RS-232 Information Database
Pin Details
| 9way Pin |
What? |
25way Pin |
What? |
| Pin 1 |
Dcd |
Pin 1 |
NC |
| Pin 2 |
Rx |
Pin 2 |
Tx |
| Pin 3 |
Tx |
Pin 3 |
Rx |
| Pin 4 |
Dtr |
Pin 4 |
Rts |
| Pin 5 |
Gnd |
Pin 5 |
Cts |
| Pin 6 |
Dsr |
Pin 6 |
Dsr |
| Pin 7 |
Rts |
Pin 7 |
Gnd |
| Pin 8 |
Cts |
Pin 8 |
Dcd |
| Pin 9 |
Ri |
Pin 9 |
TxLoop+ |
| |
|
Pin 10 |
NC |
| |
|
Pin 11 |
TxLoop- |
| Direct |
Conv |
Pin 12 |
NC |
| From 9p |
to 25p |
Pin 13 |
NC |
| 1 |
8 |
Pin 14 |
NC |
| 2 |
3 |
Pin 15 |
NC |
| 3 |
2 |
Pin 16 |
NC |
| 4 |
20 |
Pin 17 |
NC |
| 5 |
7 |
Pin 18 |
RXLoop+ |
| 6 |
6 |
Pin 19 |
NC |
| 7 |
5 |
Pin 20 |
Dtr |
| 8 |
5 |
Pin 21 |
NC |
| 9 |
22 |
Pin 22 |
Ri |
| |
|
Pin 23 |
NC |
| |
|
Pin 24 |
NC |
| |
|
Pin 25 |
RxLoop- |
Half duplex Null Modem
| From 9 pin |
to 9 pin |
to 25 pin |
From 25 Pin |
| 2 |
3 |
2 |
3 |
| 3 |
2 |
3 |
2 |
| 5 |
5 |
7 |
7 |
Full duplex Null Modem
| From 9 pin |
To 9 pin |
To 25 pin |
From 25 pin |
| |
|
1 |
1 |
| 3 |
2 |
3 |
2 |
| 2 |
3 |
2 |
3 |
| 7 |
8 |
5 |
4 |
| 8 |
7 |
4 |
5 |
| 6 |
4 |
20 |
6 |
| 4 |
6 |
6 |
20 |
| 5 |
5 |
7 |
7 |
Disclaimer: this information is provided as is and is not guarateed
against any errors.The author is not responsible for any inaccuracies in
the above data.
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