industrial wireless communication

Welcome to PHOENIX CONTACT

What can wireless do for you?

Stewart WilsonProject EngineerCentral Region815-274-5049

2 | Presentation | Ira Sharp | 20 April 2010

Agenda

Why Use Wireless?What Is Wireless? License vs. Unlicensed Spread Spectrum Public vs. Proprietary ISM BandsWi-Fi 900 MHz Proprietary UHF Radios GSM/GPRS Cell Phone Antennas & accessories Installation design & System best

practices


Why wireless?

It can solve application challenges


Why wireless? When logistics and terrain make wired solutions impractical or cost effective.


Using Wireless in Industrial Applications Wireless has become a standard in

everyday life Commercially, for convenience Industrially, to solve problems


Using Wireless in Industrial Applications Wireless has become a standard in

everyday life Commercially, for convenience Industrially, to solve problems

Developments in industrial wireless are accelerating very rapidly New technologies are in development Standards are being created

specifically for industry


RF Radios control the roof on the new Dallas Cowboys Stadium


Perimeter Surveillance ApplicationWaste Water Treatment Plant (WTP)


Benefits of Wireless in Industrial ApplicationsLower installation costs (than wired

solutions)Labor savingsPermits and delaysMaterial cost

Faster installation vs. traditional cablingReduced down times

More application flexibility


Consider Wireless Technologyfor today’s industrial challenges

Cost

Distance1000 ft

Cost of Wires + Installation can = $10 to $1000+ / foot

$1325

$10000

$40000

1 mile


What Makes Wireless Technology Industrial?

Reliability Must be as reliable / more

reliable than wire? Latency appropriate for

application.

Security Prevent malicious use from

intruders Prevent malicious jamming of

frequencies

Rugged Easy setup and installation. Able to operate in an industrial

environment.


FCC Operating Guidelines

Low Band 25-50 MHz

Mid Band 66-88 MHz72-76 MHz (in USA)

VHF Band 132-150 MHz150-174 MHz

220 Band 220-225 MHz(220-222 MHz)

UHF Band 406-430 MHz450-470 MHz470-512 MHz

Trunked andConventional 800 MHz

Cellular 800/900 MHz

Spread Spectrum 902/928 MHz2400-2483.5 GHz 5725-

5850 GHz

900 MHz Pt to Pt928/952 MHz(932941 MHz)

960 MHz Pt to Pt 960 MHz

Pt to Pt MicrowavePCN Networks

2000 MHz

(2 GHz)


Radio Frequencies have many applications:

LF low frequency

MF multi frequency

HF high frequency

VHF very high frequency

UHF ultra high frequency

SHF super high frequency

EHF extremely high frequency

VLF very low frequency

MoIndustrial Devices work m

Most Industrial radio modems use UHF and some VHF frequencies for long range data communications

e.g. for supervision and control of power distribution networks and other SCADA and automation applications.

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transmitters

802.11 (a, b, g etc)Wi-Fi standardsProprietary

wireless

UHF

Remote

802.11 (a, b, g etc)

802.11 (a, b, g etc)

Kbps

D

ata

Rat

e

M

bps

Mile

sD

ista

nce

10

0’s

of ft

UHF WirelessUHF

Industrial Wireless Communication Solutions(Application Space Matrix)


License-free RF: Uses a low power radio frequency transmitter to send data through the air

Consider Wireless TechnologyWireless Options

Licensed RF: Uses a high power radio frequency transmitter to send data through the air


Licensed vs. UnlicensedLicensed Unlicensed

Requires user to purchase a license No license required

Very low to no interference Much more interference

Very low thru-put when interference occurs

Little effect on thru-put with low amounts of interference

Higher power can be used this can result in greater distances

Does not allow for high power transmissions


900MHz vs.

2.4GHz vs.

