RS232 Port Logger Software Our RS232 software allows to capture, log, analyze rs232 data from RS232 ports.
RS232 Port Monitor Software Our RS232 port monitor software allows to capture, analyze and debug rs232 data from RS232 ports. This software can work with ASCII, HEX or binary data

DB25 serial (RS232) port. Pinout and signals for the PC RS232 connector

DB25 pin D-SUB male at the DTE (Computer)
 DB25 pin D-SUB male

Pin Name Direction Description
1
 SHIELD
-
 Shield Ground
2
 TXD
—»
 Transmit Data
3
 RXD
«—
 Receive Data
4
 RTS
—»
 Request to Send
5
 CTS
«—
 Clear to Send
6
 DSR
«—
 Data Set Ready
7
 GND
System Ground
8
 CD
«—
 Carrier Detect
9
 n/c
-
  
10
 n/c
-
  
11
 n/c
-
  
12
 n/c
-
  
13
 n/c
-
  
14
 n/c
-
  
15
 n/c
-
  
16
 n/c
-
  
17
 n/c
-
  
18
 n/c
-
  
19
 n/c
-
  
20
 DTR
—»
 Data Terminal Ready
21
 n/c
-
  
22
 RI
«—
 Ring Indicator
23
 n/c
-
  
24
 n/c
-
  
25
 n/c
-
  
Note: Direction is DTE (Computer) relative DCE (Modem).
Note: Do not connect SHIELD(1) to GND(7).