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From: mjhendo on 20 May 2010 03:18
Hi,

I am extending an existing simulink model which has fixed point data
types defined in a file such as

fixdt_jc_pos = fixdt(1,32,24);
fixdt_jc_force = fixdt(1,32,16);

These are then used throughout the model to set input and output
types.

My problem is that when I create a new block and try to set the data
type to fixdt_jc_pos I get an error "Invalid Data Type Specification".

This seems to be a parser bug in the dialog box input validation. Any
name starting with fixdt is rejected unless it is a fully formed fixdt
function.

Blocks that already have the data type set run ok. They were made
with a previous version of simulink.

One workaround I have found is to edit the .mdl as text and change the
data type.

Can someone with the same version confirm this is a bug?
Has anyone got any better ideas to get around the problem?

MATLAB Version 7.10.0.499 (R2010a)
Simulink Version 7.5 (R2010a)

Michael
From: Qingmin Shi on 26 May 2010 13:09
Hi,

This Bug will be fixed in Simulink Version 7.6 (R2010b). Please see the bug
report
http://www.mathworks.com/support/bugreports/search_results?search_executed=1&keyword=Setting+the+data+type+of+a+Simulink+block+&release_filter=Exists+in&release=174&selected_products=&commit=Search
for more details.

Thanks,
Qingmin

"mjhendo" <mjhendo(a)gmail.com> wrote in message
news:33e67364-575c-4138-8c91-da4fcbd0f411(a)a27g2000prj.googlegroups.com...
> Hi,
>
> I am extending an existing simulink model which has fixed point data
> types defined in a file such as
>
> fixdt_jc_pos = fixdt(1,32,24);
> fixdt_jc_force = fixdt(1,32,16);
>
> These are then used throughout the model to set input and output
> types.
>
> My problem is that when I create a new block and try to set the data
> type to fixdt_jc_pos I get an error "Invalid Data Type Specification".
>
> This seems to be a parser bug in the dialog box input validation. Any
> name starting with fixdt is rejected unless it is a fully formed fixdt
> function.
>
> Blocks that already have the data type set run ok. They were made
> with a previous version of simulink.
>
> One workaround I have found is to edit the .mdl as text and change the
> data type.
>
> Can someone with the same version confirm this is a bug?
> Has anyone got any better ideas to get around the problem?
>
> MATLAB Version 7.10.0.499 (R2010a)
> Simulink Version 7.5 (R2010a)
>
> Michael


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