Preserve history data while change type
Hi,
is it possible to preserve the history data if, lets say, while changing a SignalInReal to SignalReal.
800xA 5.1 + IM
Best Regards
Andreas
Answers
Even if Control Builder M allow changing type the actual action taking place in System 800xA is ”Delete old & create new”. Hint: look at the creation date of the transmuted object.
Logs will be disposed of when CBM deletes the old object.
The Log Configuration aspect allow export and import of data to/from .CSV files. Unfortunately, you cannot export all at once, only a couple of hundred thousand rows at a time.
I observed, that the log will not be disposed in all cases. If the old and the new type have the same property (e.g.Out) the log wil be preserved and keep updated. But it will not be displayed in the trend display. Maybe since the log has no longer an Aspect property.
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