Using replace_block with custom simulink library

Question

Matthew Nelson 2016-6-21

3
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/291434-using-replace_block-with-custom-simulink-library

回答： tkarg 2021-12-9

I am trying to create a script that goes through old models looking for outdated versions of custom library blocks and automatically updates them to the newest versions. To do this I am trying to utilize the commands find_system and replace_block. This first to identify which outdated blocks exist in the model, and the second to replace them with the new blocks. However, when attempting to utilize these functions, they report

Invalid NewBlock (<PeakandHold>) passed to
REPLACE_BLOCK.
Try built-in/BLOCKTYPE or a valid block name.

These blocks are all located in a custom library named PME_Library and then organized into folders. When using replace block on just the block name to a built in block type works, but doing it based on block type or when trying to replace the target block with a custom library block results in this error. How do I get these functions to use blocks inside the custom library.

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

tkarg 2021-12-9

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/291434-using-replace_block-with-custom-simulink-library#answer_851480

在 MATLAB Online 中打开

Maybe it is a bit late for a response but the solution can be helpful for anybody reading.

You need to use path of your custom block -not block type, in the replace_block function. Following code replaces Gain blocks in the model with your custom block.

replace_block(model, 'BlockType', 'Gain', 'your_library/your_block_name');

Another thing, your Simulink library should be loaded into the memory when you are using a block from it (in replace_block or wherever). You can do this by opening it through Simulink, or with the following command in Matlab script:

load_system your_library

These are valid at least for 2021a.