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RS232 DB 9 pin assignment

RS232 DB 9 pin assignment

DB 9 pin assigment

Data carrier detect Data set ready Receive data Request to send Transmit data Clear to send Data terminal ready Ring indicator Signal ground

Protective ground

DB 25 pin assinnment

Protective ground

Transmit data (2) Transmit data Transmitter clock (DCE) Receive data Receive data (2) Reguest to send Receiver clock Clear to send

Data set ready

Request to send (2) Signal ground Data terminal ready Data carrier detect

Signal quality detector Test pin Ring indicator Test pin

Data signal ratę detector

Transmitter clock (DTE) Data carrier detect (2)

Clear to send (2)