fieldbus foundation – india marketing committee fieldbus ......ff interface solution – block...

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© 2008 Fieldbus Foundation

2008 FFIMC - Automation 2008-Mumbai

Lars MickanSofting AG

Fieldbus Foundation – India Marketing Committee

Fieldbus FoundationParadigm Change in Instrumentation Technology

FF Software / Hardware device integration

Date : 26th of September, 2008 (Friday) Time : from 09:00 am to 06:00 pm. Venue : Automation 2008 Conference Hall.

: Conference Hall, Bombay Exhibition Centre (NSE), Goregaon (East), Mumbai INDIA

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Structure

- Introduction – Motivation

- Requirements on Field Devices Integration

- Hardware Solutions for FF Interface

- Software Solution MODBUS/HART mapping

- Ready-made Example of FF Interface

- Summary

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Structure






- Summary

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Introduction – Motivation

- Foundation Fieldbus Technology is a Standard in Process Automation

- Still other „old“ fashion technology's (4..20mA or HART) available in the market

- How will it possible to use current field device hardware with advantages of FF ?

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Structure






- Summary

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Requirements on Field Devices Integration

- Hardware development of FF interface

- Adaptation of communication stack to new hardware

- Integration of application software

- Electrical conformance test (EMC, Ex, Physical layer)

- CTK, ITK and host conformance tests

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Step 1:License hardware schematics and develop fieldbus Interface hardware including ex requirements

Step 2:Produce Prototypes and submit them to stack supplierStack supplier implements stack and function blocks

Step 3:Integration of device application and connection to devicePre-certification

Step 4:Final tests and product launchCertification

today

4-6 months

6-9 months

App.12 months

Project Schedule –„Traditional way“

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Required Test of new Fieldbus Hardware

Physical Layer Test- Test of fieldbus hardware based on requirements of physical layer of

Foundation fieldbus- A successful test is necessary to get a device certification

CTK Conformance Test - Based on FOUNDATION fieldbus conformance test kit- Will be done by test lab of Frauenhofer ITB in Karlsruhe

ITK Interoperability Test - Test of interoperability to other FOUNDATION fieldbus devices- Will be done by test lab of FOUNDATION fieldbus in Austin

Proven application with to major host systems

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Project Schedule –„Rapid way“

Today: Step 1:

1-2. month Step 2:

3-4. month Step 3:

Submit specification of service application (e.g. HART-Commands)

Hardware integrationCustomizing of software and templatesConfiguration files generation

Precertification (only ITK necessary)DeliveryCertification to follow

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Comparison of different Approaches

-++++RapridApproach

++----Traditional Approach

Device CostSystem Performance

Development Time

Development Cost

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Structure






- Summary

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FF Interface Solution - Scenario #1

Sensor / ActuatorBoard

HARTInterface

Existing Field DeviceNew Field Device

Sensor / Actuatorand FF Module

one board – one processor

„Traditional“ way of Field Device Integration

- One Processor System- Design of new PCB (Schematics)- Re-run of all certification test

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HARTInterface

Existing Field Device


New Field Device

FF Interface Module

„Rapid“ way of Field Device Integration by using serial interface

- Using of Actor / Sensor board- Serial communication MODBUS RTU- Only ITK certification test necessary

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HARTInterface

Existing Field Device


HARTInterface

New Field Device

FF Interface Module

„Rapid“ way of Field Device Integration by using HART interface

- Using of Actor / Sensor board- Mapping of HART commands to FF- Only ITK certification test necessary

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Summary of the Scenarios

--+++Scenario #3Rapid wayHART Interface

-++-Scenario #2Rapid waySerial Interface

+++----Scenario #1Traditional way

Device CostSystem Performance

Development Time

Development Cost

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Structure






- Summary

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FF Interface Solution – MODBUS/HART

The FF interface module has to have a built in MODBUS rsp. HART Master-Slave communication module

Modbus / HART handling supports the following communication strategies:

- cyclic read, cyclic write- acyclic read, acyclic write

To do:- Define Modbus locations / HART commands- Define access pattern (cyclic / regular / acyclic) for

transactions

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Modbus / HART Scheduler

Acyclic command Cyclic commands Regular commands

Request List

read process value read parameter Aread parameter Bread parameter D

write parameter C

read process valueread parameter A

read process value

write parameter Cread process valueread parameter B

FF Interface Solution – MODBUS/HART

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Structure






- Summary

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FF Interface Solution – Block DiagramX2

Fieldbus

IEC61158-2 H1Fieldbus Foundation

Digital Unit

Micro Controller M16C

Fieldbus ControllerUFC100

MAU

Medium Attachment Unit

Protection

FBK

I2C memory interface

Jumper

configurable IO

DI/DO/AI/AO

6.3VPower Output

3.15VPower Output

Serial Interface

M16C Progamming

Interface

X1User

Interface

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Low Power Design – Intrinsic safety

- FOUNDATION fieldbus is able to provide power over bus

- 2- or 4-wire designs are possible

- The available bus power depends on different conditions (devices, cable, …)

- Lower total power consumption:Less development efforts regarding intrinsic safeLess effort for bus or power cablingLess hardware cost (cheaper components, design without galvanic isolation)

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Fieldbus Kit FBK2 - Example of FF Interface- Easy FF integration of existing field devices

with HART- or serial interface

- Compact size makes it ideally suited for installation in most existing device housings

- Pre-certified for hazardous areas (ATEX certificate)

- Connection to field device via: UART, I²C or SPI

- Programmable AI/AO and DI/DO

- Ready-made templates allow quick customization to HART commands

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Structure






- Summary

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Summary

- Any traditional field devices can become a FF field device

- A ready-made FF interface can reduce the development and test efforts

- Software adaptation for device specific commands will be still necessary

- Pre-Certified FF interface hardware is available

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Thank You for Your Attention!

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