First you need to create MitsubishiFX object in IA OPC Server. Make sure that the configuration is correct.
One thing I'm not sure is that this object is based on FX-24MR, not 32MR. I'm not sure if it's compatible. If the protocol is completely same, I think it's ok.
After you create the object, you should not see any alarm messages.
Then, you will be able to use Datasocket in LabVIEW or LabVIEW DSC module to communicate with this OPC Server.
Ryan Shi
National Instruments