Loading application onto Revolution Pi

Previous: Hardware and software required for Revolution Pi tutorial 

Contents of this article:

These steps conclude the tutorial.

Starting  logi.CAD 3

Condition for an extended version of  logi.CAD 3 : You have already installed the required license.

  1. Go to the folder where you installed  logi.CAD 3 .
  2. Locate the file  logiCAD3 .exe to start  logi.CAD 3  and double-click it.

  3. If you have installed one version of  logi.CAD 3  only on your system, select the default workspace and click OK in the dialog.
    (warning) Mind the guidelines/recommendations for a workspace. Moreover, consider the guidelines/recommendations for projects that you are going to create in  logi.CAD 3 . See "Starting the development environment and the runtime environment" for those guidelines/recommendations.

  4. Only required at the first start of  logi.CAD 3 :

    • Accept the conditions of the license agreement.
    • If Windows security alerts The Windows Firewall has blocked some features of this program appear, click Allow access. Alternative: Contact your system administrator and ask him to define rules for the Windows firewall.

Creating project for Revolution Pi

  1. In menu File or from the context menu within the project explorer, select New and Project...
  2. In the dialog, expand  logi.CAD 3  Samples Projects for Hardware Connection, select the project template Counter Project for Revolution Pi  and click Next >.

  3. On the next page, enter or select the project name, uncheck Use default location and enter a location outside the workspace, then click Finish.

    No blanks or special characters in project name and location

    Make sure that there are no blanks or special characters (such as umlauts, e.g. ä, ö, ü) in a project name and no specials characters in the path. If anyway,  logi.CAD 3  will not be able to load the application onto the PLC.
    For the paths and project names, letters A – Z or a – z, numbers 0 – 9, dots (character .), underlines (character _) and dashes (character -) are allowed. Examples for allowed project names: my.projectmy-project, my_Project_01

    Result: The project is displayed within the project explorer. The existing ST-object RevolutionPiCounterProgram and other ST-objects (in folder src) already contains a sample application for the Revolution Pi. The existing PLC-object RevolutionPi contains a specification for IO_IMPORT that is required for accessing the hardware IOs of the Revolution Pi.

Entering the IP-address of Revolution Pi within PLC-object

The existing PLC-object for the Revolution Pi is RevolutionPi.

  1. Open the corresponding PLC-object.
  2. In the opened editor for the PLC-object, search for ADDRESS and enter the IP-address of your PLC.

    Given address
    ADDRESS :=;
    Example: IP-address of your PLC
    ADDRESS :=;
  3. Save the PLC-object.

Loading application onto Revolution Pi and testing

  1. Open the perspective Application Testing: menu WindowOpen Perspective and Application Testing

  2. Load the application onto the Revolution Pi: In the Instance view, select RevolutionPi/RevolutionPiResource. First click   and then  .
  3. Drag variables from the Instances view into the Values of Variables view.

  4. See Changing the values of variables in order to write the changed value to Revolution Pi.

Make sure that there is a constant power supply of the PLC for some time after the application has been loaded.

Reason: The synchronizing on the PLC harddisk might be started with a delay after the application has been loaded. Consequence: If there is a power cycle (i.e., the PLC is switched off and on again) immediately after the application has been loaded, the loaded application might be lost and you have to load the application onto the PLC again.

Alternative: Configure logi.RTS so that the harddisk of the target system is synchronized at once after the application is loaded (details: "A power cycle on a target system Pi causes the loss of the loaded application").

These steps conclude the tutorial.

Interested in details? See the following articles: