Xerox 3270 manual

3270 Programmer’s Guide Appendix A Appendix A: RS 232/V24 Cable Connection(serial support) Using the serial port The following connections are available in the serial plug: pin 1 pin 2 pin 3 pin 4 pin 5 pin 6 pin 7 pin 8 pin 9 NC RX data TX data DTR GND (Signal) DSR (Busy) RTS (always high) CTS 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: ___ 2For further information, please refer to the technical reference manual for the printer used. - 32 -