### RJ-45 8-Wire ALTPIN Terminal/Printer Cable

Using an 8-pin RJ-45 plug, the following cable wiring supports most serial terminals or printers with either software or hardware handshaking using the Digi ALTPIN option.

Most terminals and printers use Request to Send/Clear to Send (RTS/CTS) for hardware handshaking. The cable shown supports this method.

##### ALTPIN Terminal/Printer Cable for Software (XON/XOFF) or Hardware (RTS/CTS) Handshaking

RJ-45 8-pin (Digi End) |  | DB-25 Male (Terminal/Printer)
--- | --- | ---
Signal | Pin | Pin | Signal
DCD* | 1 | connected to | 20 | DTR
RTS | 2 | connected to | 5 | CTS
GND | 3 | connected (via shield) to | Shell | GND
TxD | 4 | connected to | 3 | RxD
RxD | 5 | connected to | 2 | TxD
SG | 6 | connected to | 7 | SG
CTS | 7 | connected to | 4 | RTS
DTR | 8 | connected to | 6+8 | DSR+ DCD

* ALTPIN must be turned on for pin 1 to be DCD. When ALTPIN is enabled, DCD becomes available on pin 1 of an 8-pin RJ-45 connector (equivalent to pin 2 of a 10-pin connector).

Important: Some terminal or printer manufacturers may use different methods of flow control. Consult your documentation for specific wiring requirements.