The Modbus protocol was just as easy to integrate with Ethernet as it was with serial networking. Thus was born Modbus TCP/IP. In the meantime, ... (OSI) model, which are the physical and primary ...

TCP/IP also is a layered protocol but does not use all of the OSI layers, though the layers are equivalent in operation and function (Fig. 2). The network access layer is equivalent to OSI layers ...

While some people may argue that the OSI model is obsolete (due to its conceptual nature) and less important than the four layers of the TCP/IP model, Kumar says that “it is difficult to read ...

Acromag releases an invaluable white paper providing in-depth discussion of the Ethernet protocol, explains OSI layers and illustrates key concepts. The Modbus protocol was developed in 1979 by ...

As a matter of fact, when I started writing this post I titled it “Layer 4 of the OSI Model – understanding the application layer,” and then I had to go back and correct myself.