User`s guide

5 Requirements Links Maintenance

5-20

Copy Library Blocks with Requirements

When you copy a library subsystem or masked block to a model, you can highlight, view

and navigate requirements links on the library block and on objects inside the library

block. However, those links are not associated with that model. The links are stored with

the library, not with the model.

You cannot add, modify, or delete requirements links on the library block from the

context of the reference block. If you disable the link from the reference block to the

library block, you can modify requirements on objects that are inside library blocks just

as you can for other block attributes when a library link has been disabled.

Manage Requirements on Reference Blocks

You use the RMI to manage requirements links on a reference block just like any other

model object. You can view and navigate both local and library requirements on a

reference block.

For example, in the following graphic, right-clicking the reference block shows that the

reference block has locally created requirements links and requirements links on the

library block:

• Locally created requirements links — Can be modified or deleted without changing

the library block:

• Manifold absolute pressure sensor

• Mass airflow estimation

• Requirements links on the library block — Cannot be modified or deleted from the

context of the reference block:

• Speed sensor

• Throttle sensor

• Oxygen sensor