Datamax DGL Programmer's Reference Manual page 44

Chapter 3
<STX>KO GPIO Output
<STX>KS Configure Scalable Font Cache Size
<STX>P
<STX>T
<STX>Z
<STX>J
<STX>p
Partially Supported Commands
<STX>t
<STX>w
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PTX has its own GPIO configuration methods
PTX Font cache is configured in PRINTER CONTROL Menu
Enter Character Dump Mode
HexDump Mode is available in DIAGNOSTICS Menu
Printhead Dot Pattern Test Label
Print Configuration and Dot Pattern Labels
DIAGNOSTICS -> Printer Tests
Set Pause for each label
Controlled Pause
These commands can be supported by using PAA to filter out the
commands, and have GPIO put the printer in Single Label Mode.
A panel-key can then be assigned by GPIO to either print the next
label (for <STX>J ), or disable pause mode again (for <STX>p ).
Test DRAM Memory Module
Test FLASH Module
This command tests the DRAM / Flash, and reports back to the
host. DGL always reports 'OK' status.