![]() In serial communication, data is sent one bit at a time using one signal line, so in order for the receiving side to accurately receive the data, the sending side must know at what speed it is sending each bit.In RS-232C, synchronous communication and asynchronous communication standards have been defined.For peripheral equipment used for measurements or control, the previously mentioned full-duplex communication and asynchronous communication are typically used. Asynchronous communication and synchronous communication Half-duplex communication A method where communication is performed using one transmission line while switching between send and receive.For this reason, simultaneous communication cannot be performed. ![]() ![]() Half-duplex communication and full-duplex communication Full-duplex communication A method where send and receive both have their own transmission line so data can be simultaneously sent and received. See all RS-422A/485 communication devices.Click here for a list of crossover cables and straight cables.
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