Filter
Top Products
Chapter 5: Programming commands 127
A776-PG00001 C 12/09 A776 (B780) Programming Guide
Return boot sector rmware part number
ASCII GS NULL
Hexadecimal 1D 00
Decimal 29 0
Returns ACK (Hex 06) + 12 bytes ASCII string describing the ash memory boot sector rmware part number.
Ex : 189–1234567A
Exceptions
Available only in download mode.
Return segment number status of ash memory
ASCII GS SOH
Hexadecimal 1D 01
Decimal 29 1
Returns the size of the ash used. There may be 16
(1 Meg) or 32 (2 Meg) sectors in ash memory. This command assures that the rmware to be downloaded is the appropriate
size for ash memory. The value returned is the maximum sector number that can be accepted by the select sector to
download (1D 02 nn) command.
Exceptions
Available only in download mode.
Select ash memory sector to download
ASCII GS STX nn
Hexadecimal 1D 02 nn
Decimal 29 2 nn
Value of n: The ash sector to which the next
download operation applies
Range of n: 0
Selects the ash sector (n) for which the next download operation applies. The values of the possible sector are restricted,
depending upon the ash part type. The printer transmits an ACK if the sector number is acceptable or an NAK if the sector
number is not acceptable. Sector numbers start at 0.
Exceptions
Available only in download mode.
Get rmware CRC
ASCII GS ACK
Hexadecimal 1D 06
Decimal 29 6
Causes the printer to calculate the CRC for the currently selected sector and transmits the result. This is performed normally
after downloading a sector to verify that the downloaded rmware is correct. The printer also calculates the CRC for each
sector during power up and halts the program if any sector is erroneous.
The printer transmits ACK if the calculated CRC is correct for the selected sector; NAK if the CRC is incorrect or if no sector is
selected.
Return microprocessor CRC
ASCII GS BEL
Hexadecimal 1D 07
Decimal 29 7
Returns the CRC calculated over the boot sector code space.
Formulas
ACK <low byte> <high byte>