How to programmatically distinguish between different block type?

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Sohil Shrestha
Sohil Shrestha on 28 Dec 2021
Edited: Paul on 28 Dec 2021
We can get the block type using
get_param(gcb,"BlockType")
However, several block types are returned as Subsystem or S-function for which we can look at ReferenceBlock parameter
get_param(gcb,"ReferenceBlock")
But the Delay block has different version such as Variable Integer Delay, Enabled Delay etc most of which returns Delay as the block type.
How do I distinguish between them?

Accepted Answer

Sohil Shrestha
Sohil Shrestha on 28 Dec 2021
Apart of Tapped Delay In Discrete library, all other versions of Delay can be obtained by changing certain dialog box parameter.
The port information can be viewed from "InputPortMap" parameter. Given the parameter is read-only, I am assuming the order of the port label will be fixed and correspond to
get_param(< Block>,"PortConnectivity")(X).type number where X is the particular number of port.

More Answers (2)

Sulaymon Eshkabilov
Sulaymon Eshkabilov on 28 Dec 2021
Use instead this fcn command:
BlockPaths = find_system('MY_model','Type','Block') % MY_model.slx is Simulink model that contains model blocks including a different delay blocks
  1 Comment
Sohil Shrestha
Sohil Shrestha on 28 Dec 2021
The above will return the full path of the block with its name.
Example . Support there is a Constant Block named 'a' in MY_model, it will return
{'My_model/a' }

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Paul
Paul on 28 Dec 2021
Edited: Paul on 28 Dec 2021
Well, it does appear that there are several blocks in the Discrete library that all have BlockType == 'Delay'
As far as I can tell, and I might be wrong, the only way to distinguish how each is configured is to interrogate other parameters of the block, like
get_param(gcb,'ShowEnablePort')
to determine which input ports are "active" (I can't think of a better word) and go from there.
The PortHandles property might also be of interest.

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