FreeModbus is an open source Modbus protocol stack, but supports only slave role. I found some master mode ports on the internet, mainly armink's port done for the STM32, and erfengwe's port to the ...
Contains examples of Modbus (RS485) communication with Arduino. The Arduino RS485 Module is used for RS485 communication. In the examples, Arduino Mega is used as the Master, and Arduino Uno is used ...