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| Pin | RS232 Mode | RS485 Mode | RS422 Mode |
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| 1 | CD | - | - |
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| 2 | TX | TX/RX+ (A) | TX+ |
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| 3 | RX | - | RX+ |
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| 4 | DTR | - | - |
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| 5 | Common (Isolated Ground) |
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| 6 | DSR | - | RX- |
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| 7 | CTS | TX/RX - (B) | TX- |
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| 8 | RTS | - |
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| 9 | RI (NC) | - | - |
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| Shield |
| Chassis Ground |
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Figure 10: DB9 Port
NOTE: Pins 1, 4, and 6 are connected internally. Pins 7 and 8 are connected internally. No internal termination is provided.
3.1.3 RS232/RS485/RS422 via RJ45
Each port is individually selectable via software to be RS232, RS485 or RS422. The RJ45 port and
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2007 RuggedCom Inc. All rights reserved | Rev100 |
