Xon/Xoff Transmit Timing; Data Format When Using - Epson TM U200D - B/W Dot-matrix Printer Technical Manual

NOTES:
Receive buffer full state differs depending on the printer models. Refer to the Specifications of the printers.
The data received is ignored when the space of the receive buffer is 0 byte.

XON/XOFF Transmit 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 transmit timing differs depending on the settings of the off-line conditions by
the DIP switches. Refer to the specifications of the printers.
XON/XOFF transmit timing
Printer status
XON • When the printer goes on line after turning on the
transmission
• When the receive buffer is released from the buffer
• When the printer switches from off line to on line (*1).
• When the printer recovers from an error through a
XOFF
• When the receive buffer becomes full.
transmission
• When the printer switches from on line to off line (*2).
(*1)XON 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 <11>H and the XOFF code is <13>H.
Data Format When Using RS-485
Transmission data (8 bits, none parity)
START
Appendix A-4
power or reset using interface.
full state.t
command.
3
2
1
RS-485 Communication data format
Off-line status
DIP SW status
ON
Transmission
Transmission
-
-
Transmission
Transmission
4
5
6
OFF
B
Transmission
Transmission
Transmission
Transmission
Transmission
Transmission
STOP
7
8
Rev. B