Ethernet Networks; Introduction - GE Mark VIe System Manual

3

Ethernet Networks

3.1 Introduction

The integrated control system is based on a hierarchy of Ethernet networks, used to interconnect individual nodes or zones.
These networks separate the different communication traffic into layers according to their individual functions. This hierarchy
extends from the I/O modules and controllers (providing real-time control of the process) to the HMIs, and out to
facility-wide monitoring and external networks (industrial internet).
Each network layer uses industry standard components and protocols to simplify integration between different platforms and
improve overall reliability and maintenance. These layers are designated as IONet, Unit Control, Supervisory, and Enterprise
in the following figure, which displays a simplified network hierarchy and is not representative of any specific installation.
Ethernet Networks GEH-6721_Vol_I_BP System Guide 75
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