High-Speed Ethernet (HSE)cpereira/CursoBarramentos_Novo/HSE.pdf · or more H1 Fieldbus segments to the HSE. High Speed Ethernet Architecture DFI302 DFI302 10 The Gateway Device (GD)

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High-Speed Ethernet (HSE)

Carlos Eduardo Pereira

Universidade Federal do Rio Grande do Sul – UFRGSDepto Engenharia Eletrica – DELET

Grupo de Controle, Automação e Robótica - GCAR

Apresentação utiliza material da empresa Smar

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4-20 mADiscrete I/O

Foundation Fieldbus Control System

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HSE at Host-Level

H1 Fieldbus Devices

Operation Engineering Maintenance

ConventionalDevices

DFI302

Other Protocols

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High Speed Ethernet

• High-Speed Ethernet (HSE)– Based on Ethernet, IP and TCP/UDP

• Four basic HSE device categories:– Linking Device (LD)– Ethernet Device (ED) – Gateway Device (GD) – Host Device (HD)

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H1P

L

Plant

P

L

Plant

P

L

Plant

H1 H1

P

L

Plant

H1

100 Meters on Twisted Pair2000 Meters on Fiber

HSE CLIENT

100 Mbit/sSwitch

LinkingDevice

LinkingDevice

HSE Devices

High Speed Ethernet

High Speed Ethernet

High Speed Ethernet

EthernetField Device

High Speed Ethernet

Gateway

I/O Network

High Speed Ethernet

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The Host Device is the Operator Workstation, or a DCS.

HD

High Speed Ethernet Architecture

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The Host Device is the Operator Workstation, or a DCS.


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The Linking Device (LD) is a HSE node for connecting one or more H1 Fieldbus segments to the HSE.

LD LD


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The Linking Device (LD) is a HSE node for connecting one or more H1 Fieldbus segments to the HSE.


DFI302DFI302

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The Gateway Device (GD) is a HSE node for connecting one or more foreign network to the HSE.

GD


DFI302DFI302

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The Gateway Device (GD) is a HSE node for connecting one or more foreign network to the HSE.


DFI302DFI302 DFI302

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The Ethernet Device (ED) is a HSE node providing directly connected measurement/ control applications.

ED


DFI302DFI302 DFI302

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The Ethernet Device (ED) is a HSE node providing directly connected measurement/ control applications.


DFI302

DFI302DFI302DFI302 DFI302

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HSE as Open BackboneProprietary Control Network

CPU

.PS

HSEProprietary Ethernet

OSI Model

Ethernet

IPTCP/UDP

Application“User”

FF H1

Other

Ethernet

IPTCP/UDP

ProprietaryProprietary

ProprietaryProprietary

High Speed Ethernet

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Linking Device

100 Mbit/s Switch

HSE Host

H1

H1 Devices

Using Common 100baseT NIC(Software configured)

Using Common 10/100baseT Switch or HUB

Accessing H1 through the LAN-HSE

Using The Same Softwareto Configure Everything

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FIELDBUS H1 FIELDBUS H1

DEVICES ON DIFFERENT NETWORKS

Linking Device

FF BRIDGES BETWEEN FIELDBUS NETWORKS

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One Per Segment

LinkingDevice

LinkingDevice

Workstation

Workstation

Switch

LinkingDevice

Workstation

• Star-topology divides the network in segments with only one device each limiting impact of wire damage.

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Media Redundancy

Switch Switch

Switch

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RedundantMedia

RedundantDevice

H1 Fieldbus Devices

Switch A

Switch B

PLC

LinkingDevice A

LinkingDevice B

High Speed Ethernet Redundancy

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LD

SWITCH

LD

DUAL NODE LD

The system management can chck the status of the network and request the network to select a good component over a faulty one. This allow repair and replacement of failed components

Device Redundancy

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Workstationswith Dual NIC

Redundantdual portLinking device

Redundantsingle port

Linking device

Primary Switch Secondary Switch

Singledual port

Linking device

Complete Network and Device Redundancy

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Combo

Primary Secondary

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FFB is a “Wrapper” for an Application-specific AlgorithmExtends FB Model into Discrete Manufacturing

Examples:⇒ Multiple Analog Input - 8 Channels⇒ Multiple Analog Output - 8 Channel⇒ Multiple Discrete Input - 8 Channels⇒ Multiple Discrete Output - 8 Channels⇒ Application-specific Blocks - IEC 61131

Inputs Outputs

Flexible Function Block

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PLC CPU FF Interface

MDI

Flexible Function Block as Interface

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Fixed Algorithm and I/O

Basic Function Blocks

Analog InputAnalog Output Control SelectorDiscrete Input Discrete OutputPID ControlRatio Control

