User manual
OEM Device Configuration Guide
revision 3 — 17
Option Bus Address
Add jumper P4 if there is another device at options bus address 14. When a jumper is installed on both pins,
the option bus corresponds to address 13. When the jumper is placed on only the bottom pin, it is option bus
address 14.
3.1.2 DB9 Socket Layout
The DB9 socket layout is as follows:
Note: The DS7412 serial port is wired as a DTE device; therefore, if the printer is a DCE device (most
common), a straight 9-pin to 9-pin or straight 9-pin to 25-pin cable may be used. If the printer is
wired as a DTE device, a null modem 9-pin to 9-pin or a null modem 9-pin to 25-pin cable is
required. Refer to the user guide provided with your printer for proper wiring requirements.
If you are using a non-standard printer configuration, you must make a custom cable using the table
above.
Connections shown in bold are the minimum required connections when using XON/XOFF
software flow control. If using the configuration, these are the only connections needed.
Connections in (parentheses) are optional.
3.1.3 Configure the DS7412
The DS7412 serial interface module must be configured using the keypad connected to the DS7400Xi.
DS7412
9-pin connector
DCE
9-pin
DTE
9-pin
DCE
25-pin
DTE
25-pin
1 DCD (not used 1 DCD 1 DCD (6) 8 DCD 8 DCD (6)
2 RxD 2 Rxd 3 TxD 3 RxD 2 TxD
3 TxD 3 TxD 2 RxD 2 TxD 3 RxD
4 DTR 4 DTR 6 DSR 20 DTR 6 DSR
5 GND5 GND5 GND7 GND7 GND
6 DSR 6 DSR 4 DTR 6 DSR 20 DTR
7 RTS 7 RTS 8 CTS 4 RTS 5 CTS
8 CTS 8 CTS 7 RTS 5 CTS 4 RTS
9 RI (not used) 9 RI 9 RI 22 RI 22 RI