Small Python scripts for reading data from SAJ H2-series inverters via Modbus TCP. I put this together because my inverter doesn’t expose its web UI and I didn’t have physical access to it for a while ...
Modbus RTU adds framing (3.5 character silent intervals) and CRC-16 to the same PDU structure as TCP The CRC-16 algorithm is well-defined and can be implemented in ~20 lines Silent interval detection ...
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