800xA History License Components
I am in the middle of ordering an 800xA history license and I'm unsure what one of the components is for. I do require '800xA History Signals - Basic 100 signals', however I do not know what 'Data Access to 800xA History Signals' is or whether it is required.
Any help would be appreciated.
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Found this in the 800xA history manual:
There are two types of licenses:
1.800xA History Signals -Logs: History signals capable of storing actual and historic values retrieved from 800xA, Heritage ABB DCS systems and OPC sources. The signals include logging, trending, calculations and archiving.
2.External Data Access to 800xA History Signals: External access to history data through OPC and ODBC connectivity. This gives access to both, the current and the historical data.