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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 fed, and printer operation
time after the printer starts working, is automatically stored in NV memory. You can read or
reset the information with TM-P80 Utility, the Status API of the APD, or OPOS ADK to use it for
periodical checks or par
t replacement.
Maintenance counter values are usually saved every two minutes except in the power
saving status. However, if the printer power is turned off by removing the battery or using up
the battery charge, the latest maintenance counter will not be saved. For detailed
information about ESC/POS commands (“GS g 0”, “GS g 2”), see the ESC/POS Command
Reference (see "ESC/POS Commands" on page 56).