accessing Data associated with bus signal inside a s-function

2012 6 14
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更新时间：2013 10 23
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Hi, Is it possible to access data associated with a signal which is output of a bus creator in its structure form? For example I have two signals (signal1 and signal2) , I send them to a bus creator whose output is signal3. So Signal3 is now a structure. I have to access the data associated with signal1 and signal2 in s-function in following way. Signal1_Data = signal3. signal1; Signal2_Data = signal3.signal2;
Is it possible?
Thanks, Jagmohan

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回答（1 个）

TAB
TAB 2012-6-14

1 个投票

You can access the bus signal data in the s-function in the same way you have mentioned (ie in structure format)
Bus Input/Output support for s-function, using S-function builder is included from Simulink 7.3 (R2009a).
See a similar thread here.
Also see
S-functions, Bus Signals, and Missing Documentation
Input and output Bus signals to and from an S-function

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Jagmohan singh
Jagmohan singh 2012-6-14
Hi thanks for the answer.
But I couldnt find the properties 'Bus' and 'Bus Name' in 'Data Properties' Tab of s-function builder block.
And Is it not possible to use Level-2 s-function ? I could not find any property like 'Bus' or 'Bus Name' also in its properties.
Currently I am working on Matlab2006b.
Thanks
TAB
TAB 2012-6-14
This feature is not available in s-function builder of 2006b and I am not aware how to access the bus in s-function manually.
Kaustubha Govind
Kaustubha Govind 2012-7-6
Bus support is not available in MATLAB S-functions. Bus signals are supported in (Embedded) MATLAB Function blocks and C-MEX S-functions however.
I really need bus signal support in a level 2-M S-function. This should be supported... (Feature request??)
Any work around to work with a "struct-like" data type in an M S-function?

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