Introduction

The following Chapters describe the Usage of a Raspberry Pi as Software SPS in combination with the SoM as Client.

Prerequisites and Topology

You’ll need:

• “CODESYS”: https://de.codesys.com/

• Raspberry Pi as Software SPS (minimum Model 3 recommended)

• Installed Plugin “CODESYS Control for Raspberry Pi” (free, with a runtime limitation up to 2 hours): https://store.codesys.com/de/codesys-control-for-raspberry-pi-mc-sl.html

• SoM EVAL Kit

Option 1 shows the usage of the Raspberry as Soft SPS and an seperate SoM Eval Kit as a device. Option 2 uses the Raspberry as Soft SPS and in Combination with a SoM-Adaptershield also as Application Controller.

Open

Option 1: Raspberry Pi as Soft SPS and seperate SoM EVAL Kit as Device

Open

Option 2: Raspberry Pi as Soft SPS and in combination with SoM Adapterhield as Application Controller and Device

Setup of a new Project

1. Create a new “Standard project” with the device “CODESYS Control for Raspberry Pi”.

2. Change to tab “Raspberry Pi” [1], choose the right Configuration [2] and Install CODESYS Runtime Package on the Raspberry Pi [3].
   
   

3. Choose the Tab “Devices” [4], double click “Device” [5] in the Explorer on the left side. “Scan Network” [6] and Choose the Raspberry Pi [7] as Gateway.
   
   

SoM as Profinet Device

1. Open “Tools”->”Device Repository…” and select “Install”. Choose the appropriate GSD, e.g. GSDML-V2.4-portGmbH-irj45-20211007.xml. Select “Close” after installing succesfully.

2. Click Right on “Device” and Select “Add Device”, Choose “Fieldbusses”->”Profinet IO”->”Ethernet Adapter”->”Ethernet” [1], Apply with “Add Device”.
   
   

3. Click Right on “Ethernet (Ethernet)” and also add PN-Controller: “Fieldbusses”->”Profinet IO”->”Profinet IO Master”->”PN-Controller”.

4. Click Right on “PN_Controller (PN-Controller)” and also add Device: “Fieldbusses”->”Profinet IO”->”Profinet IO Slave”->”port”->”2-port Device” [2].
   
   

5. Double Click on the Device “Ethernet (Ethernet)” [3] and select the appropriate Network Interface [4] connected with the SoM on the Raspberry Pi.
   
   

    

6. Log into the Raspberry Pi [5] and start the application with “Start”.