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Practical industrial networking is a hands-on basic introduction to the world of industrial networking. The focus is on the physical layer and installing and commissioning simple industrial networking systems. Despite the focus on the basics and fundamentals you will still leave the workshop with valuable tools in designing, installing, commissioning and installing your own industrial network. Ethernet is fast becoming the obvious choice for industrial control networking worldwide and the course will focus on this. While the basic structure of Ethernet has not changed much, the faster technologies such as fast Ethernet and gigabit Ethernet have increased the complexity and choices you have available in planning and designing these systems. As Ethernet has become more complex, a number of misconceptions have arisen as to how Ethernet functions and how the system should be optimally configured. This workshop addresses these issues in a clear and practical manner, thus enabling you to apply the technology quickly and effectively in your next project. The workshop commences with a brief outline of the fundamentals of Ethernet and its operation. The method of access is discussed in depth and topics such as full duplex and auto negotiation are explained. The best methods of designing and installing the cabling systems are then explored with the discussion ranging from 10Base-T over twisted pair to gigabit Ethernet cabling. Methods of optimising Ethernet to obtain best performance are then defined. Finally the all important topic of troubleshooting is examined with a summary of the typical problems you are likely to encounter from a two station network all the way up to a system comprising 30,000 PCs. MORE INFORMATION: http://www.idc-online.com/content/practical-industrial-networking-engineers-technicians-4
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Practical Industrial Networking for Engineers & Technicians
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Topics
• Ethernet history
• Standards
• Networking basics
• OSI Reference Model
• TCP/IP Reference Model
• Network topologies
• Network communication
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Ethernet Versions
• Ethernet V1 obsolete
• Ethernet V2 (DIX, Bluebook)– Proprietary to DEC, Intel and Xerox
• IEEE802.3 CSMA/CD– Open LAN standard
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Local Area Network
• Communications system
• Within an organization
• Privately owned
• 2-3 km max typically
• Workstations, servers, peripherals, shared medium
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Wide Area Network
• LANs separated by distances that require telecomms links
– Links public/privately owned
– Shared lines - packet/circuit switched
– Leased lines - dedicated connection
– Distance can be global
– Slow to medium speed cf LANs
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OSI Reference Model
• Set of rules operates at each layer – implemented as protocols
• Possibly more than one set of rules per layer
• Protocols at each layer ONLY communicate with the layer directly above or below
• Each layer responsible for a particular area of the connecting functionality
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Application
Presentation
Session
Transport
Network
Data L ink
Physica l
The OSI Reference Model
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OSI Model
Application
P resentation
Session
Transport
Network
Data L ink
Physica l
Applica tion
P resentation
Session
Transport
Network
Data L ink
Physica l
Process A Process B
Communication Channel
Physica lData
B its
Frames
Application PDU
Presentation PDU
Session PDU
Transport PDU
Packets
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Addition of Headers/Trailers
PH
PH
Message
Message
Message
Message
Message
Message
AH
AH
AH
AH
AH
AH
AH
PH
PH
PH
PH
SH
SH
SH
SH
SHTH
TH
TH
THNH
NH
NHDLH
DLHPre NT
NT
NT
DLT
DLT
Post
App lica tion
P resen ta tion
Session
Transport
N e tw ork
D a ta L ink
P ysica l
Protocol Contro l In fomation(PC I) or Header
Message
Message
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Physical Layer (1)
• Defines electrical/mechanical connections
• Responsible for:• Modulation
• Multiplexing
• Ensuring ‘1’ transmitted = ‘1’ received
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Data Link Layer(2)
• Creates, transmits, receives data packets (frames)
• Error detection/ correction
• Sub-layers:– Medium Access Control
– Logical Link Control
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Network Layer (3)
• Fragmentation
• Routing
• Flow control
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Transport Layer (4)
• End to end control
• Segmentation
• Data stream reconstruction
• Packet verification
• Receipt acknowledgement
• Socket services
• Flow control
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Session Layer (5)
• Synchronization of dialogue (‘sessions’) between user applications
• Transparent recovery
• Name functions and security
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Presentation Layer (6)
• Data translation:– Data conversion
– Text compression
– Encryption
• Rarely appears in ‘pure’ form
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Application Layer (7)
• Gives user applications (clients, servers) access to protocol stack
• Supports e.g: – File transfer services– Web browsing– Electronic mail– Network management
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Network Topologies
• Three basic topologies:– Bus
– Star
– Ring
• Hybrids possible
• Physical/logical topologies may differ
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Bus Topology
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Star Topology
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Ring Topology
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Switching
Two basic methods of communicationbetween devices:
• Circuit switching (e.g. analog telephones)
• Packet switching (e.g. Internet)
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