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    RS-232 stands for Recommended Standard 232. It is a standard for serial binary data signals connecting between a Data Terminal Equipment (DTE) and a Data Circuit-terminating Equipment (DCE). It is widely implemented in computer serial ports communication –  roadmap for the way devices speak to each other using serial ports. RS-232 is radically identical to ITU V.24 (signal description and names) and V.28 (electrical). RS232 is an Active LOW voltage driven interface and operates at +12V to -12V.

    RS232 DB25 Pinouts

    Pin 1

    Protective Ground

    Pin 2

    Transmit Data

    Pin 3

    Received Data

    Pin 4

    Request To Send

    Pin 5

    Clear To Send

    Pin 6

    Data Set Ready

    Pin 7

    Signal Ground

    Pin 8

    Data Carrier Detect

    Pin 20

    Data Terminal Ready

    Pin 22

    Ring Indicator

    RS232 DB9 Pinouts

    Pin 1

    Data Carrier Detect

    Pin 2

    Received Data

    Pin 3

    Transmit Data

    Pin 4

    Data Terminal Ready

    Pin 5

    Signal Ground

    Pin 6

    Data Set Ready

    Pin 7

    Request To Send

    Pin 8

    Clear To Send

    Pin 9

    Ring Indicator

    RS232 RJ-45Pinouts

    Pin 1

    Data Set Ready / Ring Indicator

    Pin 2

    Data Carrier Detect

    Pin 3

    Data Terminal Ready

    Pin 4

    Signal Ground

    Pin 5

    Received Data

    Pin 6

    Transmit Data

    Pin 7

    Clear To Send

    Pin 8

    Request To Send

     

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