![]() 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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