History files are only created and rolled
over at the appropriate time if the device is opened in Logging
mode. Generally, the system takes care of which mode to open a
device in, but there are some instances where the system will chose
an inappropriate open mode. To rectify this, from 3.4/4.2 Service
Pack E and 5.1, the system will now always open a History device in
Logging mode.
A new parameter has been added which will override this. By
setting the following parameter to 0, the system will revert to the
old behaviour.
[Device]
ForceHistoryOpenMode=0
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