Disable or Break Links to Library Blocks

模型包括添加或结构性变化deletion of blocks or adding ports while non-structural changes include changes in parameter value.

A linked block does not allow structural changes to it. You can disable the link of a linked block from its parent library block and perform required modifications. A disabled linked block behaves like a local instance of a block and allows you to make structural and nonstructural changes.

To disable a link, right-click the linked block and, on the context menu, clickLibrary Link>Disable Link. Alternatively, select the linked block and clickDiagram>Library Link>Disable Link

To prevent unintentional disabling of a linked block, you can lock its links to the library. To lock a link, on the library window, clickDiagram>Lock Links To Library. You can later choose to unlock the locked link by selectingDiagram>Unlock Links To Libraryon the library window.

Note

万博1manbetx^®offers to disable the library links (unless the link is locked) when you try to make structural changes to a block that contains active library links.

Do not useset_paramto make structural changes to an active link. The result of this type of change is undefined.

A disabled link of a linked block can be restored. For more information, seeRestore Disabled or Parameterized Links.

Break Links

You can permanently break links to the parent library. Before you break a library link, the link must first be disabled. When you break a link, the linked block is converted to a standalone block.

To break a link, use any of these options:

For disabled links, right-click the linked block and, in the context menu, selectLibrary Link>Break Link.
To copy and break links to multiple blocks simultaneously, select multiple blocks and then drag. The locked links are ignored and not broken.
When you save the model, you can break links by supplying arguments to thesave_systemcommand. For more information, seesave_system.

Note

Some models can contain blocks from third-party libraries or optional Simulink block sets. Breaking the link for such models does not guarantee that you can run the model standalone. It is possible that a library block invokes functions supplied with the library and hence can run only if the library is installed on the system running the model.
Breaking a link can cause a model to fail when you install a new version of the library on a system. For example, if a model block invokes a function that is supplied from a library. If you break the link for such a block, the function can no longer be invoked from the model, causing simulation to fail. To avoid such problems, avoid breaking links to libraries.

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