Printronix P7000 Manual De Usuario

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Chapter
5
RS-232 And RS-422 Serial Interfaces
Receive Data (RD). Serial data stream to the printer.
Transmit Status & Control 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.
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.
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.
Table 10. PSA3 RS-422 Serial Interface Connector Pin Assignments
Input Signals
Output Signals
Miscellaneous
Signal
Pin
Signal
Pin
Signal
Pin
- Receive Data 
(-RD)
1
-  Transmit  Data 
(-TD)
3
Chassis/Signal 
Ground
5
+ Receive Data 
(+RD)
6
+ Transmit Data 
(+TD)
8