CableCreation CD0486 USB to Female RS-232 Adapter: Difference between revisions
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changed order of pinout columns |
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{| class="wikitable" | {| class="wikitable" | ||
! Pin | ! DE9 Pin | ||
! Function | |||
! Direction | ! Direction | ||
|- | |- | ||
| 1 | | 1 | ||
| DCD | |||
| PC ← device | | PC ← device | ||
|- | |- | ||
| 2 | | 2 | ||
| TXD | |||
| PC → device | | PC → device | ||
|- | |- | ||
| 3 | | 3 | ||
| RXD | |||
| PC ← device | | PC ← device | ||
|- | |- | ||
| 4 | | 4 | ||
| DTR | |||
| PC → device | | PC → device | ||
|- | |- | ||
| 5 | | 5 | ||
| GND | |||
| PC ↔ device | | PC ↔ device | ||
|- | |- | ||
| 6 | | 6 | ||
| DSR | |||
| PC ← device | | PC ← device | ||
|- | |- | ||
| 7 | | 7 | ||
| RTS | |||
| PC → device | | PC → device | ||
|- | |- | ||
| 8 | | 8 | ||
| CTS | |||
| PC ← device | | PC ← device | ||
|- | |- | ||
| 9 | | 9 | ||
| RI | |||
| PC ← device | | PC ← device | ||
| | |- | ||
| (shield) | |||
| shield | |||
| PC ↔ device | |||
|} | |} | ||
Revision as of 07:29, 12 February 2024
Overview
USB to RS-232 with female DE9 plug (male jackscrews) amd a DCE pinout, not normally found on a PC that would typically have a male DE9 DTE pinout. When DCE is needed though, this adapter would make a null modem (crossover) cable unnecessary. If needed a DTE pinout though, you would have to go back to using a null model cable...
Wiring
This USB to RS-232 is configured as a DCE not a DTE, it is expecting to communicate with a DTE.
| DE9 Pin | Function | Direction |
|---|---|---|
| 1 | DCD | PC ← device |
| 2 | TXD | PC → device |
| 3 | RXD | PC ← device |
| 4 | DTR | PC → device |
| 5 | GND | PC ↔ device |
| 6 | DSR | PC ← device |
| 7 | RTS | PC → device |
| 8 | CTS | PC ← device |
| 9 | RI | PC ← device |
| (shield) | shield | PC ↔ device |
For more pin function information, see these Wikipedia pages:
Serial port - Wikipedia (Pinouts section)