User guide

135
Data Ports
Serial Data Port
6/29/11 110PAX4/R110PAX4 User Guide 57512L-004 Rev. A
Pin Configuration
Connect the serial data cable to the female DB-9 connector on the back of the print engine. For
all RS-232 connections through a DB-25 cable, use a DB-9 to DB-25 interface module (see
DB-9 to DB-25 Connections on page 137).
Table 19 shows the pin configuration of the serial data connector.
Table 19 • Serial Connector Pin Configuration
Pin No. Name
Description
1 – Unused and unterminated
2 RXD Receive data—data input to print engine
3 TXD Transmit data—data output from print engine
4 DTR Data terminal ready—output from print engine
5 SG Signal ground
6 DSR Data set ready—input to print engine
7 RTS Request to send—output from print engine
8 CTS Clear to send—input to print engine
9 +5 VDC +5 VDC at 750 mA
The maximum current draw may be limited by option
configuration.
Important • To enable this capability, a qualified
service technician must install a jumper on the
print engine’s main logic board on JP1, pins 2 and 3.