Serial (PC 9)
From HwB
Also known as EIA/TIA 574.
Pinout
9 PIN DE-9 MALE at the Computer.
9 PIN DE-9 FEMALE at the Cable.
| Pin | Name | RS232 | V.24 | Dir | Description |
|---|---|---|---|---|---|
| 1 | (D)CD | CF | 109 |  |
(Data) Carrier Detect |
| 2 | RXD | BB | 104 | |
Receive Data |
| 3 | TXD | BA | 103 |  |
Transmit Data |
| 4 | DTR | CD | 108.2 | |
Data Terminal Ready |
| 5 | GND | AB | 102 |  |
System Ground |
| 6 | DSR | CC | 107 | |
Data Set Ready |
| 7 | RTS | CA | 105 | |
Request to Send |
| 8 | CTS | CB | 106 | |
Clear to Send |
| 9 | RI | CE | 125 | |
Ring Indicator |
Notes:
- Direction is DTE (Computer) relative DCE (Modem).
- RS232 column is RS232 circuit name.
- V.24 column is ITU-TSS V.24 circuit name.
Technical
