Axiohm 7156 Especificações Página 281

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Chapter 7: Programming Guide 7-153
Select Flash Memory Sector to Download
ASCII: GS STX n
Hexadecimal: 1D 02 n
Decimal: 29 2 n
Value of n: the Flash sector to which the next download
operation applies
Range of n: 0 – 7 (512K)
0 15 (1 mB)
0 31 (2 mB)
Selects the Flash sector (nn) for which the next download operation
applies. The values of the possible sector are restricted, depending
upon the Flash 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 Firmware 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 firmware 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.
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