SunSpec model 307 Base Met

SunSpec model 307, Base Met, is the base meteorological information model in the SunSpec standard. It sets out how weather data is laid out in registers. The model starts with a header: an ID register that reads 307 and a length register that reads 11. It replaces the older model 301. The fixed block holds read-only int16 points: ambient temperature, relative humidity, barometric pressure, wind speed, wind direction, rainfall, snow depth, precipitation type, electric field, surface wetness and soil wetness. The RainWise PVMet-500 weather station is SunSpec compliant and supports models 302, 303 and 307, read over Modbus RS-485. In model 307 the PVMet-500 only fills in ambient temperature, relative humidity, barometric pressure, wind speed, wind direction and rainfall. Ignore the other points.

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• sentence 4: support check: partial - SunSpec compliance and models 302, 303, 307 are stated, and a Modbus RS-485 settings table is referenced, but the passages don't clearly say the models are read over RS-485 and don't mention RainWise by name.
• sentence 4: review: partial - SunSpec compliance and support for 302, 303 and 307 are stated, but 'read over Modbus RS-485' rests only on a table title for default RS-485 settings and is never stated as the transport for these models. -->