Reverse-engineered SunSpec Modbus map of the APsystems ECU-C: every register with its implementation status, an undocumented model hidden after the end-of-chain marker, and a silent failure mode that breaks zero export. Probe scripts and Home Assistant config included.
Read-only SunSpec Modbus explorer for solar inverters, meters and batteries. Decode models, poll, record and export via desktop GUI or remote browser.
SunSpec Modbus CLI for solar inverters, meters and batteries. Discover, read, poll and simulate devices over Modbus TCP and RTU.
Go (Golang) SunSpec Modbus library and CLI. Discover and read solar inverters, meters, batteries and DER devices over Modbus TCP/RTU, with typed, scaled values from 112 built-in SunSpec models.
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