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Hello. And thanks for the software. |
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Here is a website which deals with ESP32 with MODBUS RTU RS485 Protocol. When buying a RS485 converter you must take care that the TTL levels of the in/out connectors are explicitly declared as 3,3V - the ESP32 (like the ESP8266) does NOT work with 5V at its GPIOs (will get damaged...) But what exactly do you intend to do - read some power values via modbus and then adjust the power limit of a hoymiles inverter? Control the power limit of the inverter is not implemented in OpenDTU yet. @tbnobody did not write down a roadmap for OpenDTU, but I assume this will be implemented in a not-too-far-away future. |
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Thanks for your reply. I'll take a look and wait for the update to inclued the regulation of the power lmit of the inverter. |
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Here is a website which deals with ESP32 with MODBUS RTU RS485 Protocol. When buying a RS485 converter you must take care that the TTL levels of the in/out connectors are explicitly declared as 3,3V - the ESP32 (like the ESP8266) does NOT work with 5V at its GPIOs (will get damaged...)
But what exactly do you intend to do - read some power values via modbus and then adjust the power limit of a hoymiles inverter?
Control the power limit of the inverter is not implemented in OpenDTU yet. @tbnobody did not write down a roadmap for OpenDTU, but I assume this will be implemented in a not-too-far-away future.