Printek 4503 User Manual

IBM Proprinter Emulation

Page 4-3

Control Codes and Escape Sequences

Grouped by Function

Communications

Cancel Line

CAN

Cancels all printable text in the current print line. Does not affect any control codes
or escape sequences.

Control code:

CAN

Hexadecimal:

End of Text

ETX

If "ETX/ACK: On" is specified in the "Setup: INTERFACE" menu, then receipt of an
ETX causes the printer to transmit an ACK to the host computer.

Since the ETX may be a legal value within an escape sequence, it is the user's
responsibility to ensure that an ETX used for data handshake is not sent within an
escape sequence. The user must also ensure that the maximum block size or the
number of blocks sent at one time does not exceed the input buffer size of the printer.

ETX/ACK handshake is available only with serial I/O. It is not available when using
the parallel interface or the coaxial/twinaxial interface.

If character set 2 is selected, ETX will be treated as a printable character instead of an
I/O handshake control code.

Control code:

ETX

Hexadecimal:

Deselect Printer

ESC Q n

Deselects the printer. Use of this command is discouraged, because the printer will
remain offline until an operator presses the ONLINE button on the control panel.

For a Proprinter II or Proprinter III, n should be 3. For a Proprinter XL or Proprinter
III XL, n should be 22. It does not really matter, because n will be ignored.

Example: The following escape sequence will force the printer offline.

Escape Sequence:

ESC

Hexadecimal: