Interfaces
8-12
Using an IBM-Compatible Personal Computer with Serial Interface RS-232C
Note:
These instructions are for connecting the printer to an IBM-compatible
personal computer using a dual asynchronous adapter or an external print
server.
If you are using any of the above products, or if your computer has a 9-pin D shell
connector that conforms to the IBM designed 9-pin serial port, use a 9-pin to 25-pin
cable, such as IBM Part Number 6450242 (254 mm or 10 in.).
Null modem cables, such as Lexmark part number 1038693 [15.24 m (50 ft)], will
connect the converter cable to the printer. The illustration below represents the 25-pin
connectors for the RS-232C cable (1038693).
4
RTS
Out
Request to Send. The printer sets this signal high and the
signal remains high while the printer is on.
5
CTS
In
Clear to Send. This pin is optionally used for serial data flow
control protocol when in serial mode.
6
DSR
In
Data Set Ready. This pin is optionally used for data
validation, depending on the Honor DSR setting, or flow
control, depending on the Serial Protocol setting.
7
GND
Logic Ground
20
DTR
Out
Data Terminal Ready. This pin is optionally used for serial
data flow control protocol when in serial mode.
Table 8-3: Dedicated Serial Connector Pin Assignments (RS-232C) (Continued)
Pin
Signal
Direction
Description
25
13
14
1
