Hello Jandy,
I'm sorry but this group is devoted to the use of SAPHIR toolkits --> http://www.saphir.fr/en/accueil.html
We currently sell and support a modbus driver that we encourage you to evaluate to communicate in Modbus.
Your question seems to be about another toolkit.
If I can be of any assistance to use our GModbus for LabVIEW toolkit, I'll be happy to help.
Regards,
Olivier