
1-16 Features and General Specifications Rev. A
Notes:
• The XON code is <11>H and the XOFF code is <13>H.
• In case 3, XON is not transmitted when the receive buffer is full.
• In case 6, XOFF is not transmitted when the receive buffer is full
Serial interface connection example.
Notes:
Set the handshaking so that the transmit data can be received.
Transmit data to the printer after turning on the power and initializing the printer.
XON/XOFF transmit timing
Printer status
DIP SW 1-3 status
ON OFF
XON transmission 1) When the printer goes on-line after turning on the power (or
reset using interface)
Transmit Transmit
2) When the receive buffer is released from the buffer full state Transmit Transmit
3) When the printer switches from off-line to on-line — Transmit
4) When the printer recovers from an error using the DLE ENQ 1 or
DLE ENQ 2 commands
—Transmit
XOFF Transmission 5) When the receive buffer becomes full Transmit Transmit
6) When the printer switches from on-line to off-line — Transmit
Host Printer
(DTE ex. 8251)
TXD –––––––––––––––– RXD
DSR –––––––––––––––– DTR
CTS –––––––––––––––– RTS
RXD –––––––––––––––– TXD
DTR –––––––––––––––– DSR
FG –––––––––––––––– FG
SG –––––––––––––––– SG
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