The best place to start is with the
driver available for the instrument. Download the one for your version of LabVIEW. There is an example called HP34970A Advanced Scan Example that configures channels for either voltage or resistance but you would replace both of those with a HP34970A Conf Temperature function. The example takes 1 scan and once you have gotten that to work, it's pretty simple to modify it so that it will scan continuously.