how do you connect to the usb port in the config
having trouble connecting
any help out there?
gary

For Mach3 to communicate with the outside world via USB you would need to use a 'plugin' (http://www.machsupport.com/software/plugins/).

Perhaps if you give us more details of what you are trying to achieve and for what end purpose then we may be of more assistance.

Tweakie.

MY ARDUINO IS PLUGGED INTO ( COM3) ON MY COMPUTER. IN MACH3 CONFIG SETTING HOW OR WHERE DO I PUT THE SETTINGS TO CONNECT TO THAT PORT?

Perhaps do some forum searching to find out more information on using Modbus, this thread may get you started; http://www.machsupport.com/forum/index.php/topic,23759.0.html

also, take a look at the Modbus setup video's here;  http://www.machsupport.com/help-learning/videos-tutorials/

and Peter Homan's pdf here; http://www.homanndesigns.com/pdfs/Using_Modbus_with_Mach3.pdf

Hope this helps and please don’t shout.

Tweakie.