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%ARC_Unwrite function


Function
The function suppresses writing values of specified object of Historical value type into the archive database and deletes original values.
Declaration
%ARC_Unwrite()

Parameters
None.
Description
If a value of historical value is determined by the function %ARC_Unwrite(), the value will not be written into the archive database and possible value with the same time will be deleted in the database.
Example
 (H.Sinus > 0) ?
 [H.Sinus] : [%ARC_Unwrite()]

 
The example above allows only writing the values which are greater than 0 into the archive database.
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