Lexmark 12N0004 User's Guide - Page 287
PS SmartSwitch, Robust XON, RS-232/RS-422
UPC - 734646560047
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PS SmartSwitch Purpose: To configure the printer so it automatically switches to PostScript emulation when a print job received through the serial port requires it, regardless of the default printer language. Values: On* Off Printer examines data on the serial interface and selects PostScript emulation if the data indicates that is the required printer language. Printer does not examine the incoming data. The printer 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. See also: PCL SmartSwitch; Printer Language Robust XON Purpose: To determine whether the printer communicates availability to the computer. Values: Off* Printer waits to receive data from the computer. On Printer sends a continuous stream of XONs to the host computer to indicate that the serial port is ready to receive more data. This menu item only applies to the serial port if Serial Protocol is set to XON/XOFF. RS-232/RS-422 Purpose: To specify the type of serial communication. Values: RS-232* RS-422 Note: Selecting RS-422 automatically sets Serial Protocol to XON/XOFF. 285