Compuprint MDP40B Programmer Manual - Manual (Page 196)

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ESC l
Resets the printer error status. (Olivetti PR2, PR40+, 2845)
ASCII Code ESC I
Hexadecimal Value 1B 6C
Decimal Value 27 108
ESC n
Olivetti controlled procedure selection. (Olivetti PR2, PR40+, 2845)
ASCII Code ESC n
Hexadecimal Value 1B 6E
Decimal Value 27 110
Selects the Olivetti controlled data exchange procedure (the only procedure accepted
in OLIVETTI emulation). The command is not accepted (command specification error)
if it is sent inside a printing field.
ESC o
Select free running mode. (Olivetti 2845)
ASCII Code ESC o
Hexadecimal Value 1B 6F
Decimal Value 27 111
This command is accepted (for compatibility with the past) only before the selection of
the "Olivetti controlled" selection. After an ESC n it generates a command error.