![](/images/new-backgrounds/1192302/192302415x1.webp)
APPENDIX A Cable Pinouts
Table
| Signal |
|
1 | DCD | 1 |
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2 | RXD | 3 |
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3 | TXD | 2 |
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4 | DTR | 6 |
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5 | GND | 5 |
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6 | DSR | 4 |
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7 | RTS | 8 |
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8 | CTS | 7 |
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|
|
9 | RNG | n/ca |
a. n/c=no connect
Table A-4 lists the pinout for the straight-through adapter.
Table
|
|
| Ethernet Signal Name |
1 | DCD | 1 | TX + |
|
|
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2 | RXD | 2 | TX – |
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3 | TXD | 3 | RX + |
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4 | DTR | 4 | n/ca |
5 | GND (signal) | 5 | n/c |
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6 | DSR | 6 | RX – |
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7 | RTS | 7 | n/c |
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8 | CTS | 8 | n/c |
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9 | RNG | n/c | none |
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|
a. n/c=no connect
CT1 and CE1 I/O Modules
CT1 I/O modules have 24