Nv Memory; Nv Graphics Memory; User Nv Memory; Customized Values And Memory Switches - Epson TM-P20 Technical Reference Manual

NV Memory

The printer's NV memory (Non-Volatile memory) stores data even after the printer power is turned off. NV
memory contains the following memory areas for the user:
 NV graphics memory
 User NV memory
 Customized values and memory switches
 User-defined page
 Maintenance counter
As a guide when you program applications, NV memory should be rewritten 10 or fewer times a day.

NV Graphics Memory

Graphics, such as shop logos to be printed on receipts, can be stored. Even if communication speed is low, high
speed graphic printing is possible.
Use the TM-P20 Utility to register graphics. You can also print and confirm the registered graphics in the TM-
P20 Utility or NV graphics print mode.
 For detailed information about the TM-P20 Utility, see the TM-P20 Utility User's Manual.
 To use the NV graphics print mode, see

User NV Memory

You can store and read text data for multiple purposes, such as for storing a note including customizing or
maintenance information of the printer.
Use ESC/POS commands to store and read the text data.
For detailed information about ESC/POS commands, see the ESC/POS Command Reference (see
POS" on page

Customized Values and Memory Switches

With the customized values and memory switches, which are software switches for the printer, you can
configure various settings of the printer.
To set the customized values and memory switches, see

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.
28
"NV graphics information print mode" on page
69).
"Software Settings" on page
56.
"ESC/
47.