PortStat Utility - (295 KB executable file)
Windows program that monitors and sets the status of any of the handshaking lines on a COM port. PortStat can be used to turn switches on and off under program control or can be used to monitor the voltage on any of the handshaking lines in a serial port. For example you could use PortStat to force another application, like Excel, to run a macro when the voltage on a serial port line changes state. You could also use it to turn a switch on or off directly from within Excel, Access or any other program that supports Dynamic Data Exchange (DDE)