Equipment
Equipment
:
Equipment Spatial Associations
: Configure the System
Configure the System
There are three project set up considerations for this utility, these are administration functions:
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Load Equipment Association Definitions
•
Management of Stored Associations
•
Add Association Features to Equipment
.
Load Equipment Association Definitions
Load Equipment Association Definitions relies on a standard set of Association Definitions being loaded into the project. These are supplied as part of the standard Master project in Association World /AVEVA-Std-Association-Definitions, which includes the following Association Definitions:
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/AV-STDMATE
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/AV-STDALIGN
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/AV-STDPARALLEL
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/AV-STDPARALLELOFFSET
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/AV-STDDISTANCE
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/AV-STDHORIZDIST
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/AV-STDABOVELINE
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/AV-STDELEVATION
Normal users require only read access to these definitions, so it is recommended that a database containing these definitions is placed in a common master project with other company standard data, this is an administrator function.
Management of Stored Associations
Each geometrical constraint is stored as an Association element. Association elements are stored in a DESI database under a world element of type Association World (ASSOWL). Each Association world can contain any number of Association Group elements (ASSOGP), which in turn contain Association elements (ASSOC).
Associations created by this utility are placed in Association Groups with the PURPOSE attribute set to ASEQ. Every time that an Association is created by this utility, the system searches for the first Association Group element that it can find with PURPOSE set to ASEQ. If the first group found cannot be written to by the user, the system searches for the next Association Group, until an ASSOGP is found where the user can create an Association. The storage Associations can be managed in several ways:
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All Associations generated by this utility are put into one group - only recommended if there is a small number of Associations of this type.
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Association Groups are locked to prevent any more Associations from being created in that location and new Association Groups are created to collect the next batch of Associations.
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Use Data Access Control to open certain Association Group elements for write access to certain users or groups of users.
1974 to current year.
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