From the manufacturer manual
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Solar inverters
X1 and X3 energy storage inverters
198 registers
One Modbus register map from SolaX for its single-phase (X1) and three-phase (X3) energy storage inverters. The document lists the inverters that share the map by name and inverter ID. It covers firmware and serial data, status and fault words, PV, grid, meter, battery and energy history values, and the common operating settings. The inverter reports its own type code, and some registers apply only to X1 or only to X3. This file is a selection of the document, not every register: battery serial numbers, time of use and charge period tables, generator, VPP, parallel and other settings are left out.
All register maps · Modbus Poll