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.
This has led to the RS485’s wide adoption as the communication interface of choice when multiple nodes need to communicate in control or data acquisition applications. In the EIA’s standard series, the RS485 protocol is considered the most versatile, demonstrating good performance on all four criteria. It also covers the technical RS485 specifications This article describes the RS485 pin configuration including diagrams of full and half duplex RS485 connector pinouts.
