RS232 “3 wire serial” connector v1¶
RS232 connector is 2x5 FC-10P 2.54mm dual row IDC socket connector.
RS232 connector and cable orientation¶
Both ends use same pinout, cross over needs to be in the cable. Pins 2, 3, and 5 must be connected.
pin nr |
name |
description |
|---|---|---|
1 |
DCD |
Data carrier detect (optional). |
2 |
RxD |
Received data. |
3 |
TxD |
Transmitted data. |
4 |
DTR |
Data terminal ready (optional). |
5 |
GND |
Signal ground. |
6 |
DSR |
Data set ready (optional). |
7 |
RTS |
Request to send (optional). |
8 |
CTS |
Clear to send (optional). |
9 |
RI |
Ring indicator (optional). |
10 |
NC |
Not connected, used to avoid connecting wrong cable. Box header pin should be cut, and cable plugged for this pin. |
1.8.2021/pekka