August 24, 2004
Erase flash EPROM sector
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Send checksum of flash EPROM sector
RS-232 Syntax:
ESC # n or X'1B;23;n'
where:
n
01
downloaded graphics
02
predefined messages
03
user-defined impact character set
04
user-defined thermal character sets
05
flash storage
06 - 07
Reserved
08
check storage area
09 - FF
Reserved
Purpose:
To erase the flash EPROM before downloading the data into the printer.
Remarks:
The command should only be sent to the printer when the buffer is empty
(status byte 2, bit 6). No other commands should be sent until this
command is complete.
Status byte 3, bit 7 (command complete bit) is set to show erasing is
finished and the command is complete.
The flash EPROM is guaranteed for a minimum life of 100,000 write/erase
commands by the Flash manufacturer.
RS-232 Syntax:
ESC " n or X'1B;22;n'
where:
n =
01
downloaded graphics
02
predefined messages
03
user-defined impact character set
04
user-defined thermal character sets
05
flash storage
06
Reserved
Purpose:
To verify data integrity of the data loaded in the flash EPROM in the printer.
A 2-byte checksum is returned.
Appendix C. RS-232 programming information
121