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