在硬件手册上找到答案了,转到接头上还要换一下顺序
(at the Computer)
9 PIN D-SUB MALE at the Computer.
Pin Name RS232 V.24 Dir Description
1 CD CF 109 Carrier Detect
2 RXD BB 104 Receive Data
3 TXD BA 103 Transmit Data
4 DTR CD 108.2 Data Terminal Ready
5 GND AB 102 System Ground
6 DSR CC 107 Data Set Ready
7 RTS CA 105 Request to Send
8 CTS CB 106 Clear to Send
9 RI CE 125 Ring Indicator
Note: Direction is DTE (Computer) relative DCE (Modem).
Note: RS232 column is RS232 circuit name.
Note: V.24 column is ITU-TSS V.24 circuit name.
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