# Serial (Printer)

(at the printer)

25 PIN D-SUB MALE at the printer.

Pin | Name | Dir | 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

Contributor: Joakim Ögren, Petr Krc

Source:
?

Copyright © The Hardware Book Team 1996-2001.
May be copied and redistributed, partially or in whole, as appropriate.
Document last modified: 2001-06-07