For communication with the PROFINET RT protocol, the PROFINET IEC stacks use a special runtime interface (SysEthernet) that allows the transmission of RAW Ethernet frames.
This runtime component must be activated in the configuration file of PLC.
[ComponentManager]
Component.1=CmpSysEthernetOn the CODESYS Control RTE V3 runtime, the components "CmpEt1000Drv" for Intel and "CmpRTL8169Mpd" for Realtek are required.