|
|
DB9 serial (RS232) port. Pinout and signals for the PC RS232 connector
| Pin |
Name |
Direction |
Description |
1 |
CD |
«— |
Carrier Detect |
2 |
RXD |
«— |
Receive Data |
3 |
TXD |
—» |
Transmit Data |
4 |
DTR |
—» |
Data Terminal Ready |
5 |
GND |
|
System Ground |
6 |
DSR |
«— |
Data Set Ready |
7 |
RTS |
—» |
Request to Send |
8 |
CTS |
«— |
Clear to Send |
9 |
RI |
«— |
Ring Indicator |
Note: Direction is DTE (Computer) relative DCE (Modem).
|
