Serial (RJ-11) Alternative Connector
The printer operates as a Data Communication Equipment (DCE) and those printers with ethernet connectors also have an alternative serial
Note that looking into the printer's connector with the key notch pointing down, pins are numbered from left to right.
Host
DCD
RxD
TxD
DTR
GND
DSR
RTS
CTS
RI
| |||||||
| Pin # | Pin # | |||||
| |||||||
|
| 1 |
| 1 |
|
|
|
|
|
|
|
|
| ||
| 2 |
|
|
|
| ||
| 3 |
| 2 |
|
|
| |
| 4 |
| 3 |
|
|
| |
|
| 5 |
| 4 |
|
|
|
|
|
|
|
| |||
| 6 |
| 5 |
|
|
| |
|
| ||||||
|
| 7 |
| 6 |
|
|
|
|
|
|
|
|
| ||
| 8 |
|
|
|
|
| |
| 9 |
|
|
|
|
| |
|
|
|
|
|
|
|
|
Female
*+5 volts @ 160 mA max.
Printer
RxD
TxD
BUSY GND +5V*
RTS
Pin 4 |
|
|
|
|
|
|
| Pin 3 |
Pin 5 |
|
|
|
|
|
|
| Pin 2 |
Pin 6 |
|
|
|
|
|
|
| Pin 1 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Front View of
Modular Connector
| 45 |