Instruction manual

A758 Owner’s Guide Chapter 7: Programming Guide
September 1999 202
Flash Download Commands
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, use the command Switch to Flash
Download Mode, 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.
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.
Request Printer ID
ASCII:
GS NUL
Hexadecimal:
1D 00
Decimal:
29 0
Returns ACK (06 hex) + 12 bytes ASCII string describing the Flash Memory Boot
Sector Firmware part number. Ex : 189-1234567A