Using an Elo Touch Screen with LabView Real Time

[mlwarren]

Has anyone used an Elo Touch Screen with LabView Real Time?  The touch screen that we want to use interfaces using usb to the PXI host. (PXI-8195 running LabView Real Time)  I have search around and can not find any information on weather the Real Time module will support the usb controlled touch screen or not.

If we are unable to use the Elo Touch Screen, what other options are available for a touch screen HMI?

Thanks

Matt

[Eric A.]

Hi Matt,
Thanks for contacting National Instruments.  Your question is more sophisticated than it seems at first glance.  I apologize if this is review for you but I will cover the basics of how the LabVIEW module works before I answer your question.  There are a couple of different ways to create a user interface for your Real-Time PXI system.  LabVIEW is used to develop an application on a "host" computer that is connected to the  RT PXI system over ethernet.  Once the application is complete it can be deployed to the RT system.  You can keep the VIs front panel open and the RT PXI will send information from the PXI controller to the host PC to update the front panel.  This is an inefficient way to have a user interface.  The best and most common way is to have a separate VI running on the host computer that communicates to the PXI controller using TCP or Shared Variables.  Please check out this link that shows how HMI can be added to a PAC because the interfaces work the same way.  You can use a touch screen but you have to have a separate system running the user interface on the touch screen.