![]() ![]() ![]() RS232 V.24 connector DB25 V.24 pinout and signals (ALT A connector) Fig.5. Signal Description Abbr.ĭTE DCE 1 DCE Ready, Ring Indicator DSR/RI «-» 2 Received Line Signal Detector DCD «-» 3 DTE Ready DTR -» «- 4 Signal Ground SG 5 Received Data RxD «-» 6 Transmitted Data TxD -» «- 7 Clear To Send CTS «-» 8 Request To Send RTS -» «- DB25 V.24 pinout and signals Fig.4. RJ-45 RS232 connector RJ45 RS232D connectors (same as telephone connectors) Pin No. Note: The RI pin (#1) sometimes can be used as DSR. It can be used only for nonsynchronous applications onlym because it does not have synchronous clocking signals. X.12 DB15 connector RJ-45 RS232 connector EIA-561 defined RS232 on RJ 45 (modular) connector. Esquema Cabo Serial Db9Ĭomputer Com Port (RS-232/V.24 pin out on a DB-9) Fig.1 RS232/ DB9 Pin Name Description 1 CD Carrier Detect 2 RXD Receive Data 3 TXD Transmit Data 4 Data Terminal Ready 5 GND System Ground 6 DSR Data Set Ready 7 RTS Request to Send 8 CTS Clear to Send 9 RI Ring Indicator X.21 interface on a DB 15 connector Fig.
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