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Nullmodem Cable Pinout - AllPinouts

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This adapter will enable you to use a normal serialcable as a nullmodem.

25 PIN D-SUB FEMALE to the Computer

25 PIN D-SUB MALE to the Serialcable.

Female Male
Shield Ground 1 1 Shield Ground
Transmit Data 2 3 Receive Data
Receive Data 3 2 Transmit Data
Request to Send 4 5 Clear to Send
Clear to Send 5 4 Request to Send
Data Set Ready 6 20 Data Terminal Ready
Data Terminal Ready 20 6 Data Set Ready
Ground 7 7 Ground


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