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Serial interface
NOTE: In the table below, “I/O” denotes the input/output
when seen from the server.
.
After converting cable
Pin number Signal name Meaning I/O
1 DTR Data Terminal Ready
2 DSR Data Set Ready I
3 TXD Transmit Data O
4 RTS Request To Send O
5 RXD Receive Data I
6 CTS Clear To Send I
7 CD Receive Carrier Detect I
8 CI Call Indicator I
Shield GND Signal Ground
Pin number Signal name Meaning I/O
1 CD Receive Carrier Detect I
2 RXD Receive Data I
3 TXD Transmit Data O
4 DTR Data Terminal Ready
5 GND Signal Ground
6 DSR Data Set Ready I
6
4
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