Hello. I am new to scilab (version ‘scilab-2025.0.0’) and this community. I want to use Xcos as replacement to Matlab’s Simulink for my Mech. Eng. classes. Simulations with the ‘normal’ (explicit) blocks work well and produce the output graphs but when I try simulating a simple RLC circuit using the Modelica blocks in electrical palette, it produces the following error:
“Modelica blocks are reduced to a block with:”
“Number of differential states: 2”
“Number of algebraic states: 0”
“Number of discrete time states : 0”
“Number of zero-crossing surfaces: 1”
“Number of modes : 1”
“Number of inputs : 0”
“Number of outputs: 1”
“Input/output dependency:[T]”
“Analytical Jacobian: enabled (%Jacobian=%t)”
“Parameter embedding mode: enabled (%Modelica_ParEmb=%t)”
“”
"Generated files path: C:\Users\nahom\AppData\Local\Temp\SCI_TMP_14844_7487"
“”
Generate a loader file
Generate a Makefile
Running the Makefile
“sorry compiling problem”
“Attempt to reference field of non-structure array.”
“c_pass1: build the modelica meta-block failed”
“xcos_simulate: Error during block parameters update.”
What does this mean? And how do I fix it? Thanks in advance!
No. So, I guess what you are talking about is an external C/C++ compiler for running the modelica blocks? I just learnt about this from chatting with Github co-pilot. It told me to get something called MinGW-w64 from its website but there I read that MinGW-w64 is not enough on its own and I need a " pre-built toolchain" and there were many options for that. Am I at the right place? What do I do next?
Best option is Visual Studio Community edition (Visual Studio 2022 Community Edition – Télécharger la dernière version gratuite) or Scilab’s mingw toolbox (ATOMS : MinGw toolbox details, which need the installation of MinGW gcc, please carefully read installation instructions).
S.
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Apparently you haven’t read the instructions at ATOMS : MinGw toolbox details :
MinGW Compiler support for Scilab on Windows:
You need to install MinGW gcc package distributed by Equation Solution first
(subsequent versions of gcc should work as well).
Both 32 and 64 bit versions of the MinGW gcc package (gcc-10.3.0-32.exe and
gcc-10.3.0-64.exe files) can be found in the “Files” section of the
*MinGW Toolbox page at *
https://atoms.scilab.org/toolboxes/mingw/10.3.0/files/gcc-10.3.0-32.exe
https://atoms.scilab.org/toolboxes/mingw/10.3.0/files/gcc-10.3.0-64.exe
After installing the MinGW package, logout/login your Windows session and
finally install the MinGW Scilab toolbox. The first time you load the toolbox,
Scilab will rebuild some gcc libraries. The process may take a minute or more so
please be patient and wait until Scilab returns control to the command prompt.
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Thank you! It works now. Looks like the problem was I downloaded the wrong package yesterday. I was checking out the Xcos demos and it looks like I can do a lot of awesome things, very similar to MATLAB’s simulink. But most of the demos don’t have explanations and the help browser is not really that helpful. Wish there were more tutorials or books I can reference to make the learning curve a bit smoother. Anyway, thanks for you help. I didn’t know that you are one of the authors of the toolboxes on ATOMs! Until next time 
OK fine. There’s a book about Xcos " Introduction to Xcos: A Scilab Tool for Modeling Dynamical Systems", the authors made it available on ResearchGate: https://www.researchgate.net/publication/343472236_Introduction_to_Xcos_A_Scilab_Tool_for_Modeling_Dynamical_Systems
S.
3 Likes
