![]() ![]() An example is data received from a modem transferred to a computer. ![]() Receive Data (RXD) this line is used for data transmission between two sources. RS485 pinout RS485 signal line definitionsĬarrier Detect (CD) this control signal is used when a modem informs a computer that it has detected a carrier that the computer can use for data transmission. RS485 pinout DB9 connector is shown below:įigure 2.
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