Fieldbus Foundation's open, integrated architecture for information integration

“...dedicated to a single international fieldbus.”© 2003 Fieldbus Foundation

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Fieldbus Foundation's open, integrated architecture for information integration

Jonas Berge

SMAR

See Speaker Notes


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Second Generation Fieldbus System

Process

Execution(MES)

Control(PAS)

Instruments

Business(ERP)

Level 4

Level 3

Level 2

Level 1

Level 0

OPC Data Servers

Historian

Information Network

Business Network

Control Network

Device NetworkFieldbus

Ethernet

Ethernet

Ethernet

FF

FF

OPC

“web”

“web”

LinkingDevices

ISA-95


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Fieldbus (H1) Device Level

– Transmitters and analyzers

– Valve positioners

– Logic I/O

Unique Features– Bus power

– Intrinsically safe

– Long distance

– 2-wire

– Multidrop

– Control in the field


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Ethernet (HSE) Backbone of second generation FF systems

– Takes the place of RS485 and coax solutions

– For higher level devices• Linking device• Controller• Gateway• Remote I/O

Unique features– High speed

– “DCS style” redundancy

– FOUNDATION application layer

– FOUNDATION function block diagram programming language

FF throughout the system


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Interoperability Standard backbone Eliminates many gateways Interoperability for controllers etc.

Does for us what H1 did, but at a

higher level.


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Where will Foundation on Ethernet be Used? Gateways Operator consoles Linking devices Flow computers Controllers Device servers Barcode readers Single station loop controllers Paperless recorders Local operator panels Annunciators Ticket printers Weighing scales PLCs Remote-I/O (primarily high density

discrete)

Tank gauging systemsBurner management systemsCompressor controlsTurbine controls Corrosion monitoringEmergency Shut Down (ESD) system integrationFire & gas system integrationChromatographsGenerator set controlsLeak detectionPaper web scannerVibration monitoringPipe wall thickness monitoring

Some are already

available


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Where Else Will HSE Solutions Be Seen?Software

– Process visualization– Configuration tools– OPC servers– Bus analyzers– Network management– Tightly integrated online instrument

asset management

Networking Accessories– Switches– Routers– Wireless access points– Industrial cables and connectors


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Relation to OPC Software-to-Software OPC Foundation OPC server for HSE exists Permits non-HSE applications to access data

– Read/Write (DA)

– Capture (A&E)

– Link (DX)

Software gateway to other systems


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Relation to Web Technologies HTML/XML on HTTP/SOAP used in MES & ERP Firewall friendly Suitable for simple parameterization


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HSE Benefits and Savings


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Ethernet Benefits High speed

– 10 Mbit/s, 100 Mbit/s, faster

– Handles more information than other media

Well understood– Plenty of books

– Lots of experienced technicians

Many media options– Copper

– Optical fiber

– Short-range wireless

– Long-range wireless

– ADSL connectivity

– Dial-up connectivity

Multi-protocol– HSE

– Others

There are more Ethernet technicians in Austin than there are Fieldbus technicians

world wide.


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FF HSE Device& Ethernet Radio

Central Control RoomHost Computers

Ethernet Radio

FF H1 Instruments

Open IP and Ethernet SCADA Architecture


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HSE Fieldbus: Interoperable Ethernet Ethernet and TCP/IP is not sufficient for interoperability

– Most Ethernet solutions are proprietary

HSE is the standard application layer and user application Interoperability at the controller level Integration of package units


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Integrated System vs. System IntegrationTechnician’s nightmare:System Integration

Technician’s dream:Integrated System

LinkingDevice

HSE FieldbusProprietary on Ethernet and IP

RIO

H1 FieldbusAS-i

HART

VSD VSD

FlowComp.

Profibus-DP

Modbus

CPU

PS

FH1

ASi

HRT

DN

MOD

PDP

VSD VSD

FlowComp.

