Figure 23 shows the location of the pins on the DB-9 female connector.
Figure 23: DB-9 Female Connector
Table 12 provides the DB-9 connector pinouts.
Table 12: DB-9 Connector Pinouts
Pin | Name | I/O | Description |
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1 | DCD | I | Carrier Detect |
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2 | RxD | I | Receive Data |
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3 | TxD | O | Transmit Data |
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4 | DTR | O | Data Terminal Ready |
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5 | GND | N/A | Signal Ground |
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6 | DSR | I | Data Set Ready |
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7 | RTS | O | Request To Send |
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8 | CTS | I | Clear To Send |
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9 | RING | I | Ring Indicator |
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Connectors 61