5GHz2.4GHzAdvantages:• Higher bandwidth allows large data transfer, speed • Components are smaller, cheaper

Disadvantages:• Congested band due to abundance of Wi-Fi, Bluetooth, microwaves, cordless phones • Attenuates much more quickly, will not pass through metal

900MHzAdvantages:• More robust, less prone to interference• Lower attenuation, travels further through more obstacles

Disadvantages:• Low bandwidth prevents large data transfer, speed• Components are larger at lower frequencies

5GHzAdvantages:• Higher bandwidth allows large data transfer, speed • Less congested, few RF devices in this band

Disadvantages:• Low transmit power limitations• High attenuation in cables, requires very high gain antennas

ISM Bands - Industrial, Scientific and Medical


ISM Frequency Bands (in North America)

Lower Frequencies: propagate further penetrate objects better

2.4GHz: used by microwave ovens

(rain fade issues) is license free around the

world congested band higher throughput

5.8GHz brand new ISM band low transmit power allowed

5.8GHz

900MHz

2.4GHz


Industrial Wireless Usage

Users have more options for wireless technology and product features than ever before

”Which one for what purpose?”

Ana

log

Dig

ital

I/O

802.15.4 BasedFrequency: 2.4GHz

Speed: 250kbpsRange: <30m

BluetoothFrequency: 2.4GHz

Speed: 1MbpsRange: <100m

GSM/GPRS Frequency:

850/900/1800/1900MHzSpeed: 250kbps

Range: <30m

ProprietaryFrequency: 900MHz/2.4GHz

Speed: Varies, <1MbpsRange: Varies, <20km

LicensedFrequency: 100-400MHz

Speed: Varies, <19.2kbpsRange: +20km

WiFi (802.11a/b/g)Frequency: 2.4/5GHz

Speed: 54MbpsRange: 100m

Ente

rpris

e

Ethe

rnet

N

etw

ork

SCA

DA

Et

hern

et

Net

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Seria

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Wireless FundamentalsThis is faster? ….. but is it better?


…. this may be (better)?

Wireless Fundamentals:

Faster ..Yes !


The Energy per Bit Equation

We can “conceptually” show how E/Bit affects how far different radios will “go” in an industrial setting.

9600bps

1 Watt TX

115kbps

1 Watt TX>

Typical Spread Spectrum I/O radio compared to a higher speed SCADA radio with same transmit power

dd

Eb =Baud RateTX Power


ISM License Free Spread SpectrumRules

Manufacturer gets FCC approval – not you!

FCC Rules for Part 15.247

Doesn’t cause interference

Live and function with interference

Part 15 gets recognition by FCC

Operates in 900, 2400, 5800 MHz bands

Military technology applied to industrial, commercial, and consumer application


What is Spread Spectrum

A method of transmitting a signal by "spreading" it over a broad range of frequencies much wider then the minimum bandwidth needed to transmit

BenefitsReduces power needed to transmit informationIncreases transmit speed Can allow multiple networks to exitsReduces the effect of interference


How do these characteristics affect Energy per Bit and distance?

DSSSDirect SequenceSpread Spectrum

• Uses wide RF band• Typically moves many bits per second

(802.11 WLAN Ethernet radios move many bits per second)

FHSSFrequency HoppingSpread Spectrum

• Uses narrow RF band• Typically moves fewer bits per second

(Wireless Interface devices moving small packets of I/O data move very few bits per second)

Remember, Spread Spectrum radios come in “two flavors.”


• License Free (FCC part 15)

• 1 watt power max

• 900MHz, 2.4 GHz, 5.8 GHz bands

..but ISM demands the use of one of the Spread Spectrum Technologies

• Direct Sequence• Frequency Hopping

Industrial/Scientific/Medical (ISM) Radio Bands – License Free

• OFDM


Direct Sequencing Spread Spectrum - DSSS

DIRECTSEQUENCE

BACKGROUNDNOISE

BANDWIDTH

RFPOWER

FREQUENCY


Data Bit DATA

Code Word DS Code15, 63 or 127 “chips” long

SPREADDATA

Transmitter

DATA

SameDS Code

Receiver

Frequency

The Direct Sequencing - Physicsof Spread and De-spreading Data

DE-SPREADDATA

Sign

al S

tren

gth

Sign

al S

tren

gth


1 Watt of power “spread” across wide bandwidth

902MHz 928MHz

1 Watt

0 Watt

Bandwidth (MHz)

TransmitPower(Watts)

Interference

The Direct Sequence & Interference


FHSS Wireless I/OProprietary Wireless Inherently Secure Only known by the manufacture

