Download Ethernet Design Considerations for Control System

CHAPTER 2
Designing the Supervisory and Manufacturing Ethernet
This chapter contains guidelines for configuring the supervisory control network. In
our network reference model, this is Level 2.
Rockwell Automation recommends using an Ethernet network to connect the PC
clients in your control system network to the controllers and to the servers running
supervisory software.
Adopting standard Ethernet and IP technologies throughout the production
environment allows manufacturers to better share real-time plant-floor data with their
enterprise applications. Moving to standard Ethernet and IP technologies can also
result in significant cost savings, better maintenance, enhanced flexibility, and
increased efficiency by easing the integration of plant-floor systems with business
systems.
This guide provides best practices and recommendations for successfully integrating
Ethernet and IP technologies into an industrial automation environment that uses
Rockwell Automation products.
OSI Seven Layer Model
The Open Systems Interconnection Basic Reference Model, also referred to as the OSI
seven layer model, is a layered, abstract description for communications and computer
network protocol design, developed as part of the Open Systems Interconnection
(OSI) initiative.
The terms ‘level’ and
‘layer’ are used in this
guide when discussing the
network reference
architecture. Note that
the term ‘layer’ refers to
a layer in the OSI seven
layer model. The term
‘level’ refers to a level of
operation in a production
facility as defined by the
Purdue Model. (See
“Overview of Network
Levels” on page 5.)
OSI seven layer model for network communications with protocol
examples
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