Epson EPL-6100 Reference Manual page 150

Code Page (I239X only)
Allows you to select the character table. Character tables contain
the characters and symbols used in different languages. The
printer prints the text based on the selected character table.
Port Selection button
Click Port Selection on the Remote Control Panel screen and the
following dialog box appears:
Note:
Use Next and Prev to access all available setting options.
Parallel I/F
Allows you to choose whether to activate the parallel port. The
default is On.
Parallel Speed
Allows you to specify the pulse width of the ACKNLG signal on
receiving data through the parallel port. When this option is set
to Fast (default), the pulse width is about 1 NS. When this option
is set to Normal, the pulse width is about 10 NS.
48 Using the Remote Control Panel Utility