<Ethemet module and commumcation model>
The following shows the software configuration of the Ethernet module corresponding to the "OSI reference model".
The Physical and Data link layers correspond to the "Ethernet" part of the Ethernet module.
The Network and the Transport layers correspond to "IP" and "TCP/UDP" parts of the Ethernet module.
Much higher layers such as Session, Presentation and Application correspond to the software part for various functions designed specific to the MELSEC-Cł, which has been realized by combinations of the Q series PLC CPUs and the Ethernet module.