CognitiveTPG A760 - Manual (Page 126)

A760 User Guide: Programming Supplement
Chapter 4: Programming commands 126 Revision F January 2010
Flash download
These commands are used to load firmware into the printer.
The commands are listed in numerical order according to their hexadecimal codes. Each command
is described and the hexadecimal, decimal, and ASCII codes are listed.
There are three ways to enter the download mode.
1. Powering the printer up with DIP Switch 1 up.
2. While the printer is running normally, send the
command, “Switch to flash download mode”
(1B 5B 7D) to leave normal operation and enter the
download mode.
3. If the flash if found corrupted during level 0 diagnostics
the download mode is automatically entered after the
printer has reset.
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. DIP switch 1 must
in DOWN position during reboot to return to normal
printer operation.
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.