Designed for specific applications I/O to I/O communication

– Long distance (1,000’s of feet to miles) Serial Data (RS-232/422/485)

– Long distance (1,000’s of feet to miles)

A number of Mfgs incorporate proprietary FHSS technology: 900MHz, Bluetooth, 802.11, 802,15, etc. frequencies


Spread SpectrumFrequency Hopping

FREQUENCYHOPPING

WAVE

DIRECTSEQUENCE

BACKGROUNDNOISE

BANDWIDTH

RFPOWER

FREQUENCY

Concentrates power in very narrow signal

Hopping in random pattern 100 times/sec

Frequency HoppingHopping in pseudo

random pattern. Therandom pattern can be 100 times/sec


Frequency Hopping & Interference

902MHz

928 MHz

Interference may knock an update down, but other transmissions will get through.

928 MHz


Spread SpectrumFrequency Hopping vs. Direct Sequence

FREQUENCYHOPPING

WAVE

DIRECTSEQUENCE

BACKGROUNDNOISE

BANDWIDTH

RFPOWER

FREQUENCY

Concentrates power in very narrow signal

Hopping in random pattern 100 times/sec

Frequency Hopping Direct Sequence“Slices” transmission into small coded bits

Utilizes wider signal channelEach has it’s own application advantages.

Is the need for transmitting large Data or IP Packets ? ….or simple serial and I/O signal ?


Wireless: Performance Vs Distance- How far will it go?


Wireless: Performance Vs Distance- A wireless network is only as good as its weakest link !


How far will industrial wireless devices go?R

ecei

ved

Sign

al S

tren

gth

ReceiverThreshold

No

Wor

ry Z

one

Com

mon

Sen

se Z

one

Per

form

ance

Zon

e

This is where it just works, every time, out of the box!

Performance Zone- Path engineering required - Wireless conduits up to 20+

miles

Common Sense Zone- Success with experience - Wireless conduits up to 1/2

mile

No Worry Zone- The “Electrician’s Territory” - Wireless conduits up to

1000 feet


Public and Proprietary Systems

Public Standard- A governing body exists to create/certify a specification to guarantee interoperability between manufacturer’s devices Radio “language” is known Equipment is readily available Encryption is the only protection Examples: 802.11, Bluetooth, Zigbee

Proprietary System- The manufacturer controls the design so that the product will only work with other devices from that manufacturer Non public air interface Equipment available to “insiders” Un-known technology is a significant barrier Encryption helps Examples: Phoenix RAD-ISM-900


Public Systems

Public systems can talk to similar devices from the same manufacture

and can talk to other manufactures devices

Interoperability

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Public and Proprietary Systems

Public Standard- A governing body exists to create/certify a specification to guarantee interoperability between manufacturer’s devices Radio “language” is known Equipment is readily available Encryption is the only protection Examples: 802.11, Bluetooth, Zigbee

Proprietary System- The manufacturer controls the design so that the product will only work with other devices from that manufacturer Non public air interface Equipment available to “insiders” Un-known technology is a significant barrier Encryption helps Examples: Phoenix RAD-ISM-900


Proprietary Systems

RS485

RS232

DATA (w/ I/O)

Other manufactures products will not work with other proprietary systems


“TRADITIONAL” NETWORK STRUCTURE

• The proprietary radios can co-exist with other radios in a concentrated area

• Hop sequences are different in every radio group

• Network ID, Security ID, RF band keep networks separated


CELLULAR NETWORK STRUCTURE

• Radios that operate on a standard (like Bluetooth) will use the same hop patterns

• Each network must be physically separated

• Network ID, Security ID, RF Power keep networks separated


900 MHz Unlicensed Radio Types:Unidirectional & I/O

902 – 928 MHz FHSS & DSSS 1 Watt transmitter Transmits:

– 1 analog (4-20mA)– 2 digital (5-30VDC)

Factory matched pairs (transmitter/receiver)-No Programming! 600-1,000ft range out of the

box Point to point or signal

splitting configurations


900 MHz Unlicensed Radio Types:Bidirectional & with I/O 902 – 928 MHz FHSS & DSSS 1 Watt transmitter Transmits (both directions):

– 1 analog (4-20mA)– 2 digital (5-30VDC)

