What is Industrial Ethernet

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Industrial & Optical Ethernet

Industrial Ethernet Networks?

• There is only one Ethernet– 802.3– Ethernet v2

• So what is Industrial Ethernet ( also called rugged or hardened ) ?– The use of Ethernet technology in harsh and

industrial environments vs. benign environment ( also called commercial, business, enterprise, consumer Ethernet)

– The use of Ethernet and TCP/IP as a transport mechanism for industrial protocols

Industrial & Optical Ethernet

Aspects of Industrial Ethernet

• Environment• Operation• Maintenance• Management

Environment

Industrial & Optical Ethernet

Physical Characteristics

• No “standard” Industrial Ethernet switch• Specification must match PLC• Network equipment must not be the weakest link

Industrial & Optical Ethernet

• Marine• Substation• Transportation•  ATEX Zone 2

Certifications

Industrial & Optical Ethernet

Environmental Conditions

• Mounting• Form factor• Operating voltage• Temperature• No fans• Vibration• Resistance to EMI• Protection class• Conformal coating

Industrial & Optical Ethernet

Ports

• Number of ports• Speed• Media types• Connectors

Operation

Industrial & Optical Ethernet

Managed or Unmanaged Switches

• Managed– Required for more complex network configurations– High network visibility– Manageability– Ring redundancy

• Unmanaged– Low cost– Low maintenance– Plug and play

Industrial & Optical Ethernet

Network Design

• Office networks– Overbooking– Traditional estimation

•  Industrial networks– Non-blocking– Distributed approaches

Industrial & Optical Ethernet

Message Types

• Unicast - message to a single destination

• Broadcast - message to all nodes in a subnet

• Multicast - message to a group of devices

Industrial & Optical Ethernet

Multicast Control

• Ethernet floods multicasts by default• Every end device must process

received multicasts• Multicast control on Ethernet

– IGMP

Industrial & Optical Ethernet

Maintenance

• Device Replacement• Rapid rectification of failures required

– The “Midnight Maintenance Man”– Device replacement techniques– Standardized / Proprietary– Exchangeable memory media– Topology-dependent configuration

Industrial & Optical Ethernet

Management

• Why?– Fault notification and location– Proactive notification of potential

problems

• How?– SNMP– OPC– Profiles

Industrial & Optical Ethernet

Conclusion

• What benefits does Industrial Ethernet bring?– Higher bandwidth– Convergent networking– Cost reduction– Open connectivity– Vertical integration– Standardization