User`s guide

Appendix A
IBM PC DTR Cable Pinouts
The following tables show the suggested cable pinouts for the IBM
PC/XT and IBM PC/AT or compatible computers. We recommend
that you use a DTR cable so you can use the default DTR/DSR flow
control. With a typical RS-232C cable, you can use only
XON/XOFF flow control.
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Plnouts: Printer IBM PC/XT
IBM PC/XT
DB-25 S DB-25 P
1
:
:
2
4 5
5
4
20 T 6+8
6+8
20
7 7
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A-2 Cable Pinouts