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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 memory switch 1-3.
Code
The hexadecimal numbers corresponding to the XON/XOFF codes are shown below.
• XON code: 11H
•XOFF code: 13H
Signal Printer status
Memory switch 1-3
1 (ON) 0 (OFF)
XON 1) When the printer goes online after turning on the power 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
• 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.
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