RS-422
211
Receive Data (RD)
.
Serial data stream to the printer.
Clear To Send (CTS)
.
Status signal to the printer indicating the host is ready
to receive data/status signals from the printer.
Data Set Ready (DSR)
.
Status signal to the printer indicating the host is in a
ready condition.
Data Carrier Detect (DCD)
.
Status signal to the printer. The ON condition is
required for the printer to receive data.
Transmit Data (TD)
. Serial data stream from the printer for transmitting status
and control information to the host. Subject to protocol selection.
Request To Send (RTS)
.
Control signal from the printer. Subject to
configuration.
Data Terminal Ready (DTR)
.
Control signal from the printer. Subject to
configuration.
RS-422
+RD, -RD
.Serial data stream differentially received by printer.
+TD, -TD
.Differentially driven serial data stream for transmitting status and
control information to the host. Subject to protocol selection.
NOTE:
±
RD
and
±
TD
form signal and return paths of a differential line signal.
RS-232 Serial Interface Protocols
DTR
. (DTE Ready). The printer controls the data flow by asserting or de-
asserting this hardware signal to the host. If there is enough room in the
printer buffer, the printer will send a high signal; if the buffer is full the printer
will send a low signal. DTR tells the host if it is safe to send more data (If the
host sends data during an unsafe condition, data will be lost.
Table 6. RS-422 Serial Interface Connector Pin Assignments
Input Signals
Output Signals
Miscellaneous
Signal
Pin
Signal
Pin
Signal
Pin
- Receive Data
(-RD)
15
- Transmit Data
(-TD)
19
Chassis Ground
1
+ Receive Data
(+RD)
17
+ Transmit Data
(+TD)
25
Signal Ground
7
Содержание 6400 Series
Страница 2: ......
Страница 3: ...6400 Line Matrix Printers S544 5640 01 Setup Guide Cabinet and Pedestal Models...
Страница 18: ...xviii Safety Notices...
Страница 86: ...86 Chapter 2 Test The Printer...
Страница 208: ...208 Chapter 4 RibbonMinder Menu...
Страница 224: ...224 Chapter 5 IEEE 1284 Parallel Interface...
Страница 234: ...234 Chapter 6 Hex Code Printout Figure 70 Sample ASCII Hex Code Printout Figure 71 Sample Code Hex Code Printout...
Страница 262: ...262 Appendix B Printing Speed...
Страница 268: ...268 Appendix C Compatibility and Limitations...
Страница 286: ...286 Appendix D Physical and Logical Unit Types...
Страница 315: ......
Страница 316: ...Copyright IBM Corp 1998 2002 174585 001A S544 5640 01 54P0515...