The RS485 is a serial protocol for communication between digital devices. Solar inverter manufacturers often use this protocol let their inverters communicate with the outside world.
The RS485 protocol has, for (solar) inverters, a couple of advantages against RS232:
- works over a big distance (till 1200 metres (4000 feet))
- supports a maximum of 32 – 256 devices, which makes possible to communicate with a 32-256 inverters on a bus.
These are the 2 biggest advantages and make it possible to connect a big number of inverters on a bus and let them communicate over a big distance.
To let WebSolarLog gather data from the inverter, it needs a RS485<>USB converter. The converter makes it possible to read the data from the inverter.
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