PROFINET only uses OSI layers one and two to transmit real-time data. One the wire, that means that only the Destination and Source MAC addresses are packed in the frame, along with the Ethertype.
PROFINET RT Packet Payload
PROFINET only uses OSI layers one and two to transmit real-time data. One the wire, that means that only the Destination and Source MAC addresses are packed in the frame, along with the Ethertype.