Hi Vishnu.R,
Please test again by following the below instruction.
1. Install the Labview, NI-FBUS configurator software.
2. Connect your hardware by following the below screenshot.
3, NI provides some examples of how to communicate with the device using labview. After installing the NI fubs configurator, you are able to find the example in the path:..\National Instruments\LabVIEW 2018\examples\NI-FBUS\Interface Device.
Thanks!