Lexmark C935 User Guide
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.
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.).
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).
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.
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.
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.
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.
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