Electronic Documentation Laser 3270 Programmer's Guide
Table Of Contents
- Front Page
- Approvals/Warnings
- Preface
- Important Note
- Related Manuals:
- Table of Contents
- 1. Introduction
- 2. Function Selection via the Line
- 3. Manipulation of Temporary and Permanent Memory Areas
- 4. IBM 3270 Related Functions -Special Settings
- 5. Serial Input
- 6. Printer Sharing
- 7. Printer Initialization by User Strings
- RS 232/V24 Cable Connection (serial support) - Appendix A
- List of Abbreviations - Appendix B
- Index

3270 Programmer’s Guide
Appendix A
- 32 -
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.










