RS232 w/DB25 Cable Pinout


DB-25 Male Connector

RS232 DB-25
PIN
FUNCTION
DESCRIPTION
1
GND
Chassis / Frame Ground
2
TX
Transmit
3
RX
Receive
4
RTS
Request To Send
5
CTS
Clear To Send
6
DSR
Data Set Ready
7
GND
Signal Ground
8
DCD
Data Carrier Detect
9
TD+
Transmit Data +
10
N/C
No Connection
11
TD-
Transmit Data -
12
N/C
No Connection
13
N/C
No Connection
14
N/C
No Connection
15
N/C
No Connection
16
N/C
No Connection
17
N/C
No Connection
18
RD+
Receive Data +
19
N/C
No Connection
20
DTR
Data Terminal Ready
21
N/C
No Connection
22
RI
Ring Indicator
23
DSRD
Data Signal Rate Detection
24
N/C
No Connection
25
RD-
Receive Data -