pepperl + fuchs, inc.: introducing wirelesshart with ethernet/ip gateway and add on profile
DESCRIPTION
WirelessHART is the only wireless standard approved for the process industry. This presentation will give an overview of the new WirelessHART technology and introduce the WirelessHART Ethernet/IP gateway and how it integrates into ControlLogix.TRANSCRIPT
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Copyright © 2014 Rockwell Automation, Inc. All Rights Reserved.
PUBLIC INFORMATION
Introducing WirelessHART with Ethernet/IP Gateway & Add On ProfilePepperl+Fuchs
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WirelessHART EtherNet/IP GatewayRobert Schosker - Product Manager
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Your Presenter
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ContentHART – General Characteristics
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HART signal
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Current
Time
1 0 0 01 1 1
4..20mA
1/1200s
1200Hz 2200Hz
-0.5mA
+0.5mA
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HART signal HART communication uses BELL 202 telephone
communication standard BELL 202 is a Frequency Shift Keying (FSK) technology Superimposed sine wave on conventional 4..20 mA signal Logic 1: 1200Hz Logic 0: 2200Hz
Communication speed is 1200kbps (1kBaud)
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HART signal
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4..20mA with 1mApp
240Ω
240mVpp
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ContentWired to Wireless HART
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From HART to WirelessHART
Wireless Commonly used in consumer
and office world Can be used in industry due
to technological progress Important: must be a standard
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HART Used since 25 years 35% of all field devices use
HART Lot‘s of DCS and AMS have
HART interface Standard in Process
Automation
WirelessHART
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From HART to WirelessHART Wireless is a new enhancement to the HART Technology Idea Keep the well known and proven protocol Change the physical layer from the modulated sine on the 4..20 mA loop
to radios and create the first wireless standard for PA
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From HART to WirelessHART Objectives An open and interoperable standard As easy as using wired HART Enable wireless access to existing HART devices Use the same configuration, maintenance, diagnostic tools and
procedures Require little additional training Worldwide usable Hardware (radios) must be available from the shelf
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Elements of WirelessHART As Radio Frequency the 2.4GHz ISM Band has been chosen
Advantages: Worldwide usable without any permission (some restrictions apply) Cheap and freely available hardware due to WLAN standard
IEC802.15.4
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Elements of WirelessHART
The Elements of WirelessHART are: Flat mesh network Network management Frequency hopping Time Division Multiple Access (TDMA)
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Mesh Network Topology
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Mesh Network All network
participants form a mesh The range Broken paths Self healing
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Network Management Network management The Network is organized and controlled by a central component, the
Network Manager The Network Manager
Forms the network
Determines the communication paths between all participants
Determines alternative paths and timings Newly added participants are added to the network automatically
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Frequency Hopping
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Distance of Channel Center Frequencies: 5MHz
Bandwidth of Channel: 2MHz
2,405GHz 2,480GHz
Frequency Hopping WirelessHART uses
15 Channels
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TDMATime
10ms 20ms 30ms 40ms 50ms 60ms 70ms 80ms 90ms
IEEE802.15.4 Channels
15:76543 Blacklisted
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TDMA All Synchronized 10ms time frame
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Building WirelessHART Networks
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NWID: OKJoin Key: OKJoin granted
NWIDJoin Key
A unique Network ID (user selectable)
Second WirelessHARTNetwork in parallel
A “Join Key” required
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Security and Integration of WirelessHART
WirelessHART is as usable as conventional HART products Therefore, also the layout of a communication structure does
not differ too much
All messages are encrypted with a 128Bit AES encryption key
The encryption keys are distributed and changed in certain intervals by the Network Manager
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Layout of wired HART structure
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Zone 1
DCS Maintenance
ERP
InterfaceInterface
Field Devices
Fieldbus
Network
SCADA
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Layout of WirelessHART structure
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Zone 1
DCSMaintenance
ERP
WirelessHARTGateway
Field Devices
Fieldbus
Network
SCADA
WirelessHARTGateway
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Wireless HART Products
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ContentWirelessHART GatewayWirelessHART Adapter
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WirelessHART Gateway
Includes network management, Access Point and Interfaces to Bus System
Redundant Power Supply Serves up to 250
WirelessHART Devices Zone 2/Div 2 Mounting Radio Approvals R&TTE FCC Other countries*
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WirelessHART Gateway
Ethernet with 100MBit/s Ethernet IP Hport IP Modbus TCP
RS485 with daisy chain capability HPort Modbus RTU
Web Server Interface AOP, DTM, and DD for HOST
Integration
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WirelessHART Adapter Upgrades conventional field devices
to be WirelessHART Battery supplies Adapter and Field
Device for autonomous measurements
Can serve up to 4 HART FDs General Purpose, Div 1, Zone 1,
and Div 2/Zone2 Radio Approvals R&TTE FCC Other Countries*
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WirelessHART Adapter Intelligent Power Management
allows for Battery Lifetimes up to up to 10 years User-settable burst interval FD is not powered in interval When interval is over, FD get’s powered,
value read out and send wirelessly FD the get’s unpowered again
Works with standard 4..20mA device (current conversion)
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Mounting of the Adaptor
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rotatable Adaptor
rotatableAntenna
Cable for4 … 20mA
signal(if required)
Due to rotatable adaptor and antenna, the antenna can be adjusted to the required position (horizontal, regardless of mounting position of field device)
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System Integration: Rockwell Software® Logix 5000™
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System Integration
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System Integration: AOP
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System Integration: AOP
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System Integration: AOP
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System Integration: AOP
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Need more information?
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Robert Schosker: [email protected]
Bernd Schuessler: [email protected]
Visit Pepperl+Fuchs at www.pepperl-fuch.us
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