APPENDIX A. CONNECTOR PIN DEFINITIONS
The following tables provide the pin assignments for the base unit, interface modules, and backup modules.
Base Unit Pinouts
TablePin | Name | Description |
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1 | — | Unused |
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2 | RD | Receive Data (input) |
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3 | TD | Transmit Data (output) |
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4 | DTR | Data Terminal Ready (output) |
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5 | SG | Signal Ground |
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6 | DSR | Data Set Ready (input) |
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7 | RTS | Request to Send (output) |
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8 | CTS | Clear to Send |
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9 | — | Unused |
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Note | Direct connection to an external modem requires a | ||
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Pin | Name | Description |
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1 | TX1 | Transmit Positive |
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2 | TX2 | Transmit Negative |
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3 | RX1 | Receive Positive |
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4, 5 | — | Unused |
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6 | RX2 | Receive Negative |
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7, 8 | — | Unused |
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Copyright 2006 | 43 |