Writing a LabVIEW program to read an Omega/Newport temperature sensor (CNi3233)

[Karl T.]

Hi,
I need to write a program that reads an Omega CNi3233 temperature sensor.  Omega/Newport provides an ActiveX controller, but I'm not sure how to implement this in LabVIEW.  Has anyone done this or something similar? 

I think I want to read it to a serial connection, which should be the easiest option.  Are there any good tutorial resources on connecting to ActiveX devices?

Thanks,
Karl

[RavensFan]

Take a look at the drivers on www.ni.com/devzone/idnet.  See this link  http://search.ni.com/nisearch/main/p?q=omega+cni

A couple of cni drivers came up there.  Download them and see what they look like.  One of them should work.  Look at the serial communication manual for your device and see what the commands are.  If one of those drivers don't work, you will probably be able to modify it using the info in the manual.

[Karl T.]

Thanks, that looks like it might help.

Karl

[Coal_Man]

Karl,

If the driver doesn't work out and you do want to use the ActiveX controls from Omega, here is a quick primer on using ActiveX in LabVIEW. 

http://zone.ni.com/devzone/cda/tut/p/id/2983

The basis is that you use property nodes to change the data in the ActiveX control and the invoke nodes to call the methods of the ActiveX control. 

As a further note, you can also search for drivers directly from LabVIEW and have them installed for you if you go to Help >> Find Instrument Drivers...  I hope this helps.