1 Ff Basics With Additional Points

7/29/2019 1 Ff Basics With Additional Points

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1 Freedom to Choose. Power to Integrate.1 Freedom to Choose. Power to Integrate.

Freedom toChoose. Power to

Integrate.

FOUNDATION Fieldbus

Fieldbus Basics


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Topics

FOUNDATION fieldbus Architecture H1 Overview

H1 Technology High Speed Ethernet (HSE) Overview


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Integrate.

FOUNDATION fieldbus

Architecture


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What is Fieldbus? A fieldbus is an all-digital, serial two-way, multi-drop

communication System.

H1 (31.25kbps) interconnects field equipment (Sensors,

Actuators & I/O). HSE (High Speed Ethernet, 100mbps) provides

integration of high speed controllers, subsystems (via

Linking Device) and data servers and workstation.


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Integrated Architecture

Management Information Systems (MIS),Enterprise Resource Planning (ERP), and

Human Machine Interface (HMI) access the H1Fieldbus information via the Data Servers.

Business Enterpriseand

Plant ApplicationPackages

H1 and HSE

Factory/PlantInstrumentation andControl devicesH1-Fieldbus

HSE Network

MISERP

HMI


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Integrate.

H1 Overview


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Multiple Variables Fieldbus allows multiple variables from each device to be brought

into the control system for archiving, trend analysis, processoptimization, reporting, predictive maintenance and for assetmanagement.

Fieldbus distortion-free characteristics digital communication enablesimproved control capability which can improve product yields.

Traditional 4-20mA and on/off One Variable (One Direction)

PV

Control System Network

4-20mA

HSE

H1

Fieldbus Multiple Variables (Both Directions)

Analog Controller Fieldbus Controller

PV , Mode , Variables , Alarm

Diagnostics , EtcI/O Subsystem


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8 Freedom to Choose. Power to Integrate.8 Freedom to Choose. Power to Integrate.Fieldbus Extends View to Field InstrumentTraditional 4-20mA View stops at I/O Subsystem

PV


4-20mA

HSE

H1

Analog Controller Fieldbus Controller

PV , Mode , Variables , AlarmDiagnostics , Etc

I/O Subsystem

Diagnostics

Self Diagnostics and communication capabilities ofmicroprocessor based fieldbus devices helps reducedowntime and improve plant safety.

Plant operation and Maintenance personnel can benotified and corrective actions taken quickly and safely.


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Control Strategy Standard Function Blocks is used to implement the Control Strategy. Many control system functions such as AI, PID and AO can be

performed by the field device through the use of these StandardFunction Blocks.

Distribution of control into field devices can reduced the amount ofhardware and cabinet footprint needed.

Fieldbus Extends Control and I/O to Field InstrumentTraditional Control and I/O requires extra hardware


PID

AI AO

PV

4-20mA

Analog Controller

I/O Subsystem

HSE

H1

Fieldbus Controller

PV , Mode , Variables , Alarm

Diagnostics , Etc

AI AO PID


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Integrate.

H1 Technology


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H1 Physics Multi-Drop wire pair with Power and Signal on same cable. Support Intrinsic Safety. Function Blocks built into Field Devices. Control on the Wire single loop integrity Distance up to 1900 meters Add Repeaters to extend > 1900 meters

Max. of 4 repeaters can be used to a maximum distance of 9500meters

HSE

H1Digital Signal

1900 meters

R

Distance > 1900 meters

H1 Digital Signal

Fieldbus Signal


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Intrinsic Safety

Control room Field

T

Trunk

Wiring block

Field device

Powersupply

HostControl

System

Conditioner T

I.S Interface

I.S certified devices

I.S certified devices


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EDDL and CFF Files

Field Devices will consists of: Actual Physical Device. Device Description (DD).

Common File Format (CFF). DDs and CFFs made by the

Device Supplier

Parameters and Capabilities

are defined in device files DD and CFF Defines how device shall be

displayed in the system

ConfigurationSystem

H1 Network

DD & CFF

Instrumentsdescribed with

Device Description

Language

www.fieldbus.org


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DD and CFF Files

Device Descriptor (DD) File allow operation ofdevices from different suppliers on the same

fieldbus with single host system. Common File Format (CFF) is a file which

describes the functions and capabilities of a field

device. The CFF file is used in conjunction with the

Device Descriptor file to enable a host system to

configure the system off-line. CFF files are standard ASCII text file.


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Typical Fieldbus Installation

An example of the Chicken foot(tree) topology.

Redundant, isolated power

conditioning defined Typically 10-12 bus-powered

fieldbus devices per segment.

120 m distance from FF JB to FF

Device

Spur short-circuit protection.

Up to 1900 meters.

Maximum of 9500 meters viarepeaters.

