Lexmark 642e MFP manual Serial

Using MFP menus

Serial <x>

Use these menu items to change printer settings affecting jobs sent to the MFP through an optional serial port.

Menu item	Purpose	Values and descriptions
PCL	Configures the MFP so it	On*	On—The MFP examines the data at
SmartSwitch	automatically switches to PCL	Off	the serial interface and selects PCL
	emulation when a print job received		emulation if the data indicates that is
	through the serial port requires it,		the required printer language.
	regardless of the default printer		Off—The MFP does not examine the
	language.
			incoming data. The MFP uses
			PostScript emulation to process the
			job if PS SmartSwitch is On, or uses
			the default printer language specified
			in the Setup Menu if PS SmartSwitch
			is Off.
PS SmartSwitch	Configures the MFP so it	On*	On—The MFP examines the data at
	automatically switches to PostScript	Off	the serial interface and selects
	emulation when a print job received		PostScript emulation if the data
	through the serial port requires it,		indicates that is the required printer
	regardless of the default printer		language.
	language.		Off—The MFP does not examine the
			incoming data. The MFP uses PCL
			emulation to process the job if PCL
			SmartSwitch is On, or uses the default
			printer language specified in the
			Setup Menu if PCL SmartSwitch is Off.
NPA Mode	Specifies whether the MFP	On	The MFP performs NPA processing. If
	performs the special processing		data is not in NPA format, it is rejected
	required for bidirectional		as bad data.
	communication, following the
		Off	The MFP does not perform NPA
	conventions defined in the Network
	Printing Alliance (NPA) Protocol.		processing.
	Note: Changing this menu item
		Auto*	The MFP examines the data to
	automatically resets the MFP. It is
			determine the format and then
	reset to configure memory, and any
			processes it appropriately.
	permanent resources, such as fonts
	or macros, are lost.
Serial Buffer	Configures the size of the serial	Auto*	The MFP automatically calculates the
	input buffer.		Serial Buffer size (recommended
	Note: Changing the Serial Buffer		setting).
	menu item automatically resets the	3KB to maximum	The user specifies the Serial Buffer
	MFP. Any permanent resources,
		size allowed	size. The maximum size depends on
	such as fonts or macros, are lost.
		(1KB increments)	the amount of memory in the MFP, the
			size of the other link buffers, and
			whether Resource Save is set to On or
			Off. To maximize the range for the
			Serial Buffer size, disable or reduce
			the size of the parallel and USB
			buffers.
Serial Protocol	Selects the hardware and software	DTR*	Hardware handshaking
	handshaking values for the serial
		DTR/DSR	Hardware handshaking
	interface.
		XON/XOFF	Software handshaking
		XON/XOFF/DTR	Combined hardware and software
			handshaking
		XONXOFF/DTRDSR	Combined hardware and software
			handshaking

Network/Ports

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