RS232 TX, RX & GND wire colors? - Electronic Circuits Projects Diagrams Free

William At MyBlueRoom · 14th November 2006, 07:34 PM

Are there standard RS232 cable color codes for TX, RX & GND?

TekNoir · 14th November 2006, 08:48 PM

As far as I know, there are no colour standards for wiring in regards to RS232 implementations, only pin assignments.

A lot of people (including myself) wire DB9 connectors to mimic a guideline colour scheme used for RS232 on RJ45 (EIA-561).

Code:

Blue    RI
Orange  DCD
Black   DTR
Red     GND
Green   RXD
Yellow  TXD
Brown   CTS
White   RTS

More information on this scheme can be found here: http://www.marchansen.com/tn103/

Having said that, the YOST serial device wiring standard has been becoming more and more popular throughout the years. I would say that it is as close to being a "standard" as anything else I have seen. It's probably what I'll eventually move to in order to avoid complications in the future. More information can be found here: http://yost.com/computers/RJ45-serial/index.html

There is a nice write-up on RS232 in the wikipedia, including a brief mention of various standards. (http://en.wikipedia.org/wiki/RS-232)

More information on colour codes, pinouts, and standards can also be found here: http://www.zytrax.com/tech/layer_1/c...tech_rs232.htm

dingjoesphapandian · 24th August 2008, 04:10 PM

cross cable color codeing tellme

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14th November 2006, 08:48 PM	(permalink)
TekNoir	As far as I know, there are no colour standards for wiring in regards to RS232 implementations, only pin assignments. A lot of people (including myself) wire DB9 connectors to mimic a guideline colour scheme used for RS232 on RJ45 (EIA-561). Code: Blue RI Orange DCD Black DTR Red GND Green RXD Yellow TXD Brown CTS White RTS More information on this scheme can be found here: http://www.marchansen.com/tn103/ Having said that, the YOST serial device wiring standard has been becoming more and more popular throughout the years. I would say that it is as close to being a "standard" as anything else I have seen. It's probably what I'll eventually move to in order to avoid complications in the future. More information can be found here: http://yost.com/computers/RJ45-serial/index.html There is a nice write-up on RS232 in the wikipedia, including a brief mention of various standards. (http://en.wikipedia.org/wiki/RS-232) More information on colour codes, pinouts, and standards can also be found here: http://www.zytrax.com/tech/layer_1/c...tech_rs232.htm

24th August 2008, 04:10 PM	(permalink)
dingjoesphapandian	cross cable color codeing tellme