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A794 Owner’s Guide Chapter 6: Programming Information
March 1999 91
Transmit Printer ID, Remote Diagnostics Extension
Performs the remote diagnostic functions specified by n.
Each returned message is defined as: n + data + <CR>
ASCII GS I @ n
Hexadecimal 1D 49 40 n
Decimal 29 73 64 n
Values of n Refer to table
Value of
n
Remote diagnostic item Function
Hex Dec
20 32 Serial #,
10 digit ASCII
Write to NVRAM
Example, send 14 bytes to printer:
GS I @ 0x20 1234567890
21 33 Serial # Write to NVRAM, and print on receipt to
verify
Example, send 14 bytes to printer:
GS I @ ! 1234567890
This will print on receipt:
Serial # written: 1234567890
22 34 Serial # Not available, cannot clear Serial # item
23 35 Serial # Return Serial #, preceded by n to identify
Printer returns 12 bytes in above example:
#1234567890<CR>
24 36 Class/model #,
15 digit ASCII
Write to NVRAM
25 37 Class/model # Write to NVRAM, and print on receipt to
verify
26 38 Class/model # Not available, cannot clear Class/model # item
27 39 Class/model # Return Class/model #, returns 17 bytes
28 40 Boot firmware part # Not available, cannot write to ROM
29 41 Boot firmware part # Not available, cannot write to ROM
2A 42 Boot firmware part # Not available, cannot write to ROM
2B 43 Boot firmware part #,
12 digit ASCII
Return Boot firmware part #, returns 14 bytes
2C 44 Boot firmware CRC Not available, cannot write to ROM
2D 45 Boot firmware CRC Not available, cannot write to ROM
2E 46 Boot firmware CRC Not available, cannot write to ROM
2F 47 Boot firmware CRC,
4 digit ASCII
Return Boot firmware CRC, returns 6 bytes
30 48 Flash firmware part # Not available, cannot write to ROM