
2 Operating A&D DataManagement 07/2011
2.7 Comparison functions
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2-124 SIMATIC A&D DataManagement Client - 07/2011
2.7 Comparison functions
General
The comparison functions can be used to compare the data stored in ADDM with
the online data. As the components may also contain data, which changes
frequently, a special Exclusion list function is implemented in ADDM for some
components. Data, which is not relevant for the comparison, may be put in the
exclusion lists. This makes a meaningful comparison possible and ensures easy
updating of the databases.
Multibackup
As well as the backed up source data, there is an option to create backups for most
components. These multibackups are stored in the data structure of ADDM, and
can be reloaded later to make a recovery. In order to be able to update these data,
a comparison can also be made for these data.
Select comparison partner
As the data of a component may be multiply stored in ADDM, the data for
comparison has to be selected. Click on the Comparison button and ADDM opens
the following dialog.
The list box enables the data to be selected for each comparison partner:
• "Online data" are data, which are stored in the destination hardware. To
make a comparison, ADDM reads the data out of the hardware and
compares them.
• "Source data" are frequently a component"s configuration data, e.g. S7
projects. These data are usually linked to the ADDM component by
pointers. ADDM uses the first back up of a component as source data, and
this is used as a reference for the comparisons.
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