Why do I get errors regarding "Simulink Real-Time Target Support Package" or "sg.mw.TargetImplQnx" with my deployed SLRT app?

I am trying to run a real-time simulation on my Speedgoat target from a standalone application deployed using MATLAB Compiler, but I encounter one of the following errors: 

Error communicating with target 'xxx.xxx.x.x': Unable to
connect to target computer 'xxx.xxx.x.x': Function
requires Simulink Real-Time Target Support Package.
Open Add-On Explorer to install the support package.

Or I get the following error regarding "sg.mw.TargetImplQnx":

Error communicating with target 'xxx.xxx.x.x': Error on
target computer 'xxx.xxx.x.x': Unable to resolve the
name 'sg.mw.TargetImplQnx'. You tried to connect to a
Speedgoat target machine. Please download and install
the latest version of the Speedgoat I/O Blockset from
speedgoat.com/login.

Answer 1

[MathWorks Support Team]

The error message indicates that the "Simulink Real-Time Target Support Package", or the associated "Speedgoat I/O Blockset", were not included when compiling the application. To correct this, the app creator needs to make sure to install Speedgoat I/O Blockset and re-build the real-time application MLDATX file. In addition, the app creator needs to ensure "Simulink Real-Time Target Support Package" is compiled into the application:

Using Application Compiler:

When you package MATLAB code or an App Designer app that communicates with a Speedgoat real-time target, wait until "Simulink Real-Time Target Support Package" appears under "Suggested Support Packages" in the Application Compiler app before you package the application:

Also, don't forget to specify the real-time application MLDATX file under "Files required for your application to run".

Once you saved the Application Compiler session as PRJ File, it should remember this dependency every time you open the PRJ file.

Using mcc:

When using the "mcc" command instead of Application Compiler to package the app, the equivalent switch is "-Z" as shown below (available in R2021b and later):

mcc -e slrt_ex_pendulumApp.mlapp -a slrt_ex_pendulum_100Hz.mldatx -Z 'Simulink Real-Time Target Support Package'

.

Important note for MATLAB R2024a:

If the standalone SLRT app is developed in MATLAB R2024a, make sure to use at least the following software versions:

• MATLAB R2024a Update 7
• Simulink Real-Time Target Support Package" v24.1.1
• Speedgoat I/O Blockset v9.8.1.1

To check the software versions, use the following code:

>> version
>> matlabshared.supportpkg.getInstalled
>> speedgoat.version

.

Further reading:

See the following MATLAB answer for a collection tips for deploying SLRT app with MATLAB Compiler: Best practices & tips for creating standalone SLRT apps for interaction with Speedgoat using App Designer & MATLAB Compiler