pepperl-fuchs: introducing wirelesshart with ethernet/ip gateway and add-on-profile

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Pepperl+Fuchs Introducing WirelessHART with EtherNet/IP Gateway and Add-On-Profile

Robert Schosker

Product Manager - Pepperl+Fuchs

June, 2015

www.pepperl-fuchs.com

WirelessHART EtherNet/IP Gateway

Robert Schosker - Product Manager


Your Presenter

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3


Content

HART – General Characteristics

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4


Superimposed HART signal

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Current

Time

1 0 0 0 1 1 1

4..20mA

1/1200s

1200Hz 2200Hz

-0.5mA

+0.5mA


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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Connection Methods

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4..20mA with 1mApp

240Ω

240mVpp

Gerrit Lohmann / Thomas Klatt 20.03.2008


Content

Wired to Wireless HART

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8


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



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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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


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


TDMA Time

10m

s

20m

s

30m

s

40m

s

50m

s

60m

s

70m

s

80m

s

90m

s

IEEE802.1

5.4

Channels

15

:

7

6

5

4

3 Blacklisted

2

1

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TDMA

All Synchronized

10ms time frame


Building WirelessHART Networks

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NWID: OK

Join Key: OK

Join granted

NWID

Join Key

A unique Network

ID (user selectable)

Second

WirelessHART

Network in parallel

A “Join Key”

required


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

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All messages are encrypted with a 128Bit AES encryption key

The encryption keys are distributed and changed in certain intervals by the Network Manager


Layout of wired HART structure

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Zone 1

Control Maintenance

ERP

Interface Interface

Field Devices

Fieldbus

Network

SCADA


Layout of WirelessHART structure

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Zone 1

Control Maintenance

ERP

WirelessHART

Gateway

Field Devices

Fieldbus

Network

SCADA

WirelessHART

Gateway


Where can it be used?

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Where can it be used?

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Where can Wireless HART be used?

Oil & Gas Refineries

Continuous process Facilities

Offshore platforms

Pharmaceuticals

Mobility

Waste Water


Wireless HART Products


Content

WirelessHART Gateway

WirelessHART Adapter

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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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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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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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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

rotatable

Antenna

Cable for

4 … 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)


System Integration: Rockwell Automation

Studio 5000™


System Integration

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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

mailto:[email protected]






http://www.pepperl-fuch.us/



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www.rockwellautomation.com

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pepperl-fuchs: introducing wirelesshart with ethernet/ip gateway and add-on-profile

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