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Home > Archive > alt.certification.cisco > May 2003 > Help, db-9 pin out color code
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| Author |
Help, db-9 pin out color code
|
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| Lowell 2003-05-29, 11:24 pm |
| I am making rollover cables and setting pin out for db-9 terminal adapter
for consoling into Cisco 2501. I have colored wires in db-9 adapter and
need to know the pin layout by color. Also if any two wires are to be
attached together, what is the best way to accomplish this. Thanks for any
help.
| |
| Chris O 2003-05-30, 7:24 am |
| Usual colour code is
RJ45 Pin
1 - Blue
2 - Orange
3 - Black
4 - Red
5 - Green
6 - Yellow
7 - Brown
8 - Grey
Pin config for the DB9 connector is in Table A-1 in the following link
http://www.cisco.com/univercd/cc/td...on/3810hwig/381
0cabl.htm#xtocid3
Chris O
_____________________
"Lowell" <centexlan@sbcglobal.net> wrote in message
news:HSABa.1212$su4.654545024@newssvr30.news.prodigy.com...
> I am making rollover cables and setting pin out for db-9 terminal adapter
> for consoling into Cisco 2501. I have colored wires in db-9 adapter and
> need to know the pin layout by color. Also if any two wires are to be
> attached together, what is the best way to accomplish this. Thanks for any
> help.
>
>
| |
| David M 2003-05-30, 11:25 am |
| On Fri, 30 May 2003 12:01:14 +0000 (UTC), "Chris O" <c.nospamo@aol.com>
wrote:
>
>"Lowell" <centexlan@sbcglobal.net> wrote in message
>news:HSABa.1212$su4.654545024@newssvr30.news.prodigy.com...
>> I am making rollover cables and setting pin out for db-9 terminal adapter
>> for consoling into Cisco 2501. I have colored wires in db-9 adapter and
>> need to know the pin layout by color. Also if any two wires are to be
>> attached together, what is the best way to accomplish this. Thanks for any
>> help.
>>
>>
>
>Usual colour code is
>RJ45 Pin
>1 - Blue
>2 - Orange
>3 - Black
>4 - Red
>5 - Green
>6 - Yellow
>7 - Brown
>8 - Grey
>
>Pin config for the DB9 connector is in Table A-1 in the following link
>http://www.cisco.com/univercd/cc/td...on/3810hwig/381
>0cabl.htm#xtocid3
>
>Chris O
>_____________________
(Fixed Pitch Font (Courier))
Hi,
I put one adaptor together used the following:-
On the side to insert pins
-------------------
\ 1 2 3 4 5 /
\ /
\ 6 7 8 9 /
-------------
DB9 | RJ45
Pin 1 Not used | Blue RTS
Pin 2 Yellow RXD | Orange DTR
Pin 3 Black TXD | Black TXD
Pin 4 Orange DTR | Red Common
Pin 5 Red & Green Common | Green Common
Pin 6 Brown DSR | Yellow RXD
Pin 7 Blue RTS | Brown DSR
Pin 8 White CTS | Gray Or White CTS
Pin 9 Not used
Note:-
1/
Red and green need to be joined so two adaptors can be used on a rollover
cable.
You do not have to do this if you just use the adaptor with a rollover cable
between computer and router. (Just use either red or green and tuck the
unused pin back into the shell.) Just dont use it for any other purpose.
If you wish to use an adaptor at each end of a rollover cable you require
the red and green to be joined. This is because the rollover connects red to
green and green to red on each end and if only one is connected at each end
there is the possibility of no common/ground between units.
2/
One very important thing to realise is that the advantage of this layout is
that it easily enables you to overcome one of the perrenial problems of
RS232 interfacing, namely connecting DTE to DTE OR DCE to DTE. This is done
by using either a rollover or a straight through cable (CAT5 straight
through (non-crossover) is suitable) as appropriate.
</Fixed Pitch>
--
Regards,
David
| |
| Chris O 2003-05-30, 1:24 pm |
| As David says in 2/, the Cisco layout of the RS232 interface on the RJ45
port helps with the DTE/DCE selection.
Cisco uses a proprietary pin configuration on their RJ45 Serial (RS232)
ports rather than the industry standard (EIA/TIA-561). As well as the
console port, this also applies to the Aux port and the RJ45 Serial ports on
the Access Server products such as AS2509-RJ and AS2511-RJ.
The way the signals are assigned to the pins allows you to use the rollover
cable to connect back-to-back directly from the port on one router to the
port on another - e.g. Aux Port to Aux Port or AS2509 serial port on one to
Aux port on another. i.e. the cable operates as a null-modem cable when
connecting RJ45 presented serial ports.
FYI, The industry standard pinning (EIA/TIA-561 Standard) is shown at
http://www.zytrax.com/tech/layer_1/..._rs232.htm#rj45
Chris
______________________________
_____________________________
"David M" <dmann10@hotmail.com> wrote in message
news:3ed77c7c.748933@news.mpx.com.au...
