Open the comm tester form that you downloaded. Create a command button and call it LIST PORTS. In the CLICK event put this code:
* Launch Device Manager Form to see all ports and devices on computer
Local lcOpen
Declare Integer ShellExecute In shell32.Dll ;
INTEGER hndWin, String cAction, String cFileName, ;
STRING cParams, String cDir, Integer nShowWin
lcOpen = "devmgmt.msc"
ShellExecute(0,"open",lcOpen,"","",1)
Click on PORTS - COMM AND LPT
Make sure Comm 4 exists.
What is your connection code for RThreshold?
Don