Generating Ladder Diagram Code from Simulink

This example shows 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. This figure shows 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.