User-Defined Page; Maintenance Counter - Epson TM-T20III Technical Reference Manual

User-defined Page

You can store character data in the user-defined page (character code table: page 255) so that you can also print
characters not resident in the printer.

Maintenance Counter

With this function, printer information, such as the number of lines printed, the number of autocuts, and
printer operation time after the printer starts working, is automatically stored in NV memory. You can use the
counter information for periodical checks or part replacement.
You can also check the print head running length and number of times of autocutting with the self-
test (see "Self-test Mode" on page 52).
Chapter 1 Product Overview
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