Use Use of the function is meaningful
only for
both historical values evaluated periodically (archiving method
Periodical) and historical values evaluated on change (archiving method On value change). If a value of such
a historical value is determined by the
function function %ARC_Nowrite(), the value will not be written into the archive database
, and the
function will leave original value
will be left without a change.
For historical values evaluated on change (archiving method
On value change), the function behaves like the
the function function %ARC_Unwrite.