Hi Saravanakumar
I face similar case before with HIMA ESD and ABB AC800F.
what I suggest is install ignition with only OPC DA module on the same computer as EXAOPC and send your data to main IGNITION server with either remote tag gateway or OPC UA.
Because EXAOPC install on windows you should use ignition 7 32 bit.
OPC DA is hard to work with remote network and specially old system so install minimum ignition platform with OPC DA on same machine is very good choose here.
You need pay only for OPC DA (400$) module which is much cheaper compare to kepware.
OPC UA is free.
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