Xerox 3270 - Manual (Page 32)

3270 Programmer’s Guide
Appendix A
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Appendix A: RS 232/V24 Cable
Connection
(serial support)
Using the serial port
The following connections are available in the serial plug:
pin 1 NC
pin 2 RX data
pin 3 TX data
pin 4 DTR
pin 5 GND (Signal)
pin 6 DSR (Busy)
pin 7 RTS (always high)
pin 8 CTS
pin 9 N.C.
Example: Cable connections to HP LaserJet III:
converter
HP LaserJet III
Cable type: DB9 male Cable type: DB25 male
pin 2: __________________________________ pin 2
pin 3: __________________________________ pin 3
pin 4: _________________________________ pin 7
pin 5: _

________________________________ pin 20
pin 6: _

pin 7:
If the attached printer supports X_ON/X_OFF, you should use the
following protocol for the simplest setup.
You only require the following cable:
converter Printer 2
Cable type: DB9 male Cable type: dB25 male
pin 2: __________________________________ pin 2
pin 3: __________________________________ pin 3
pin 5: __________________________________ pin 7
pin 6: ___
pin 7: ___

2 For further information, please refer to the technical reference manual for the printer used.