Suna,
The configuration of the FP-TC-J dual thermocouple is done the same way in FP-explorer as any other dual input channel module.
Under the com ressource, right click on FP-TB-10 and select edit this device in FP Explorer. Then, select the type of module(i.e. TC-J) from the drop down on the right for the channel the dual module is in place.
If you have already done that, you may send a support request to National Instruments and explain in details what doesn't work with the configuration (wrong readings, doesn't find the module, error message...)
Regards,
Cyril Bouton
Industrial Automation
National Instruments
Cyril Bouton
Active LabVIEW Developper