Waveshare UART TO ETH - MQTT and JSON

RS485 TO ETH ( B)
Figure 39 Timing sending parameters
In order to facilitate the identification of the device, if you need to perform
remote management, please give the device a name that is easy to remember.
1 0 . MQTT AND JSON
For related usage, please refer to：
 MQTT and JSON Manual:
https://www.waveshare.com/wiki/RS485_TO_POE_ETH_(B)_MQTT_And_JSON_User_Manual
 Connect Alibaba Cloud And EMQX
https://www.waveshare.com/wiki/RS485_TO_ETH_(B)_Connect_Alibaba_Cloud_And_EMQX