Modbus RTU
Sunsynk Storage (hybrid) inverter (pv)
Sunsynk
Overview
The Sunsynk Storage (hybrid) inverter is a hybrid solar inverter combining PV generation, battery storage, and grid connection in a single unit for residential and light commercial sites. This Modbus RTU template reads four independent PV string power registers (power_a through power_d) covering all MPPT inputs, plus a 32-bit cumulative energy counter. With per-string power data visible in real time alongside lifetime generation totals, you can verify array balance, track yield, and detect underperforming strings without leaving the ModbusCloud portal.
Use cases
- Monitor each Sunsynk PV string independently to detect shading or soiling on individual MPPT inputs.
- Compare power_a through power_d in real time to verify balanced array output across multiple roof orientations.
- Track the cumulative energy register over months to verify actual yield against installer projections.
- Alert on a sudden drop in any single PV string to identify a failed module or connector fault quickly.
