This document discusses smart instrument standards and digital technologies for industrial fieldbus systems. It provides an overview of common fieldbus protocols including HART, Profibus, Foundation Fieldbus, AS-I, and DeviceNet. Advantages of using fieldbus over traditional 4-20mA wiring are presented, such as wiring, hardware, documentation and engineering cost savings. Considerations for selecting the appropriate fieldbus based on technical requirements and business needs are outlined. Foundation Fieldbus and Profibus protocols are described in more detail. The role of Ethernet and TCP/IP in industrial communications is also discussed.

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The Nuts and Bolts
of smart instrument
standards
By
Steve Mackay

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Presented by :
Steve Mackay PhD
Dean of Engineering
of the
Engineering Institute of
Technology

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EIT Micro-Course Series
• Every two weeks we present a 35 to
45 minute interactive course
• Practical, useful with Q & A
throughout
• PID loop Tuning / Arc Flash
Protection, Functional Safety,
Troubleshooting conveyors
presented so far
• Upcoming:
– Electrical Troubleshooting and
much much more…..
• Go to
http://www.eit.edu.au/slideshare
• You get the recording and slides

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Digital Technologies- Summary
Ethernet
Knowledge
Base
HART
FF
Profibus PA
Profibus DP
Devicenet
AS-I
PriceAcceptanceField
Intelligence
EaseBus
(Slide compliments of Emerson)

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Generic Fieldbus Advantages:
Let’s Take Off!
• Wiring savings
• Hardware savings - fewer devices (instruments barriers and I/O)
• Documentation savings - Simpler layout and drawings
• Reduced Engineering costs
• footprint savings
• Multi-variable field devices
• Interoperability and freedom of choice
• Reduced Commissioning and startup costs
• Reduced downtime
• Integrity improved
• DCS future capacity savings

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“Footprint” Space Savings
Before- 256 I/O Fieldbus -4000 I/O
(Slide Compliments of Emerson & Jim Russell)

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Which fieldbus to Select?
There is ONE RIGHT fieldbus for YOU
Engineer must decide based on: Technical Profile, budget, NPV
including LONG TERM COST OF OWNERSHIP
Business Requirements
DISCRETE - Bottling plant would be mainly discrete-most effective solution
ASi- Same may be the case for building automation
DISCRETE+CONTINUOUS - Motor Vehicle Manufacturing Plant or Electrical
Motor Control Centre- Profibus DP
CONTINUOUS PROCESS PLANT - Hybrid approach likely- MCC (Profibus DP),
PLCs (Modbus) and CPP Foundation fieldbus or Profibus PA.
(Foundation fieldbus is being selected by major CPP Operators because of its
advanced features)

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Foundation Fieldbus
PHYSICAL LAYER WIRE MEDIUM
H1 & HSE APPLICATIONS
SCADABRIDGE
H1
ANALYZER
PLC
H1… Lower Speed Fieldbus
• 31.25 Kbps
• Replaces 4 to 20 mA
• 2 - 32 Devices
• Power & Communications
• Intrinsically Safe
• Twisted-pair
• 1900 m length
PLC
SERVER GATEWAY
ETHERNET
HSE
HSE… High Speed E t h e r n e t
• 100 MBps

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FIELDBUS CASCADE CONTROL
Playing Lego

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Profibus
CNC
PC/VME
VME/PC
PLC DCS
Area
Controller
Ethernet/TCP/IP TCP/IP/Ethernet
PROFIBUS-FMS
PROFIBUS-DP PROFIBUS-PA
Factory
level
Bus Cycle
Time
< 1000 ms
Cell
Level
Bus Cycle
Time
< 100 ms
Field
Level
Bus Cycle-
Time
< 10 ms

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ETHERNET AND
TCP/IP

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Ethernet – The New “RS-232”
for Process Control
• Ethernet has become the preferred method to
connect controllers from competing vendors.
PLC Network
DCS
PLC
Ethernet
DCS Network

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Thank You For Your Interest
If you are interested in further training, please visit:
http://www.idc-online.com/slideshare