Hi,
If your device supports Modbus, then you can use Industrial Automation OPC Server to interchange information between the device and LabVIEW. Here's the links you might want to check.
http://sine.ni.com/apps/we/nioc.vp?cid=11127〈=US
http://www.ni.com/opc/opcservers.htm
Regards,
Remzi A.