TcOpen.TcoCognexVisionConnector 0.11.0-alpha.3

TcoCognexVision

Introduction

The TcoCognexVision is a set of libraries covering the product portfolio of the vision systems from the vendor Cognex for the target PLC platform Twincat and TcOpen framework.

The package consists of a PLC library providing control logic and its .NET twin counterpart aimed at the visualization part. This package currently covers following product range:

1. Dataman firmware v5.x.x
2. More enroute

General TcOpen Prerequisites

Check general requisits for TcOpen here.

Dataman v5.x.x

• PLC enviroment

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  Preconditions: The gsdml file(s) included in this package is(are) copied into the subfolder ..\Config\Io\Profinet\ of the TwinCAT3 instalation folder, before opening Visual Studio. The Profinet interface of the slave device is activated, its Profinet name is set and its network parameters are set to match the address range of the Profinet master. This settings needs to by done by DATAMAN SETUP TOOL SOFTWARE provided by Cognex.

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  • Implementation steps.

    1. Declare the hardware structure in the Global Variable list (GVL).

    VAR_GLOBAL
        myVeryFirstDatamanGVL 	: TcoCognexVision.TcoDatamanIO_v_5_x_x;
    END_VAR
    

    2. Build the XAE project.

    3. Add Profinet master device, set its network adapter and network parameters.

    4. Using the gsdml file mentioned, add Profinet slave device, choose proper DAP (Device Access Point) and set its Profinet name and network parameters to match those already assigned by the configuration tool.

    5. If necessary for your application, change the predefined submodule User Data - 64 bytes in the slots 6 to matches your requirements.

    6. If necessary for your application, change the predefined submodule Result Data - 64 bytes in the slots 7 to matches your requirements.

    7. Link all items of the structure GVL.myVeryFirstDatamanGVL with the respective items of the Application Process Identifier (API) of the slave device, so as the items Inputs.PnIoBoxState, Inputs.PnIoBoxDiag and Outputs.PnIoBoxCtrl.

    8. Create the Function Block that extends the TcoCore.TcoContext function block.

    9. Inside the declaration part of the function block created, add an instance of the TcoCognexVision.TcoDataman_v_5_x_x function block with the initialization according to the example.

    FUNCTION_BLOCK myVeryFirstTcoContext EXTENDS TcoCore.TcoContext
    VAR
        {attribute addProperty Name "<#Enter the user friendly name of this instance here!!!#>"}
        myVeryFirstDataman : TcoCognexVision.TcoDataman_v_5_x_x(THIS^);
    END_VAR
    

    10. Add the Main method to the function block created in the step 8, and insert the TcoDataman_v_5_x_x instance call with passing the mapped hardware structure.

    11. Add call of the method Service() according to the example. By calling this method, all control elements of this component are accessible later in the visualization.

    myVeryFirstDataman(inoIoData:= GVL.myVeryFirstDatamanGVL);
    myVeryFirstDataman.Service();
    

    12. In the declaration part of the MAIN(PRG) create an instance of the function block created in the step 8 according to the example.

    PROGRAM MAIN
    VAR
        myVeryFirstTcoContextInstance :	myVeryFirstTcoContext;
    END_VAR
    

    13. Into the body of the MAIN(PRG) add the call of the Run() method of the instance created in the previous step, according to the example.

    myVeryFirstTcoContextInstance.Run();
    

    14. Build and save the XAE project.

    15. Activate configuration, load the PLC program and swith the PLC into the run mode.

• .NET enviroment

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  Preconditions: All neccessary packages are installed, all neccessary references are set, connector to the target PLC is set. MainWindow.xaml has its view model declared and its DataContext is set to this view model, according to the example.

      <Window.DataContext>
          <local:MainWindowViewModel />
      </Window.DataContext>
  

  ---

  • Implementation steps.

    1. Run the Vortex Builder.

    2. Into the MainWindow.xaml insert any kind of container, for example StackPanel and bind its DataContext to the MAIN of the EntryPointToYourPlc.

    <StackPanel DataContext="{Binding EntryPointToYourPlc.MAIN}">
    </StackPanel>
    

    3. Into the container added, insert the RenderableContentControl and bind its DataContext to the myVeryFirstTcoContextInstance.myVeryFirstDataman, using the PresentationType of the value Service.

    <vortex:RenderableContentControl DataContext="{Binding myVeryFirstTcoContextInstance.myVeryFirstDataman}" PresentationType="Service"/>
    

    4. After starting the application and expanding the view, final view should look as follows:

• links

  • Example project could be found here TodoEnterLinkToExample

  • How to video could be found here TodoEnterLinkToVideo