A-6 Series 90-30 PLC Installation and Hardware Manual
–
August 2002 GFK-0356Q
A
Table A-4. IBM-AT/XT Serial Port Pins-out
IB
M-
AT
Pin
No.
Signal Description
IBM-XT
Pin No. Signal Description
1 DCD Data Carrier Detect 1 NC
2 RD Receive Data 2 TD Transmit Data
3 TD Transmit Data 3 RD Receive Data
4 DTR Data Terminal Ready 4 RTS Request to Send
5 GND Signal Ground 5 CTS Clear to Send
6NC 6 NC
7 RTS Request to Send 7 GND Signal Ground
8 CTS Clear to Send 8 DCD Data Carrier Detect
9 NC 9 DTR Data Terminal Ready
NC = Not Connected
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