Appendix A-4
Rev. B
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
(*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)
RS-485 Communication data format
B
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 interface.
Transmission
Transmission
• When the receive buffer is released from the buffer
full state.t
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
1
2
3
4
5
6
7
8
START
STOP
Summary of Contents for TM U200D - B/W Dot-matrix Printer
Page 2: ...technical manual TM U200D U200PD EPSON English 4005680 ...
Page 4: ...EPSON SEIKO EPSON CORPORATION Printed in Japan E9608130 0000SE ...
Page 145: ...Rev B Disassembly Assembly and Adjustment 5 49 TM U200D U200PD Technical Manual ...
Page 146: ...5 50 Disassembly Assembly and Adjustment Rev B ...
Page 147: ...Rev B Disassembly Assembly and Adjustment 5 51 TM U200D U200PD Technical Manual ...
Page 148: ...5 52 Disassembly Assembly and Adjustment Rev B ...
Page 154: ...Appendix A 6 Rev B Main Circuit Board A Parts Layout ...
Page 155: ...Rev B Appendix A 7 TM U200D U200PD Technical Manual Main Circuit Board C Parts Layout ...
Page 156: ...Appendix A 8 Rev B RS 232 Serial Interface Circuit Board Parts Layout ...
Page 169: ...Rev B A 21 TM U200D U200PD Technical Manual Case Unit Lubrication Points Diagram ...