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2.8 Making Serial RS-232 Connection

Typical RS-232 Interface DCE Pin Assignment Ta ble

Pin# Signal Name Input/Output
1 Received Line Signal Detect Output
2 TX Data Output
3 RX Data Input
4 DTE Ready Input
5 Signal Ground Output
6 DCE Ready Output
7 Clear To Send Input
8 Request To Send Output
9 Ring Indicator Output