串行直连电缆 25针-25针(NullModem)


串行直连电缆用于两台计算机的直接相连,电缆两端的插头都是 25 针母插头:

25 PIN D-SUB FEMALE

引脚定义


 

D-Sub 1

D-Sub 2

 

Receive Data

3

2

Transmit Data

Transmit Data

2

3

Receive Data

Data Terminal Ready

20

6+8

Data Set Ready + Carrier Detect

System Ground

7

7

System Ground

Data Set Ready + Carrier Detect

6+8

20

Data Terminal Ready

Request to Send

4

5

Clear to Send

Clear to Send

5

4

Request to Send


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