| Author |
Message |
Parasites Lost
Guest
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 Posted:
Sun Feb 27, 2005 7:01 pm Post subject:
RS232 Colours |
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Hi all,
I have a RS232 connector which only has 4 wires (ripped from an old
mouse)
The wires have been colour and text labeled:
RT - White
V - Blue
RX - Orange
G - Green
IIRC from a cable wiring guide,
RT = pinout 3 (transmit)
V = 7 (RTS)
RX = 2 (Receive)
and G = 5 (ground)
Have I got the pinouts right?
The colour of the wires are a bit confusing.
Thanks
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Chris
Guest
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| Posted:
Sun Feb 27, 2005 7:25 pm Post subject:
Re: RS232 Colours |
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Parasites Lost wrote:
| Quote: | Hi all,
I have a RS232 connector which only has 4 wires (ripped from an old
mouse)
The wires have been colour and text labeled:
RT - White
V - Blue
RX - Orange
G - Green
IIRC from a cable wiring guide,
RT = pinout 3 (transmit)
V = 7 (RTS)
RX = 2 (Receive)
and G = 5 (ground)
Have I got the pinouts right?
The colour of the wires are a bit confusing.
Thanks
|
Good morning. It's nice to see the Milton fans are up and around
during Lent.
Use this link and an ohmmeter to help you determine the relationship
between DB-9 or DB-25 pins and their RS-232 function:
http://www.uwsg.indiana.edu/usail/peripherals/serial/rs232/
Here's what they have to say (formatted in fixed font):
DB-9 Pin Corresponding DB-25 Pin Signal Function
2 3 RD Received data
3 2 TD Transmitted data
8 5 CTS Clear to send
7 4 RTS Request to send
6 6 DSR Data set ready
5 7 SG Signal ground
4 20 DTR Data terminal ready
1 8 DCD Data carrier detect
I wouldn't rely on wire insulation colors.
"[He] who overcomes lice
By force hath overcome but half his foe;
He must get the nits, too." ;-)
Chris |
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Rich Webb
Guest
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| Posted:
Sun Feb 27, 2005 7:57 pm Post subject:
Re: RS232 Colours |
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On Sun, 27 Feb 2005 17:01:08 +0400, Parasites Lost
<parasiteslost@bigfoot.com> wrote:
| Quote: | Hi all,
I have a RS232 connector which only has 4 wires (ripped from an old
mouse)
The wires have been colour and text labeled:
RT - White
V - Blue
RX - Orange
G - Green
IIRC from a cable wiring guide,
RT = pinout 3 (transmit)
V = 7 (RTS)
RX = 2 (Receive)
and G = 5 (ground)
Have I got the pinouts right?
The colour of the wires are a bit confusing.
|
There are no color standards for RS-232 wiring, you have to go by the
pin position. For DB-9 connectors its
1 NC
2 RXD
3 TXD
4 DTR
5 GND
6 DSR
7 RTS
8 CTS
9 NC
--
Rich Webb Norfolk, VA
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www.interfacebus.com
Guest
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| Posted:
Mon Feb 28, 2005 6:10 am Post subject:
Re: RS232 Colours |
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| He's correct, the wiring color code is not defined for RS232 |
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