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Entry type: Application example Entry ID: 56969417, Entry date: 02/01/2019
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WinAC Target: Add-on for MATLAB/Simulink for integrating and calling MATLAB/Simulink models using STEP 7 and WinAC ODK

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Make MATLAB/Simulink models run on a programmable logic controller in a few steps

In automation and control engineering, the MATLAB/Simulink software from MathWorks is frequently used to graphically model and simulate processes and PID controllers. The requirement is to run Simulink models created in a few steps on a programmable logic controller.
MathWorks provides the option to compile the Simulink models into C/C++ code using Embedded Coder. This code in turn can be integrated into a WinAC ODK project and called and executed from the S7 program via DLL/RTDLL.

Solution
This application illustrates the integration of MATLAB/Simulink models using STEP 7 and WinAC ODK on a powerful PC-based controller with WinAC RTX.

Note:
SIMATIC WinAC RTX is listed as phase-out product. The solution with the successor product SIMATIC S7-1500 Software Controller and SIMATIC Target 1500S you will find in this entry:
SIMATIC Target 1500S: Calling Simulink® Models 


WinAC Target facilitates integration and independently generates:

  • DLL or RTDLL file with the algorithm of the Simulink model
  • SCL source with the interfaces of the model and the communication with the DLL/RTDLL file

This allows you to quickly and conveniently port a Simulink model to a WinAC RTX controller and place it in service.

Using the example of a PID controller, we provide a detailed description of all steps: From the creation of the PID controller in MATLAB/Simulink to the execution on the WinAC RTX PC-based controller. It shows you how to use WinAC Target in a time-saving and easy way to integrate MATLAB/Simulink models. Models can be integrated for STEP 7 V5.5 and also for STEP 7 V11 SP2 or higher.

To integrate the Simulink model, the following steps are performed:

  1. Creating a model in MATLAB/Simulink and testing it in MATLAB/Simulink
  2. Compiling the Simulink model into an SCL source and a DLL/RTDLL file using WinAC Target
  3. Integrating the SCL source into the S7 program
  4. Copying the DLL/RTDLL file to the IPC with WinAC RTX
  5. Downloading the S7 program to WinAC RTX and launching it

Advantages
This application provides, in particular, the following advantages:

  • Easy integration of Simulink models into WinAC RTX
  • Simulink External mode for monitoring Simulink models and changing integrated model parameters during operation:



    1. Graphical online view of the running process
    2. Changing internal model parameters using Simulink
     
  • Manipulating internal model parameters in the user program with STEP 7

Benefits
This application provides, in particular, the following advantages:


  • Easy and time-saving familiarization with WinAC Target through detailed step-by-step instructions
  • Optimized process for integrating Simulink models into WinAC RTX
  • Effective commissioning and diagnostics with Simulink and External mode
  • Flexible options to change internal model parameters during operation in the STEP 7 program

Overview of the application (Video)



 Registrierung notwendig  Download Video (172,4 MB)


Downloads
  Documentation (3,8 MB)
  Example projects (6,5 MB)
SHA-256 checksum: 8E3B270BE538A45809440F5472BBB4DB9D986F3795207FABBFEF260D7D896361
 Registrierung notwendig  WinAC Target SETUP V1.5.1 (483,0 KB)
SHA-256 checksum: 97F57D247364F486CAF7710E84E4134E7C9E3D83036FDC28C1E39D95453A8E15

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Requirements for installation:

  • Windows XP Professional or Windows 7 32-bit
  • STEP 7 V5.5 with SCL V5.3 or STEP 7 V12 SP1 is required
  • WinAC ODK V4.2
  • MATLAB/Simulink R2012b is required