31.25 kbit/s H1 Fieldbus

Basic Process Control

Discrete Control CapabilityFlexible Algorithm and I/O

100 Mbit/s HSE Fieldbus

Flexible Function Blocks

Multiple Input/Output♦ 8 Channel Analog Input♦ 8 Channel Analog Output♦ 8 Channel Discrete Input♦ 8 Channel Discrete Output

Application Specific (IEC 61131)♦ Coordinated Drives♦ Supervisory Data Acquisition♦ Batch Sequencing♦ Burner Management♦ I/O Interfacing

Hybrid/Batch ControlDiscrete Control

Enterprise Integration


Advanced Function Blocks

Analog AlarmArithmeticInput SelectorIntegratorLead/LagSetpoint Ramp GeneratorSignal CharacterizerSplitterTimer

Advanced Process Control


100 Mbit/s HSE Fieldbus

Process Control Application Capability

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The HIST tests each host against a complete list of features that should be available in a Foundation Fieldbus host.

Host Interoperability Support Test

Host Already Tested:

•ABB Host•Centum CS - Yokogawa•DeltaV - Emerson•PlantScape - Honeywell•System302 - Smar

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Operation

Advanced Control

BasicControl

PlantInformation

Maintenance

Host Interoperability - Integration

FF H1Safety

ShutdownChromatograph

Compressors

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HSE Interoperability

• Host Interoperability• Subsystem interoperability

– basic control– emergency shutdown– paper quality control– advanced control– compressor, turbine control– etc.

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HSE Not The End of H1

• H1 used for field instruments• HSE used at the host-level• H1 and HSE complement each other

H1 HSESpeed 31.25 kbit/s 10 Mbit/s or 100 Mbit/sDistance (per segment) 1,900 m (1.2 miles) 100 m (300 ft)Two-wire Yes NoMultidrop Yes No (UTP)Bus-power Yes NoIntrinsically safe Yes NoRedundancy No YesDeterministic Yes Yes (with switches)

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Compelling Reason to Use HSE

• Only HSE has full network redundancy• Only HSE has device redundancy• Only HSE has a programming language• Built on standard Ethernet• Networking hardware are extremely low cost

compared to the proprietary.• Wealth of options for media available including

twisted pair, fiber optics and wireless.• Commercial and industrial grades from many

suppliers.

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Conclusion

• Use HSE to benefit fully from H1.• HSE simplifies the system architecture.• HSE makes Ethernet open.• HSE makes controllers interoperable.• Device and network redundancy is

required at the host-level.• HSE provides interoperable network and

device redundancy at the host level

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High speed backbone at 100 Mbit/s (1 Gbit/s future)Uses standard COTS Ethernet equipmentHSE field devices run standard function blocks

Flexible Function Blocks for Discrete ControlRedundant media and devicesInterface to other protocolsWire and fiber optic mediaLow cost, high performance electronics driven byinformation technology and Internet demand

High Speed Ethernet Summary

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High Speed Ethernet como substitutode todos protocolos industriais ?

• Vantagens HSE:– Custo– Grande número de fornecedores– Facilidade de comunicação: CSMA/CD

• Problemas:– Determinismo temporal (pior caso !!)– Taxa de comunicação vs. Taxa “útil” (detecção de colisões

exige tamanho mínimo)

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• Cálculo rápido• 10Mbps, com comprimento máximo de 2500 m, temos quadro mínimo

levando 51.2 microseg, o que leva a um comprimento mínimo = 64 bytes• Supondo que tenhamos que transmitir informação “on/off” (1 bit ou

adicionando-se correção e detecção de erros 3 bits)

• 3/(64*8) = 5.810-3, ou seja, considerando-se 10Mbps, taxa útil seria de 10 106 * 5.8 10-3 = 58 k bits / s

• Considerando 1 GBps (quadro mínimo de 6400 bytes) Taxa útil de 58 kbits/s (pois 1G = 100 * 10M, mas 6400 é 100 * 64 !!!)


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• Problemas:– Taxa de comunicação vs. Taxa “útil” (detecção de colisões

exige tamanho mínimo)

“Switched- Ethernet” não é solução ótima:– Alto custo– Grande aumento no número de componentes (manutenção,

instalação, ...)


Documents

High-Speed Ethernet (HSE)cpereira/CursoBarramentos_Novo/HSE.pdf · or more H1 Fieldbus segments to the HSE. High Speed Ethernet Architecture DFI302 DFI302 10 The Gateway Device (GD)