Hello,
What version of the IA OPC server do you have? According to the following
link the lookout and the OPC drivers are 32 bits. Now if you want to use this board for communicating to a PLC then when you select the PLC there is an AB parameter called interface where you can select the 1784-PCMK and that should take care of everything. Please check the Help for the AB in the IA OPC server.
I hope this helps. If I didn’t answer the question, please let me know.
Thank you
Ricardo S.
National Instruments