Walkthrough of Configuring DCOM for OPC Interfaces
Provide background of DCOM, walkthrough of DCOM configuration, and pitfalls for common networking configurations.
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Dustin Nest
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Kenneth Barber
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It would probably be better to upgrade the data source to a version that has or supports an OPC UA server and then use the PI Connector For OPC UA or the PI Adapter For OPC UA. OPC UA is cross-platform, is more secure than OPC DA, and is the successor to OPC DA.
Then again, the PI Interface For OPC DA has better redundancy than the PI Connector For OPC UA or the PI Adapter For OPC UA.
OSIsoft has documentation about configuring DCOM here:
https://docs.osisoft.com/bundle/dcom-security-and-configuration/page/dcom-security-and-configuration.html