H1 Fieldbus

DeviceN

et

Ethernet

•Single tool•Single interface•Single wire rules•Homogenous•Distributed

No EDDLNo FDT/DTM


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Lower cost of purchase – Cheaper parts

– Less spare capacity

Engineering savings – Faster device and strategy selection

– Less documentation

– Easy to integrate with enterprise

– Easy to integrate subsystems

Construction savings – Less installation works

– Faster commissioning

– More possibilities

Lower cost of expansion and change– Scalability

– Easy to modify

– Protected investment

Reduced capital expenditure (CAPEX)


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Lower Cost of Purchase Cheaper parts

– Standard communications equipment

– Multiple HSE sources

Less spare capacity– Plug-in expansion makes installed spares unnecessary


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Engineering Savings Faster device and strategy selection

– Homogenous programming environment

– No data mapping

Less documentation– Homogenous naming convention

– No cross-reference lists

Easy to integrate with enterprise– Standard Ethernet and IP

– No proprietary gateways

Easy to integrate subsystems– Standard Ethernet connection

– Ideally HSE to eliminate data mapping


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Construction Savings Less installation works

– Easier than coax

– Lots of competing subcontractors

Faster commissioning– Well known tool and tricks: PING, sniffer

– HSE network status table

More possibilities– Available and affordable optical fiber solutions

– Ever more innovative products

– Radio instead of leased lines

– VPN over the public Internet


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Lower Cost of Expansion and Change Scalability

– Plug-in expansion

– No need to break or stop network

Easy to modify– Plug-in expansion

– No need to break or stop network

Single technology to worry about– Less complex dependencies than for mixed protocols

– Does not hinder improvements

Protected investment– Ethernet constantly developing

– Retains compatibility with installed base


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Reduced operational expenditure (OPEX) Operation savings

– Less process downtime

– Information access

– Less training

Maintenance savings – Market based replacement part and maintenance prices

– Single technology to support


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Information access– All plant areas integrated

– Automated data collection

– Intra-area control

– Set higher level control goals

Less training– Many already trained

– Standard IT training available

– Expect HSE courses to become available

Less process downtime– Industrial grade equipment

– Topologies designed for greater availability

– Complete device and network redundancy

Operations Savings


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Star Topology

LinkingDevice

LinkingDevice

Workstation

Workstation

Switch

LinkingDevice

Workstation

One device per wire reduces extent of shutdowns


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Ring Topology

Even less process disruption

Switch Switch

Switch


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Complete Redundancy Availability unmatched by other open Ethernet solutions

Workstationswith Dual NIC

Redundantdual portLinking device

Redundantsingle port

Linking device

Primary switch Secondary switch

Singledual port

Linking device


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Market based replacement part and maintenance prices– Multiple source for networking hardware

– Multiple sources for HSE devices

Single technology to support– Minimize media confusion of multiple bus technologies

Maintenance savings


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System integration or integrated system


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Standardize Don’t make new investments in diverse technologies

– Standardize on one technology

– Use “foreign” buses only to connect with installed base

To enable users to have a single bus in their plant... ...Manufacturers will have to support many options for bus for their

products Some HSE device types may not appear until manufacturers

understand users are serious about it.– May need to a corporate position/strategy paper


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Tower of Babel In most systems you can mix buses Mixed buses are hard to maintain

– Media

– Topologies

– configuration tools and methodology

– Tools

– Gateways/interface cards

Cost may outweigh benefits


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Diminishing Returns Adding another bus may not be worthwhile Additional buses primarily support cyclic I/O

– Don’t support e.g. EDDL or FDT/DTM for Profibus parameterization

– Rely on third-party tools or proprietary pages


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Mix Weak link Loss of integration

– Don’t support status propagation

– Different data types and object structure

FOUNDATION HSE

Linking DeviceControllerGateway Device

VSD

VSD

VSD


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Conclusion Core HSE products exist H1, HSE, and OPC are complementing each other, not competing Minimize other buses Get involved

– Interoperability demos

– HSE installation guidelines: grounding etc.

– HSE VLAN practices

– OPC profile

– System level value files


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Where Can I Learn More? Title: " Fieldbuses for process control:

Engineering, Operation and Maintenance"

Author: Jonas Berge Publisher: The Instrumentation,

Systems and Automation Society (ISA)

ISBN 1-55617-760-7

Context:•Introduction•Benefits & Doubts•Installation & Commissioning•Configuration•Integration & Migration•Troubleshooting•Operation•Design & Engineering•Maintenance•Availability & Safety•How Fieldbus Works

Fieldbus Foundation's open, integrated architecture for information integration

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