beautypg.com

Configuring the host computer port – Siemens SIMATIC TIWAY 1 User Manual

Page 63

background image

CONFIGURING THE HOST COMPUTER PORT

UNILINK HOST ADAPTER

3–5

USER MANUAL

The IBM PC/AT

r uses a 9-pin “D” connector for its serial interface port. A null

modem cable diagram for the IBM PC/AT port is shown in Figure 3–5.

6

1

9

5

14

25

1

13

GND

DTR
SD

RD

DCD

RI

CTS

RTS

DSR

TxD

RxD

RTS

CTS

DSR

GND

DCD

IBM PC/AT 9–Pin

UNILINK Host Adapter 25–Pin

Figure 3–5

IBM PC/AT 9-Pin Null Modem Cable Diagram