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Parenthesis is not part of the command unless specified otherwise:
For example Esc K n CR
Escape Sequence: ESC K 1 CR
Hexadecimal: 1B 4B 31 0D
Decimal: 27 75 49 13
Note that CR means Carriage Return control character.
The following pages describe Datamax-O’Neil Command Language (ExPCL) components in more details. The commands have
been grouped based on major functions.
Communications
This section describes various methods of controlling the flow of data to and from the printer. The set of control characters
described below are used by the printer and the host while a communicating process is in place. Note that some handshaking
methods are only supported by the RS-232C Serial interface and are not supported for the USB, IrDA, Bluetooth, or Wi-Fi
interfaces.
End of Transmission EOT
The printer sends an EOT character each time the printer’s input buffer becomes empty (indicating that the printer is idle).
Control Code: EOT
Hexadecimal: 04
Decimal: 4
Note that this control character can be enabled and disabled using the command ESC P n. See detailed description of the
command in Section: “Printer Control: Data Processing”.
Transmitter On XON
When selected XON/XOFF as flow control method of serial communication, this character is transmitted by the printer to indicate
that the printer is on line and ready to receive data. After receiving this character the host computer will start sending data to the
printer.
Control Code: XON
Hexadecimal: 11
Decimal: 17
Transmitter Off XOFF
When selected XON/XOFF as flow control method of serial communication, this character is transmitted by the printer to indicate
that the printer’s buffer is nearly full and that the host computer should stop sending data. The communication process is
reestablished after the printer transmits XON character to the host.
Control Code: XOFF
Hexadecimal: 13
Decimal: 19