Printronix L5035 User Manual page 254

Appendix C
Overview
RS-422 Serial Interface Connector Pin Assignments
The printer provides a 25-pin DB-25S connector inside the lower
cabinet for connection of a serial interface cable. This connector is
also used for the RS-232 serial interface. Selection of the desired
interface is determined by the position of the RS232/422 switch
located inside the lower cabinet of the printer.
The following table lists the pin assignments of the RS-422
interface connector.
Pin
254
Signal
1 Chassis Ground
2 Transmit Data A (TxDA)
14 Transmit Data B (TxDB)
3 Receive Data A (RxDA)
16 Receive Data B (RxDB)
4 Request To Send A (RTSA)
19 Request To Send B (RTSB)
5 Clear To Send A (CTSA)
13 Clear To Send B (CTSB)
6 Data Set Ready (DSR) / Clock A
22 Clock B
7 Signal Ground
20 Data Terminal Ready A (DTRA)
23 Data Terminal Ready B (DTRB)
Direction
Not applicable
From printer
From printer
To printer
To printer
From printer
From printer
To printer
To printer
To printer
To printer
Not applicable
From printer
From printer