25 pin D-SUB MALE connector 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
|
| |
