Modbus TCP
Qcells Q.VOLT P5T-X (pv)
Qcells
Overview
The Qcells Q.VOLT P5T-X is a three-phase string inverter for grid-tied PV systems, used in residential and light-commercial installations. Via Modbus TCP, this template reads total AC output power, cumulative energy yield, per-phase AC voltages on phases A, B, and C, and per-phase AC currents on phases A, B, and C. All registers are read-only input registers polled with function code 4. Connecting the portal to live generation data lets you verify inverter output, catch phase imbalances, and report yield accurately without relying on proprietary cloud services.
Use cases
- Monitor total AC output power in real time to verify the inverter is producing at expected levels.
- Track cumulative energy yield over months to report accurate generation figures to building owners.
- Compare per-phase voltages across phases A, B, and C to detect grid asymmetry or wiring faults early.
- Alert on unexpected drops in phase current to identify partial shading, string failures, or DC faults.
