Serial Computer Configuration Recommendations (Rs-232C) - Lexmark FORMS 249X Technical Reference

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Serial Computer Configuration Recommendations (RS-232C)

For the correct operation of the serial adapter, you must configure the operating
system of the computer. The following examples show how to configure DOS
and OS/2 for the printer using serial DTR protocol.
DOS
From the DOS prompt, enter the following commands:
mode com1:9600,n,8,1
Include this command statement in the AUTOEXEC.BAT file on the computer
so it runs each time your system starts operating.
OS/2 1.2 and 1.3
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OS/2 2.0 and 2.1
Make sure the OS/2 serial port settings match the switch settings on the serial
adapter. To view or to change the settings:
Because all data transmissions require CTS, it must be detected prior to
the XON/XOFF protocol initiating. Once CTS is detected, after POR, the
printer transmits an XON command. It is not necessary for the host to
detect this initial XON command prior to transmitting data to the
printer.
The printer transmits an XOFF command to the host when the receive
buffer is full.
The printer transmits an XON command to the host when buffer space
becomes available and the printer is ready to receive more data.
From Desktop Manager or Group Utilities, select Utilities.
Select Control Panel.
Select Options.
Select Communications Port.
For the port you wish to set up, set the following parameters to match
the printer defaults.
Baud rate = 9600
Word length = 8
Parity = none
Stop bits =1
Handshake = hardware
Select Set.
Section 6: Using the Printer Interface
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