Note: Usually, DTE device(male connector) transmits the signal and DCE device(female connector) receives it. Pin 5 is the reference pin that connects to Ground. Reference Pin– The reference pin is meant to be the reference voltage pin. Pin 1,4,6,7,8,9 fall under the category of control pins. The DTE and DCE have the interchanged order for data pins.Ĭontrol Pins– The control pins are used to establish the interface between the devices. The nine pins of the RS232 connector are divided into three categories:ĭata Pins – The flow of the data occurs through the data pins. Similar article: What is RS485 Pinout, 12 Key Advantages & FAQs Name Description/Signal 1 DCD Data Carrier Direct 2 RxD Receive Data 3 TxD Transmit Data 4 DTR Data Terminal Ready 5 GND Ground 6 DSR Data Set Ready 7 RTS Request To Send 8 CTS Clear To Send 9 RI Ring Indicator RS232 Pinout Description The description and arrangement of RS-232 male connector pins are given in the table below. The pinout of the male and female RS232 connectors is shown below. RS232 protocol uses a 9-pin DB9 connector.
#Rs 232 connector serial
Thus RS232 interface is used for serial communication that transmits binary data for the communication of DTEs and DCEs. In this case, the number ‘232’ is assigned with ‘RS’ by EIA to denote the serial communication standard. But the numbers do not carry a specific meaning. Read also: VGA Pinout, Features, Advantages & Disadvantages What does RS232 stand for?Īll EIA standards start with RS. But these are now being replaced with modern technologies like Universal Serial Bus (USB). Back then, RS232 was preferred for connecting computers and Programmable Logic Controllers (PLC) with the peripherals such as printers, mice, and modems. It is the most commonly used serial communication protocol in the industry.
RS232 is also commonly used in debugging tools such as JTAG adapters.īeing one of the EIA standards, RS232 is also known as the EIA232 protocol. The simplicity of the RS232 interface makes it widely used in a variety of applications including industrial control, barcode scanners, and GPS receivers. RS232 is an asynchronous protocol, meaning that it does not require a clock signal to synchronize data transfer. The receiving line is used to receive data from the TX line. Data is transmitted serially, meaning that each bit is sent one after the other on the TX line. The protocol uses a simple three-wire interface consisting of a transmit (TX) line, a receive (RX) line, and a ground (GND) line. RS232 is a standard for serial data communications between computers and other devices. What is the Speed and Baud rate of the RS232 protocol?.
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