Registers (2)
2 read, 0 write
| Name | Unit | Access | Address (Hidden until you enter your email) | Function (hidden) | Type (hidden) |
|---|---|---|---|---|---|
| power | W | Read | |||
| energy | Wh | Read |
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Use cases
- Monitor live grid import and export power to detect unexpected consumption peaks during off-peak hours.
- Track cumulative grid import energy over weeks and months to validate utility bill accuracy.
- Alert on sustained positive grid power during daylight hours to spot PV underperformance early.
- Compare daily grid import totals across multiple Solis sites to benchmark energy self-sufficiency.
- Report monthly grid import energy to building owners for tenant energy cost allocation.
Installation
Enable Modbus RTU on the Ginlong Solis inverter by accessing the inverter display menu under the communication or Modbus settings section, and confirm the unit ID and baud rate (9600 bps, 8N1).
Wire the RS485 A and B terminals of the inverter COM port to the corresponding RS485 terminals on the ModbusCloud Gateway, using shielded twisted-pair cable and grounding the shield at one end only.
In the ModbusCloud portal, add a new Gateway, then import the Ginlong Solis Inverter (grid) template and assign the correct Modbus unit ID matching the value set on the inverter.
Verify the connection by checking the live value for the power register in the portal dashboard; it should reflect the current grid exchange within one polling cycle.
Things to watch for
All register reads time out even though wiring looks correct.
The Solis inverter RS485 port requires a minimum inter-frame gap of more than 300 ms between requests. If your polling interval is too short or the Gateway sends back-to-back frames, the inverter will not respond. Increase the polling interval and confirm the ModbusCloud Gateway is respecting the required gap.
The power register returns a value that seems far too large.
The Solis grid meter active power register uses a scaling factor of 0.001 kW per raw unit, so the raw int32 value must be divided by 1000 to get kilowatts, or multiplied by 1 to get watts at the raw scale. Confirm that your template scaling is set correctly; a misconfigured scale produces values off by a factor of 1000.
No data appears after connecting, even though the Gateway is online.
The Solis inverter Modbus port and the manufacturer data logger (S-series stick) cannot reliably operate simultaneously on the same RS485 bus. If the Ginlong data logger is connected, disconnect it or use an RS485 splitter designed for this purpose before polling with the ModbusCloud Gateway.
Energy register reads zero permanently after the inverter restarts.
The cumulative energy counter in some Solis firmware revisions resets on power cycle. This is normal device behavior; the ModbusCloud portal will accumulate daily deltas correctly as long as the previous reading is stored before the inverter powers down each evening.
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