What is the RS-232 used for?

RS-232 is an interface for the interchange of serial binary data between two devices. It is a standard protocol used for serial communication; it is used for connecting a computer and its peripheral devices to allow serial data exchange between them.

What are the three major parts that define the RS-232 standard?

The standard defines three factors: signal voltages, use of the signal lines, and signal and bit timing between a DCE and a DTE.

Is RS-232 dead?

While RS-232 is mainly gone from the computer scene, it is still alive and well in industry. In fact, according to some, the RS-232 product business is still growing.

Is RS-232 a protocol?

RS232 is a standard protocol used for serial communication, it is used for connecting computer and its peripheral devices to allow serial data exchange between them. As EIA defines, the RS232 is used for connecting Data Transmission Equipment (DTE) and Data Communication Equipment (DCE).

What is RS-232 voltage levels?

Table 1. RS-232 Specifications

Which connector is most commonly associated with an RS-232 interface?

Connectors and Signals RS-232 devices are either DTE or DCE devices. Computer terminals are usually equipped with male connectors with DTE pin functions, while modems have female connectors with DCE pin functions.

What are RS-232 voltage levels?

The standard specifies a maximum open-circuit voltage of 25 volts: signal levels of ±5 V, ±10 V, ±12 V, and ±15 V are all commonly seen depending on the voltages available to the line driver circuit. Some RS-232 driver chips have inbuilt circuitry to produce the required voltages from a 3 or 5 volt supply.

Should RS-232 be twisted?

Although RS-232 doesn’t use differential signaling, so that the cables don’t use twisted differential pairs, it is nevertheless advantageous to twist the conductors together in order to cancel EMI. The conductors in serial cable are twisted together. Conductors don’t have to be twisted in pairs.

What is DCD signal?

Data Carrier Detect, abbreviated as DCD, or alternately Carrier Detect abbreviated as CD, is a control signal present inside an RS-232 serial communications cable that goes between a computer and another device, such as a modem.

Which connector is most commonly associated with an RS 232 interface?

What kind of applications can RS232 be used for?

Applications 1 Though RS232 is a very famous serial communication protocol, it is now has been replaced with advanced protocols like USB. 2 Previously they we used for serial terminals like Mouse, Modem etc. 3 But, RS232 is still being used in some Servo Controllers, CNC Machines, PLC machines and some microcontroller boards use RS232 Protocol.

How does RS232 work at the physical level?

RS232 is a serial information transfer protocol standard that defines both the protocol (method of transmission of data) and the physical hardware to do it. This document describes how it works at the physical level so you will know what signals you can expect to see at the microcontroller pins.

What are the four signals in the RS232 protocol?

The RS232 Protocol defines four signals for the purpose of Handshaking: 1 Ready to Send (RTS) 2 Clear to Send (CTS) 3 Data Terminal Ready (DTR) and 4 Data Set Ready (DSR)

How does the RS232 bit stream protocol work?

How RS232 works : RS232 defines a protocol that details how a stream of data bits is sequentially transmitted onto a wire i.e. a bit stream. The order and meaning of each bit is defined by the protocol.