Sorry, still not clear. ):
I'm about as deep as I'm willing to go for free.
From what little I can deduce, all of my likely recommendations would involve PLC code changes/additions, and would involve my alternate driver. Which you cannot get on Edge.
Most certainly misunderstood what he said. Either way, I found that they use 4k tags per part they track. I was able to eliminate 14 parts, so I was able to eliminate 64K tags right there so that should hopefully speed things up substantially. The current cycle step and part inventory is the only thing that changes constantly, and the operator really has no interaction with the HMI. No historians, and all of the scan groups are all set at 1000 ms apart from the leased group. As for the UDTs there are over 400 of similar size all nested within each other to some extent but we are really only using about half.
I think my next question then would be do you need all 4k tags for each part? If so, do they all need to be scanning at 1 second? If so, this may need to be split into multiple PLCs to handle the comm load, or move over to standard edition and get Phil's driver to consolidate PLC comms.