![]() ![]() ![]() Baud rate maximum cable length 56000 2.6 m 8.5 ft 38400 3.7 m 12 ft 19200 7.6 m 25 ft 9600 15 m 50 ft 4800 30 m 98 ft 2400 60 m 196 feet Table 2: Recommended Clearances Interface between TTL Level UART and RS-232 From above we know that microcontrollers use TTL level UART 5V for logic 1 and 0V for logic 0 while serial port of the PC- RS-232 is used. ![]() The information must be broken up in data words. Qu es la comunicacin serial Regresar al inicioLa comunicacin serial es un protocolo muy comn (no hay que confundirlo con el Bus Serial de Comunicacin. Asynchronous communication: In this type of communication both send Tx and receiver RX of different watches work which means they are not synchronized. The RS232 standard describes a communication method where information is sent bit by bit on a physical channel. There are two arguments required: a configuration argument called configuration and an integer number is called the value to be entered into the Baudrat generator register to the transfer rate of the bestimmen.DataRdyUSART This function returns a 1 if data in USART read buffer available is and a 0 indicates that No data in the read buffer is available. One should be aware that all nodes must have the same transfer mode within a MODBUS network ie MODBUS ASCII can not communicate with MODBUS RTU and vice versa.
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