Can we use Mach3 to send some commands to USB Port (COM Port).. I want to control my David Laser scanner that accept command from COM Port..Is their a way that when I Push Start button in Mach3 to Run my Gcode some command can be immediatly send to start the David Via COM.. Any third party software that can communicate the Mach3 with USB...

Thanks

You will need to write a plugin to do that.
Hood

Thanks Hood for your support.. I seldom come in this forum and i always see you are helping us:)
I don't know how to write plug-in but if you have in mind anywhere similar in this forum can you guide me... i just want to Press the Start button along with a Command to USB port..

Look in the PlugIn section of the forum and it might give you some ideas of how to do it, you will find it here http://www.machsupport.com/forum/index.php/board,28.0.html
Afraid I know nothing about them so can't be much help
Hood