PCPowersupply

T

PCPower

supply

T

2Bu

TrunkSpur

FieldDevices

Control System (Host)Fieldbus Interface Module

DOFC


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Fieldbus Components

WorkstationWorkstation HMIHMI

TerminatorTerminator

Power SupplyPower Supply

Junction BoxJunction Box

H1 Bus Wire (Spurs)H1 Bus Wire (Spurs)

ConditionerConditioner

Actuator ValveActuator Valve

Fieldbus Interface ModuleFieldbus Interface Module

TerminatorTerminator

H1 Bus (Trunk)H1 Bus (Trunk) Hazardous Area (Field)

Safe Area (Host)Fieldbus Controller

AnalyzerAnalyzerTransmittersTransmitters


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Resource Block The Resource Block describes characteristics of the fieldbus device

such as device name, manufacturer and serial number, etc. There is only one Resource Block in a device.

Control Builder Project tab

FIM H1 link interfaces

Device

Device

Resource block

Transducer block


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Transducer Block Transducer Blocks are used to configure devices.

Transducer Blocks are required to Read sensors valueand command output value.

Control Builder Project tab

FIM H1 link interfaces

Device

Device

Resource block

Transducer block


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Function Blocks The Control System Strategy is built using Function Blocks.

Input and output parameters of Function Blocks can be linked overthe fieldbus.

The execution of each Function Blocks is precisely scheduled andthere can be many function blocks in a single user application.

AI Block PID Block

AO Block


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Standard Function Blocks

Function BlocksFunction Blocks

Analog Input

Analog Output

Bias/Gain

Control Selector

Discrete InputDiscrete Output

Manual Loader

Proportional/Derivative

Proportional/Integral

/Derivative

Ratio


Device Control

Output SplitterSignal Characterizer

Lead Lag

Deadtime

Integrator (Totalizer)

Setpoint RampGenerator

Input SelectorArithmetic

Timer

Analog Alarm


Multiple Analog Input

Multiple Analog Output

Multiple Discrete Input

Multiple Discrete Output


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AI Block PID Block

AO Block

HSE

Fieldbus Controller

PID

AI

AO

H1 Fieldbus

Example of a complete control loopusing Function Blocks located in fieldbus Devices.

Example of a complete control module strategyControl on the Wire.

Example of a Control Loop Control Strategy can be built using Function Blocks built into field

devices.

A simple temperature transmitter may contain an AI function block. AControl Valve might contain a PID function block as well as the

expected AO Block. Thus, a complete control loop can be built using a simple transmitter

and a control valve. Control in the Field does need a Controller.


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H1 Link Master Redundancy

Two types of devices:Link Master

Capable of becoming Link Active Scheduler (LAS).

Basic Device

Link Master Device are

BKUP LAS

PRIM LAS

BASIC Device


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H1 Link Active Scheduler PID Loop scheduled and unscheduled

communication.

AI 110

Scheduled Unscheduled

Closed loop control Alarms/EventsMaintenance/Diagnostic InformationProgram InvocationPermissives/InterlocksDisplay Information

Trend InformationConfiguration

loop 110 period of execution

PID 110

AO 110

Function Block Execution

Scheduled Communication

Unscheduled Communication

Function blocks:


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Link Schedule


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Integrate.

High Speed Ethernet (HSE)

Overview

FF I t t d A hit t


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HSE High Speed Control andIntegration Backbone

APPLICATIONPACKAGES

MIS

P

L

P

L

P

L

P

L

Data Servers

LDLD

FF Integrated ArchitectureHSE Subsystem Integration High Performance Control Backbone Standard Ethernet Equipment and Wiring Standard Function Blocks PLUS

Flexible Function Blocks for

Discrete/Batch/PLC Redundant HSE Interfaces and Devices Linking Devices (LD) Integrate H1

HSE Provides the Open Interface for Data

Servers


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MIOinside

H1P

L

Plant

P

L

Plant

P

L

Plant

H1 H1

HSE Client

100 Mbit/sSwitch

LinkingDeviceHSE

Field Device

Gateway

I/O Network

High Speed Ethernet Devices


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H1P

L

Plant

P

L

Plant

P

L

Plant

H1 H1

HSE Client

LinkingDevice

HSEField Device

Gateway

I/O Network

HSE - LAN Redundancy


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H1P

L

Plant

P

L

Plant

P

L

Plant

H1 H1

HSE Client

LinkingDeviceHSEField Device

Gateway

I/O Network

HSE - Device Redundancy


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Additional Points

FOUNDATION fieldbus is tried and tested since 15 years Only FF supports temporary master like handheld or laptop 8 channel temperature transmitters replace 8 regular transmitters

Fieldbus electric actuators eliminate 6-12 pair of wires Only FF supports firmware upgrade instead of circuit replacement FF provides closed loop digital control: sensor to actuator Fieldbus provides flexibility to add devices to the bus Fieldbus provides flexibility to use additional signals in the device Fieldbus eliminates proprietary MOV bus No need to change I/O card type when device type is changed FF integrates gas chromatograph in asset management software Fieldbus is made easy thanks to wizards and EDDL etc.

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