Star Micronics DOT MATRIX PRINTER SP2000 - Manual (Page 49)

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FUNCTION Enables/disables automatic status
CODE <ESC> <RS> “a” n
(1B)H (1E)H (61)H n
OUTLINE This command sets the transmission conditions of the automatic
status. Initial values are according to DIP switch 1-6. See
Chapter 2 Automatic Status Specifications for details on the
contents of the automatic status.
Value of n Hex Automatic Status Valid/Invalid
0 or “0” (00H) or (30H) Invalid
1 or “1” (01H) or (31H) Valid
FUNCTION Resets printer hardware and produces a test print
CODE <ESC> “?” <LF> <NUL>
(1B)H (3F)H (0A)H (00)H
OUTLINE Resets the printers hardware and executes one self-test print.
After this command is sent, the next data is not sent until the
printer is confirmed to be back online.