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Appendix
67
XON/XOFF
When XON/XOFF control is selected, the printer transmits the XON or XOFF signals as follows.
The transmission timing of XON/XOFF differs, depending on the setting of DIP switch 2-1.
Code
The hexadecimal numbers corresponding to the XON/XOFF codes are shown below.
• XON code: 11H
•XOFF code: 13H
Signal Printer status
DIP switch 2-1
1 (ON) 0 (OFF)
XON 1) When the printer goes online after turning on the power (or
reset using the interface)
Transmit Transmit
2) When the receive buffer is released from the buffer full state Transmit Transmit
3) When the printer switches from offline to online — Transmit
4) When the printer recovers from an error using some ESC/POS
commands
—Transmit
XOFF 5) When the receive buffer becomes full Transmit Transmit
6) When the printer switches from online to offline — Transmit
CAUTION
• When the printer goes from offline to online and the receive buffer is full, XON is not
transmitted.
• When the printer goes from online to offline and the receive buffer is full, XOFF is not
transmitted.
• When DIP switch 1-3 is off, XON is not transmitted as long as the printer is offline, even
if a receive buffer full state has been cleared.