Rs–422 – Printronix Series 5 User Manual
Page 192
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5–17
Interfaces
Table 5–6. 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
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.
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