Advanced Serial Port Monitor
Data Logger Suite
Advanced Serial Data Logger
Advanced TCP/IP Data Logger
Advanced NMEA Data Logger
GPS Tracker Data Logger
Serial Printer Logger
Advanced OPC Data Logger
OPC Scada Viewer
Advanced PBX Data Logger
SNMP Data Logger
Data logger ActiveX
Advanced USB Port Monitor
USB HID Logger
Virtual Null Modem
TCP COM Bridge
CNC Syntax Editor
DNC Precision
Accurate Printer Monitor
COM Port Data Emulator
COM Port Stress Test
Log Monitor & Export
Our newsletters

Now you can receive AGG Software newsletters, plus the latest technical information, via Email. Your Email address will be kept confidential. Please, read our Privacy Policy.

Your Email:

DB9 pinout and signals for the PC RS232 connector (serial and RS232 ports)

DB9 pin D-SUB male

DB9 pin D-SUB male

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).

RS232 pinout and signals
Serial port pinout and signals
Full DB25 serial (RS232) port pinout and signals
DB25 pinout and signals