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CODESYS Example: PROFINET I/O-Controller and PROFINET IRT Gateway

Introduction​

This tutorial demonstrates how to run a PROFINET I/O-Controller on the RevPi Connect and exchange data with the KUNBUS Gateway PROFINET IRT Slave.

Prerequisites​

Hardware Requirements​

  • 1 RevPi Connect+
  • 1 RevPi Gateway Profinet IRT Slave

Software Requirements​

  • CODESYS Development System installed on your PC

Preparation​

Hardware Setup:​

Tipp: For detailed instructions about how to set up your system, refer to the Getting Started guide.

Software Setup:​

note: To ensure a compatible system with suitable software, please refer the following links:

Overview​

The application writes:

  • [0,1,2..15] to the first 16 Bytes of the output slot (kunbus_gw_9).
  • [16,17...31] to the first 16 Bytes of the PROFINET IRT Gateway process image output area.

Step 1: Configuration​

Network Configuration​

  • RevPi Connect:

▷ Configure the eth1 interface for PROFINET in /etc/dhcpcd.conf with the following settings:

# Example static IP configuration:
interface eth1
static ip_address=192.168.0.11/24

  • Gateway PROFINET IRT Slave

▷ Configure the KUNBUS Gateway PROFINET IRT Slave station name as kunbus-gw and IP as 192.168.0.15 using Proneta. For detailed instructions refer to the user manual of the Gateway component for PROFINET

Proneta

Graphical overview of the PROFINET network:

Proneta

Step 2: Configure the PROFINET Network in CODESYS​

  • Scan for Devices:

▷ Open the PROFINET Controller (PN_Controller) interface.

CODESYS

▷ Execute the Scan for Devices operation to identify the KUNBUS Gateway PROFINET IRT Slave.

  • Add Device:

▷Use the Copy All Devices to Project option to add the I/O device to the CODESYS device tree.

▷ Alternatively, manually add the KUNBUS-GW-ProfiNet module in the CODESYS device tree.

CODESYS

The following figure shows the CODESYS device tree overview of the example.

CODESYS

Step 3: Process Data Mapping​

  • Input Process Data:

Map the process data for the input slot (kunbus_gw_1) as follows:

  • Input Bytes: First 16 Bytes.

CODESYS

  • Output Process Data:

Map the process data for the output slot (kunbus_gw_9) as follows:

  • Output Bytes: First 16 Bytes.

CODESYS

Step 4: Test the Configuration​

  1. Run the Application:

▷ Deploy and execute the application on the RevPi Connect.

  1. Verify Data Exchange:

▷ Check the input and output process image areas of the KUNBUS Gateway PROFINET IRT Slave using diagnostic tools like CODESYS or Siemens Proneta.

Additional Notes​

  • Ensure the IP address and station name of the Gateway match the configuration in Proneta.

  • For detailed instructions, refer to the KUNBUS Gateway PROFINET user manual.

This setup enables seamless data exchange between the RevPi Connect and the KUNBUS Gateway PROFINET IRT Slave.