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fixed-point license problem

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Zhenkai on 26 Jul 2013
Commented: Rama Kolla on 4 Mar 2020
I have a Simulinik model that uses fixed-point data type. Previously it runs fine, but recently I renewed the license, and it can't run anymore, which will complain this:
requested use of data type 'sfix32_En16'. Use of this data type requires a fixed-point license, but license checkout failed. To use this model without a fixed-point license, select "Fixed-Point Tool" under "Fixed-Point" from the model's Tools menu. Select the root model in Model Hierarchy. Set "Fixed-point instrumentation mode" to be "Force off", "Data type override" to be "Double" and "Data type override applies to" to be "All numeric types". This replaces most uses of fixed-point data types with floating-point doubles. In rare cases, a few attempts to use restricted data types may still exist. Reconfiguring to use floating-point types and/or inserting Typecasts is necessary in these cases.
The weird thing is I checked the license and it contains "Fixed-Point Toolbox".
Any hints what I should do?
Thank you,
Doan Vo
Doan Vo on 11 Mar 2014
Hello all, So any solutions? I get the same problem. Thanks.

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Answers (1)

Stefanie Schwarz
Stefanie Schwarz on 27 Jun 2018
In MATLAB R2012b and older, there are two separate products for Fixed Point: the Fixed-Point Toolbox encompasses fixed-point operations in MATLAB, whereas the Simulink Fixed Point toolbox caters to fixed-point operations in Simulink. This is probably why the license checkout failed error is observed.
This issue will not arise with MATLAB R2013a as the two toolboxes were merged into one.
In order to run the Simulink model, the 'Simulink Fixed Point' toolbox should be downloaded and licensed for, or MATLAB R2013a or higher version should be used.
Rama Kolla
Rama Kolla on 4 Mar 2020
Hello JuanCa
I am using Matlab 2015a, I am having the same issue, saying I need Fixed point designer lisence. But when I check my Matlab, it has the fixed point designer lisence. Can you please let me know, how did you solved the issue.
Thank you

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