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Monday, November 15, 2010

RS232D standard for RS232 communication-RS232 on RJ-45

RS232 on RJ-45

RJ-45 (Registered Jack-45) is an eight-wire connector used commonly to connect computers onto local-area networks (LAN), especially Ethernets. In other words, RJ-45 is a single-line jack for digital transmission over ordinary phone wire, either untwisted or twisted. The interface has eight pins or positions. For faster transmissions in which you're connecting to an Ethernet 10BASET network, you need to use twisted pair wire. RS232D, EIA/TIA - 561 standard is applied when connecting to or from a serial port with a 8 position Modular Jack (RJ45) though it is not widely used as such.


Pin No.

Name

Notes/Description

1

DSR/RI

Data set Ready/ring indicator

2

DCD

Data Carrier Detect

3

DTR

Data Terminal Ready

4

SGND

Signal Ground

5

RD

Receive Data

6

TD

Transmit Data

7

CTS

Clear to Send

8

RTS

Request to Send

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