Modular Jack Connector
The following figure and table give the pin locations and descriptions of the 10-position modular jack.
10-Position Modular Jack Pin Locations
10-Position Modular Jack Pin Descriptions
| 10-Position Modular Jack Pin | 232 Signal | 485 Signal |
|---|---|---|
| 10 | DCD* | GND |
| 9 | RXD | CTS+ (HSI+) |
| 8 | TXD | RTS+ (HSO+) |
| 7 | DTR* | RXD+ |
| 6 | GND | RXD– |
| 5 | DSR* | CTS– (HSI–) |
| 4 | RTS | RTS– (HSO–) |
| 3 | CTS | TXD+ |
| 2 | RI* | TXD– |
| 1 | No Connect | No Connect |
* These signals are "No Connect" on the isolated 232 ports.