CognitiveTPG A798 - Manual (Page 99)

Chapter 4: Programming Commands 99 Revision C 12/09
A798-PG00001C
Erase user flash sector
ASCII GS @ n
Hexadecimal 1D 40 n
Decimal 29 64 n
Value of n: 49 – 51
n = 49 (ASCII n = 1) HEX 31
This command erases all 64K flash memory sectors allocated to user-defined character and logos storage. Those sectors
should be erased in two situations: when the logo definition area is full and an application is attempting to define new
logos, and when an application wants to replace one user-defined character set with another. In both cases, all logos and
character set definitions are erased and must be redefined.
n = 50 (ASCII n = 2) HEX 32
This command erases all sectors available for user data storage.
n = 51 (ASCII n = 3) HEX 33
This command uses all sectors available for permanent fonts.
Erases a page of flash memory and sends a carriage return when the operation is complete.
Related information
See command “Flash memory user sectors allocation” (1D 22 55 n1 n2).
See also command “Expand flash memory allocation” (1D 22 80...).
Important: While erasing flash memory, the printer disables all interrupts, including communications. To provide feedback
to the application, the printer responds to the application when the erase is complete. After sending the erase user flash
sector (1D 40 n) command, an application should wait for the response from the printer before sending data. Otherwise,
data will be lost. If an application is unable to receive data, it should wait a minimum of ten seconds after sending the
erase user flash sector (1D 40 n) command before sending data.