Compuprint 9060LA - Manual (Page 104)

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For each of the interfaces, you can then select one of the following protocols:
Value Definition
DEC PPL2 Sets the DEC PPL2 protocol to communicate with Digital or ANSI-
compatible host software. This is the Factory setting when using the serial
protocol.
IBM XL24E Sets the IBM Proprinter XL24E protocol to communicate with host
software.
This is the Factory setting for Macro 2 and 4 when selecting the parallel
protocol.
EPSON ESC/P Sets the EPSON ESC/P protocol to communicate with host software.
This is the Factory setting for Macro 1 and 3 when selecting the parallel
protocol.