![](/images/new-backgrounds/1109524/109524145x1.webp)
2-wire RS-485
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Signal | 0 | 1 | 2 | 3 | 4 |
| 5 | 6 | 7 |
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Data+(B) | 1 | 25 | 6 | 30 | 33 |
| 14 | 38 | 41 |
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2 | 26 | 7 | 31 | 34 |
| 15 | 39 | 42 | |
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GND |
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| 32, 40, 45, 50, 55, 58 |
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Device Side Pin Assignments
Male DB9 (Opt8-D/Opt8-M9)
15
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| 6 | 9 |
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Pin | |||||||
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1 | DCD | ||||||
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2 | RxD | TxD+(B) | |||||
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3 | TxD | RxD+(B) | Data+(B) | ||||
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4 | DTR | ||||||
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5 | GND |
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| GND | GND | ||
6 | DSR |
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7 | RTS |
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8 | CTS |
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9 |
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