> On Fri, 30 May 2003 12:01:14 +0000 (UTC), "Chris O" <c.nospamo@aol.com>
> wrote:
> >
> >"Lowell" <centexlan@sbcglobal.net> wrote in message
> >news:HSABa.1212$su4.654545024@newssvr30.news.prodigy.com...
> >> I am making rollover cables and setting pin out for db-9 terminal
adapter
> >> for consoling into Cisco 2501. I have colored wires in db-9 adapter
and[c
olor=darkred]
> >> need to know the pin layout by color. Also if any two wires are to be
> >> attached together, what is the best way to accomplish this. Thanks for[/color]
any[c
olor=darkred]
> >> help.
> >>
> >>
> >
> >Usual colour code is
> >RJ45 Pin
> >1 - Blue
> >2 - Orange
> >3 - Black
> >4 - Red
> >5 - Green
> >6 - Yellow
> >7 - Brown
> >8 - Grey
> >
> >Pin config for the DB9 connector is in Table A-1 in the following link
>
>http://www.cisco.com/univercd/cc/td...con/3810hwig/38[/color]
1
> >0cabl.htm#xtocid3
> >
> >Chris O
> >_____________________
>
> (Fixed Pitch Font (Courier))
>
> Hi,
>
> I put one adaptor together used the following:-
>
> On the side to insert pins
>
> -------------------
> \ 1 2 3 4 5 /
> \ /
> \ 6 7 8 9 /
> -------------
> DB9 | RJ45
> Pin 1 Not used | Blue RTS
> Pin 2 Yellow RXD | Orange DTR
> Pin 3 Black TXD | Black TXD
> Pin 4 Orange DTR | Red Common
> Pin 5 Red & Green Common | Green Common
> Pin 6 Brown DSR | Yellow RXD
> Pin 7 Blue RTS | Brown DSR
> Pin 8 White CTS | Gray Or White CTS
> Pin 9 Not used
>
> Note:-
>
> 1/
> Red and green need to be joined so two adaptors can be used on a rollover
> cable.
>
> You do not have to do this if you just use the adaptor with a rollover
cable
> between computer and router. (Just use either red or green and tuck the
> unused pin back into the shell.) Just dont use it for any other purpose.
>
> If you wish to use an adaptor at each end of a rollover cable you require
> the red and green to be joined. This is because the rollover connects red
to
> green and green to red on each end and if only one is connected at each
end
> there is the possibility of no common/ground between units.
>
> 2/
> One very important thing to realise is that the advantage of this layout
is
> that it easily enables you to overcome one of the perrenial problems of
> RS232 interfacing, namely connecting DTE to DTE OR DCE to DTE. This is
done
> by using either a rollover or a straight through cable (CAT5 straight
> through (non-crossover) is suitable) as appropriate.
>
> </Fixed Pitch>
>
>
> --
>
> Regards,
>
> David
| |
| David M 2003-05-31, 10:24 am |
| On Fri, 30 May 2003 15:46:32 GMT, dmann10@hotmail.com (David M) wrote:
>
>(Fixed Pitch Font (Courier))
>
>Hi,
>
>I put one adaptor together used the following:-
>
>On the side to insert pins
>
> -------------------
> \ 1 2 3 4 5 /
> \ /
> \ 6 7 8 9 /
> -------------
> DB9 | RJ45
>Pin 1 Not used | Blue RTS
>Pin 2 Yellow RXD | Orange DTR
>Pin 3 Black TXD | Black TXD
>Pin 4 Orange DTR | Red Common
>Pin 5 Red & Green Common | Green Common
>Pin 6 Brown DSR | Yellow RXD
>Pin 7 Blue RTS | Brown DSR
>Pin 8 White CTS | Gray Or White CTS
>Pin 9 Not used
>
>Note:-
>
>1/
>Red and green need to be joined so two adaptors can be used on a rollover
>cable.
>
>You do not have to do this if you just use the adaptor with a rollover cable
>between computer and router. (Just use either red or green and tuck the
>unused pin back into the shell.) Just dont use it for any other purpose.
>
>If you wish to use an adaptor at each end of a rollover cable you require
>the red and green to be joined. This is because the rollover connects red to
>green and green to red on each end and if only one is connected at each end
>there is the possibility of no common/ground between units.
>
>2/
>One very important thing to realise is that the advantage of this layout is
>that it easily enables you to overcome one of the perrenial problems of
>RS232 interfacing, namely connecting DTE to DTE OR DCE to DTE. This is done
>by using either a rollover or a straight through cable (CAT5 straight
>through (non-crossover) is suitable) as appropriate.
>
></Fixed Pitch>
Hi,
Sorry to reply to my own post but I had a thought along the line that
because the adaptor comes with an unloaded connector with pre-crimped leads
doesn't mean that they have to be used. (Sometimes thought gets caught in a
groove.)
It may be possible, if you really want to be compatible, to cut the
pre-crimped leads off and use a regular solder type socket instead.
I havn't tried this yet - so, depending on the lead lengths and soldering
skills, this might be a better way to go.
--
Regards,
David
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