Epson A794-D100 - Manual (Page 134)

Chapter 6: Programming Information A794 Owner’s Guide
March 1999 128
Erase User Flash Sector
Erases a page of flash memory and sends a carriage return when the operation is
complete.
ASCII GS @ n
Hexadecimal 1D 40 n
Decimal 29 64 n
Value of n 49-50
n = 49 (ASCII n = 1)
This command erases the entire 64K page available for user-defined characters and
multiple logos. The page should be erased in two situations: when the logo definition
areas 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.
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 five seconds after sending the Erase User Flash Sector (1D 40
n) command before sending data.
Reset Firmware
Reboots the printer.
ASCII GS (SPACE)
Hexadecimal 1D FF
Decimal 29 255