Factory matched pairs (transceivers) or custom configuration options for point to multipoint applications-No Programming! Expandable I/O digital and analog

modules and special function modules 600-1,000ft range out of the box


900 MHz Unlicensed Radio TypesRS232/422/485 Serial Data and I/O 902 – 928 MHz FHSS & DSSS 1 Watt transmitter Transmits RS232/422/485

Data– 1 DB9 connection– 4-pos. screw connector

Connect Expansion I/O Modules– Becomes simple wireless remote I/O– I/O points are addressable via Modbus

RTU or Allen-Bradley DF1 All in one Master, Slave, Store-and-Forward

Repeater Simple Programming using GUI or Dipswitches Programmable Sleep Mode for Solar

Installations


UHF Radio Types:400MHz & 900 MHz etc, etc 0.1-5W adjustable transmitter power Transmits RS232 Data

– 2x DB9 connection– 2 independent serial channels allow

multiple device/protocols to be connected to 1 radio

All in one Master, Slave, Store-and-Forward Repeater 9600 and 19200bps (12.5kHz FCC)

over-the-air rate 128-bit AES encryption Simplex and half duplex modes Simple Programming using GUI Separate port for programming/

diagnostics


Wireless Ethernet (WLAN)TechnologyPublic standard Multiple manufactures devices can be used together

Secure Provided proper encryption is used (WPA2/802.11i)

Medium distance 100’s to 1000’s (+) feet

Very high speed Ethernet type speeds up to 54Mbps


When to use WLAN Technology

WLAN Does the application require high speed data access?

– WLAN technology offers speeds up to 54Mbps which is ideal for applications like uploading and downloading PLC programs, data acquisition, or video surveillance.

Is connection to an existing 802.11/Wi-Fi network available?– WLAN technology is public standard meaning that multiple

manufactures devices can communicate on the same wireless network. This means that an existing Cisco wireless infrastructure could be utilized for connection to plant floor devices.

Is IT concerned about security?– WLAN technology from Phoenix Contact uses the latest security

standards that most IT departments require such as AES encryption over the air and 802.1x network authentication. Together this will work with most existing IT infrastructure.


Encryption Overview

Poor

Good

Best

WEP - Weak key can be hacked or cracked with little to no network security knowledge

WPA - Based on the same encryption as WEP with added features like authentication. Can be hacked although it takes more time and a higher knowledge of network security

WPA2 / AES - Currently the highest level of security available and is considered un-hackable by today's standards.


Ethernet Vs SCADA Ethernet

Ethernet (infrastructure)Many nodes Fast speeds Large packets Sorter distances

SCADA EthernetMany nodes Slower speeds Very small packets Very large distances


Wireless EthernetApplicationsPlant NetworkingMobile NetworkingAccess Security Control


CellularGSM/GPRSSecurity Advanced Encryption used over the air VPN can be used to security data over the internet

Speed Up to 14.4Kbps (GSM) Up to 85.6Kbps (GPRS)

World wide access

Requires SIM card for operationMonthly service charge applies


Cellular Industrial Radios:GSM/GPRS Quad Band Modem(850/900/1800/1900MHz) Transmits RS232 Data

– 1 DB9 connection 2 Digital Inputs (10-30VDC)

– Triggers modem to dial pre-stored numbers– Send Fax or SMS

1 Digital Output (Transistor)– Trigger via SMS, local AT command or

paired modem Digital Input– Reset equipment, alarm

Integrated TCP/IP stack for GPRS networks Simple Programming using GUI or AT

Commands Wide range power supply 10-30VDC Pre-installed SIM Card ready for service

activation– USA version– Canadian version


GSM/GPRSGSM – Global System for Mobile Communications

GSM (Voice Network) Talk to any device connected to the PSTN SMS FAX Email Etc. PSTN

))))

SMS

E-Mail

FAX

Output

* PSTN – Public Switched Telephone Network


GSM Communications

GSM utilizes the voice network for communications. In the United States the carriers (AT&T, Verison, Sprint, etc.) do not want you to use this network for data communications. Therefore, it has little use for SCADA and telemetry applications. One exception is SMS (Text Messaging). SMS uses the GSM network

and is a effective way to communicate alarm states from various sites.

