Hi,
If you are using six different devices and each of them is in a different COM port, then, just like Eric_V mentioned, you can use VISA read/write commands to talk to your sensor. The only thing you have to do is to specify a different VISA resource COM 1,2,3 etc... for each sensor.
Also, what do you mean by the six devices conflicting with each other? Can you be a little more specific?
Regards,
Eli S.
National Instruments
Applications Engineer