I have a UDT that reads data from a UDT in a Logix processor (v30). Every tag in the PLC’s UDT is read by Ignition just fine except for one Boolean. It fails in both the tag browser in the designer and the OPC Quick Client on the gateway’s web page. The UDT is used on multiple processor and tags and ALL are failing. I am at a loss as to why. Everything else is working just fine.
I am calling Support tomorrow but thought I would post here just in case… Thanks.
You will need access to the code. If the param is InOut, you can simply point at the real source of that data. If the AOI member has External Access == None, you simply cannot read that member. You should also look at this discussion of AOIs: