TH210
Programmer’s Guide
105
The printer never goes directly from the download mode to normal printer operation. To return to
normal printer operation either the operator must turn the power off and then on to reboot or the
application must send a command to cancel download mode and reboot.
When each flash download command is received, the printer returns either ACK or NAK to the host
computer when each command is received:
ACK (hexadecimal 06)
Sent when the printer has received a host transmission and has completed the
request successfully.
NAK (hexadecimal 15)
Sent when a request is unsuccessful.
Communicates to the printer information downloaded from applications. Data is downloaded to
flash memory to query the state of the firmware, calculate the firmware CRC and other functions.
Switch to flash download mode
ASCII
ESC [ }
Hexadecimal
1B 5B 7D
Decimal
27 91 125
Puts the printer in flash download mode in preparation to receive commands controlling the
downloading of objects into flash memory. When this command is received, the printer leaves
normal operation and can no longer print transactions until the reboot the printer command (1D
FF) is received or the printer is rebooted.
This command does not affect the current communication parameters. Once the printer is in flash
download mode, this command is no longer available.
Related information
See entering flash download mode elsewhere in this book to put the printer in flash download
mode using the configuration menu.
Erase all flash contents except boot sector
ASCII
GS SO
Hexadecimal
1D 0E
Decimal
29 14
Causes the entire flash memory to be erased.
The printer returns ACK if the command is successful; NAK if it is unsuccessful.
Exceptions
Available only in download mode.
Return main program flash CRC
ASCII
GS SI
Hexadecimal
1D 0F
Decimal
29 15
Returns the CRC calculated over the flash firmware code space. The format of the response is ACK
<low byte> <high byte>.
Содержание TH210
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