Using a 10-pin RJ-45 plug, the following cable wiring supports most serial terminals or printers with either software or hardware handshaking. This cable is valid with any Digi RJ-45 serial port.
Most terminals and printers use Request to Send/Clear to Send (RTS/CTS) for hardware handshaking. The cable shown supports this method.
| RJ-45 10-pin (Digi End) |
DB-25 Male (Terminal/Printer) |
|||
|---|---|---|---|---|
| Signal | Pin | Pin | Signal | |
| DSR+DCD* | 2+10 |
connected to |
20 |
DTR |
|
RTS |
3 |
connected to |
5 |
CTS |
|
GND |
4 |
connected (via shield) to |
Shell |
GND |
|
TxD |
5 |
connected to |
3 |
RxD |
|
RxD |
6 |
connected to |
2 |
TxD |
|
SG |
7 |
connected to |
7 |
SG |
|
CTS |
8 |
connected to |
4 |
RTS |
|
DTR |
9 |
connected to |
6+8 |
DSR+DCD |
* ALTPIN must be turned off for DCD to be on pin 10.
Important: Some terminal or printer manufacturers may use different methods of flow control. Consult your documentation for specific wiring requirements.