 |
DB25 pin D-SUB male (at the printer) |
| Pin | Name | Direction | Description |
|---|---|---|---|
| 1 | SHIELD | Shield Ground | |
| 2 | TXD | → | Transmit Data |
| 3 | RXD | ← | Receive Data |
| 4 | n/c | – | Not connected |
| 5 | n/c | – | Not connected |
| 6 | DSR | ← | Data Set Ready |
| 7 | GND | System Ground | |
| 8 | DCD | ← | Data Carrier Detect |
| 9 | n/c | – | Not connected |
| 10 | n/c | – | Not connected |
| 11 | ? | → | Reverse Channel |
| 12 | n/c | – | Not connected |
| 13 | n/c | – | Not connected |
| 14 | n/c | – | Not connected |
| 15 | n/c | – | Not connected |
| 16 | n/c | – | Not connected |
| 17 | TTY-TXD | → | TTY Receive Data |
| 18 | n/c | – | Not connected |
| 19 | n/c | – | Not connected |
| 20 | DTR | → | Data Terminal Ready |
| 21 | n/c | – | Not connected |
| 22 | n/c | – | Not connected |
| 23 | ? | → | TTY Receive Data Return |
| 24 | ? | ← | TTY Transmit Data Return |
| 25 | TTY-RXD | ← | TTY Receive Data |