Allows you to create a flexible plant hierarchy according to the number of levels required by your plant structure. The minimum allowed number of levels is three, as in the default plant, which is supplied with Smart Instrumentation (displayed as DEFAULT in the Plant Hierarchy Explorer). The System Administrator has right to enable or disable the use of the default plant when definition of modifying domain settings in the Domain Definition window.
You can create or delete plant hierarchy items within the hierarchy levels that you define in the Plant Hierarchy dialog box. For example, on the Unit level, it is possible to create several items such as Unit1, Unit2, Unit3, and so forth. Also, you can edit the properties of the plant hierarchy items as you require.
After creating a first <plant>, you cannot change the plant hierarchy levels that you defined in the Plant Hierarchy dialog box. Therefore, it is recommended that prior to defining plant hierarchy items in the Plant Hierarchy Explorer, you create all the plant hierarchy levels that you require. If you need to change the plant hierarchy levels after defining <plants>, you must first delete all the <plants>. To delete a plant, you first have to delete all the plant's <units>. A <unit> is deleted by using the right-click option in the Plant Hierarchy Explorer.
You can change the names of the plant hierarchy items at any stage of your domain life cycle.
You can only change the number of the plant hierarchy items before creating a naming conventions for a Smart Instrumentation item.
The names of plant hierarchy items must be unique within a particular node of the parent level.
— Indicates the plant hierarchy root. Below this level, you can create highest level items.
— Indicates the highest level items in the plant hierarchy. The default highest level name is Plant. On this level, you can edit properties or delete highest level items. Below this level, you can create intermediate levels items.
— Indicates intermediate levels items in the plant hierarchy. The default intermediate level name is Area. You can have more than one intermediate level, depending on your level definitions you made in the Plant Hierarchy dialog box. On this level, you can edit properties or delete intermediate levels items. Below the lowest intermediate level, you can create lowest levels items.
— Indicates the lowest level items in the plant hierarchy. The default lowest level name is Unit. On this level, you can edit properties or delete lowest level items.
Shortcut Menu Commands
All the commands in the Plant Hierarchy Explorer are accessible only from the shortcut (right-click) menu. The shortcut menu commands that are disabled are available only in the Smart Instrumentation environment.
New — Allows you to create a new plant hierarchy unit below the currently selected item. In the Properties dialog box that opens, you can either create an empty item or define the new item properties, and then create the item.
Properties — Allows you edit properties of the selected item using the options of the Properties dialog box.
Delete — Deletes the selected item. Deletion of a <unit> requires unique access in the domain. You cannot delete a <unit> if anyone else is using the domain, and no one can enter the domain after the deletion process has started.
Since deletion of a <unit> is irreversible, make a backup before you delete a <unit>.
You cannot delete the DEFAULT plant, area, and unit. The System Administrator, however, when setting the domain features in the Domain Definition window, can enable or disable the use of the default plant. If your plant hierarchy has more than three levels, the software automatically disables the use of the default plant, and removes the plant DEFAULT from the Plant Hierarchy Explorer.