Printronix SL5000E series User Manual page 306

Chapter 4
RS-232 And RS-422 Serial Interfaces
RS-232
Table 14. RS-232 Serial Interface Connector Pin Assignments
Input Signals
Signal
Receive Data (RD)
Clear To Send (CTS)
Data Set Ready (DSR)
Data Carrier Detect (DCD)
Received Data (RD). Serial data stream to the printer.
Transmitted 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
Table 15. RS-422 Serial Interface Connector Pin Assignments
Input Signals
Signal Pin
- Receive Data (-RD) 15
+ Receive Data (+RD) 17
+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:
306
Output Signals
Pin Signal
3 Transmit Data (TD)
5 Request To Send (RTS)
6 Data Terminal Ready (DTR)
8
Output Signals
Signal
- Transmit Data (-TD)
+ Transmit Data (+TD)
± ±
RD and TD form signal and return paths of a differential line signal.
Miscellaneous
Pin Signal
2 Chassis Ground
4 Signal Ground
20
Miscellaneous
Pin Signal
19 Chassis Ground
25 Signal Ground
Pin
1
7
Pin
1
7