DeltaV Continuous Historian licenses must be assigned to a DeltaV Application Station.
The Application Station software suite includes a 250-parameter base license that can be configured for the DeltaV Continuous Historian. The number of licensed parameters assigned to an Application Station can be increased with DeltaV Continuous Historian or Legacy Historian Scale-up licenses, or a combination both.
If you are migrating from the Legacy Historian to the DeltaV Continuous Historian, previously assigned Legacy Historian licenses can be used for the DeltaV Continuous Historian. The DeltaV Continuous Historian can be licensed and configured for up to a maximum total of 30,250 parameters per Application Station, including the 250-parameter base license, plus any additional Legacy Historian and DeltaV Continuous Historian Scale-up licenses.
When the Continuous Historian subsystem is downloaded, DeltaV checks the configuration database to validate the total configured historian parameters. The Continuous Historian subsystem download is disallowed if the total configured historian parameters exceed the number of DeltaV Continuous Historian licenses, including the Application Station base license amount and all Scale-up licenses.