4 Appendix Rev. A
Confidential
XON/XOFF Transmission Timing
When XON/XOFF control is selected by the DIP switch, the printer transmits XON/OFF to the
host according the table below.
Note:
For the different models, XON/XOFF transmission timing differs, depending on the settings of the off-line
conditions by the DIP switches. Refer to the specifications for the printers.
(*1)ON is not transmitted when the receive buffer is full.
(*2)XOFF is not transmitted when the receive buffer is full.
Note:
The XON code is 11H and the XOFF code is 13H.
Data Format When Using RS-485
Transmission data (8 bits, no parity)
RS-485 Communication data format
"H" indicates:
Printer transmission data SD1 < SD2
Printer reception data RD1 < RD2
XON/XOFF transmission timing
Printer status
Off-line status
DIP SW status
ON OFF
XON
transmission
• When the printer goes on line after turning on the
power or reset using the interface.
Transmission Transmission
• When the receive buffer is released from the buffer-
full state.
Transmission Transmission
• When the printer switches from off line to on line (*1). — Transmission
• When the printer recovers from an error through a
command.
— Transmission
XOFF
transmission
• When the receive buffer becomes full. Transmission Transmission
• When the printer switches from on line to off line (*2). Transmission Transmission
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START
STOP
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