Dialog call:Tab Master data > Command group Part > Management. You have marked a part in the tree or list. Select the Safety-related values tab.
- Click
(New) on the toolbar above the Use cases list. - Select an entry in the Use cases list, and click
(Edit).
The usage of a device is known as a so-called "use case". Each use case has its own set of safety-relevant characteristics, the "safety-related values". This means that, depending on how a device is used, differing safety-related values must be used. Differing uses cases may be derived, for example, from the differing use of a device. Thus, for example, a drive can be operated with or without brakes, which in turn means differing safety-related values.
The use cases can be structured in up to five hierarchical levels. There must be at least one hierarchical level. The safety-related values are located at the lowest hierarchical level. If use cases have hierarchical levels with the same designation, this creates a tree-like structure.
Use this dialog to create or edit use cases.
Overview of the main dialog elements:
Store in this field the designation of the use case.
For example, the probability that a device that is operated outdoors in all kinds of weather fails is certainly higher than that of a device that is operated in an air-conditioned room. The use cases of "outdoors in all kinds of weather" and "in an air-conditioned room" are then differing uses cases.
Below the highlighted hierarchy level:
At the same hierarchy level:
These two options will not be available until at least one use case has been defined.
- Select the Below the highlighted hierarchy level option if the new use case is to generate a hierarchy level below the currently highlighted one. (There is a maximum of five hierarchy levels.)
- Select the At the same hierarchy level option if the new use case is to be generated in parallel to the currently highlighted one.
See also