1-18
Features and General Specifications
Rev.B
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.
RS-485 Serial Interface (option)
Refer to the Appendix for details.
IEEE 1284 Parallel Interface
Copyright (C) 1994 by the Institute of electrical and Electronic Engineers, Inc.
Specification
Data transmission:
8-bit parallel
Synchronization:
Externally supplied nStrobe signals
Handshaking:
nAck and Busy signals
Signal levels:
TTL compatible
Connector:
57RE-40360-830B (DDK) or equivalent (IEEE 1284 Type B)
Reverse communication (Printer Host):
Nibble or Byte Mode
Reverse Mode (Data Transmission from Printer to Host)
The STATUS data transmission from the printer to the host is proceeded in the Nibble or Byte
mode.
This mode allows data transmission from the asynchronous printer under the control of the
host.
Data transmissions in the Nibble Mode are made via the existing control lines in unists of four
bits (Nibble). In the Byte Mode, data transmissions are proceeded by making the eight-bit data
lines bidirectional.
Host
Printer
TXD
DSR
CTS
RXD
DTR
FG
SG
RXD
DTR
RTS
TXD
DSR
FG
SG
Содержание TM U200D - B/W Dot-matrix Printer
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Страница 154: ...Appendix A 6 Rev B Main Circuit Board A Parts Layout ...
Страница 155: ...Rev B Appendix A 7 TM U200D U200PD Technical Manual Main Circuit Board C Parts Layout ...
Страница 156: ...Appendix A 8 Rev B RS 232 Serial Interface Circuit Board Parts Layout ...
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