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Generating Ladder Diagram Code from Simulink

The following example demonstrates how to import a simple Ladder Diagram from an .L5X file (simpleController.L5X) into the Simulink® environment and then generate Ladder Diagram (L5X) from the imported model. The Ladder Diagram .L5X file was created using RSLogix™ 5000 IDE and contains contacts and coils representing switches and motor. The following is a snapshot of the ladder structure.

  1. Use the plcladderimport function to import the ladder into Simulink.

    [mdlName,mdlLib,busScript] = plcimportladder('simpleController.L5X','OpenModel','On')
  2. The imported model contains a PLC Controller block named simpleController, followed by a Task block named MainTask and finally a Ladder Diagram Program block named MainProgram. The model imported into Simulink has blocks that implement the functionality of the contacts and coils.

  3. Generate code for the subsystem, simpleController/simpleController.

    generatedFiles = plcgeneratecode('simpleController/simpleController');
    
    PLC code generation successful for 'simpleController/simpleController'.
    
    Generated ladder files:
    plcsrc\simpleController_gen.L5X

    Note

    You cannot generate Structured Text code from the Ladder Diagram blocks. The Ladder feature supports only ladder code generation.

See Also

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