Water Tower/Pump House

AlarmAlarm

Control Contact

Alarm Condition


What else do you need

Add Antenna’s? Add Surge protection? Add Connections and cabling? Add PSU/UPS? Add Enclosure?

Helpful Resources Tech Service Catalogs & manuals Online tools

– Antenna selector guide – Wireless Configurator


Antennas

Omni Semi-Parabolic Parabolic Panel

Yagi

Patch


Understanding Antennas Antenna “gain” is not amplification of the RF signal, it is a

measure of the focus of the signal

High gain antennas focus the RF signal more than low gain antennas

Different types of antennas focus the RF energy in different ways

Proper installation is crucial: Connections and mounting must be secure

Rule of thumb: The further the distance, the higher the antenna must be


Vertical

Horizontal

Top View

Omni-directional antennas radiate RF energy in all directions (but not equally)

The typical radiation pattern resembles a donut centered around the antenna

They can be vertically polarized or horizontally polarized

Polarization can control the direction the “donut” goes

Antenna datasheets have diagrams of the radiation pattern

Omni-Directional Antennas: Basic Principles


Omni-Directional Antennas: Basic Principles

As the gain of an omni increases, typically the height of the donut decreases, and the diameter increases, allowing the RF to radiate further.

Example 0dB Omni

Example 3dB Omni

Example 5dB Omni


Best Practice: Point to Multipoint ApplicationN

S


Omni-Directional Antennas: Application

Clear Line of Sight, No LinkClear Line of Sight, Excellent Link


Yagi-directional antennas radiate RF energy in a specific direction

The typical radiation pattern resembles the beam of a flashlight

They can be vertically polarized or horizontally polarized

Polarization can provide separation of two RF signals

Antenna datasheets have diagrams of the radiation patternHorizontal

Vertical

Yagi-Directional Antennas: Basic Principles


Yagi-Directional Antennas: Basic Principles

Example 3dB Yagi

Example 6dB Yagi

Example 9dB Yagi

As the gain of a yagi increases, the beam width decreases and the signal becomes more focused to radiate further


Yagi-Directional Antennas: Application

No Line of Sight, No Link

Partial Line of Sight, Poor Link

Full Line of Sight, Excellent Link


Yagi-Directional Antennas: Application

No Line of Sight, Good Link

No Line of Sight, Excellent Link


A reliable, consistent power: A reliable, consistent power source

? Solar Power “Generators

• Cost savings vs. power company

• Designed for any location

• Application Approvals

What else do you need?


Selection Matrix

A B C D E

12 VOLT SYSTEMS SIS-12/40 9.7 7.7 5.8 3.8 1.9

SIS-24/20 2.4 1.9 1.5 0.7 0.5

**SIS-24/40 7.5 6.0 4.5 3.0 1.5

SIS-24/80 9.7 7.7 5.8 3.8 1.9

ZONE A = 5+ kWh/D, ZONE B = 4 kWh/DZONE C = 3 kWh/D, ZONE D = 2 kWh/DZONE E = 1 kWh/D

**Note: The 24volt, 40W systems have been reduced by 20% due to the ineffiecencies of the voltage convertor.

24 VOLT SYSTEMS

PHOENIX CONTACT SIS

SOLAR INTERFACE SYSTEMS

SOLAR INSOLATION ZONE

SYSTEM PRODUCTION IN AMPHOURS/DAY


Determining Antenna Alignment It is important to study

your environment before installing a wireless system over a large distance.

Determine the distance between sites using hand tools & Topo maps etc.

A range finder can help determine shorter distances out 1500+ yds

A GPS can provide the North and West coordinates as well elevation, even compass readings


Understanding Antennas:The Importance of Aiming / Alignment

•Moving an antenna just a few degrees can have a huge impact on signal strength, especially over long distances


This 1 mile 900MHz FHS failed. …. Not a good practice installation

The Signal could not get through the forest of leaves

This client also violated FCC rules; exceeding the 6 dB signal gain limit for this unlicensed frequency band


?.. Possibly a Well Field SCADA Site, … a wireless long range network

Antennas

Here a YAGI is aimed into an OMNI RF pattern.

For long range linking typical setups use an OMNI at the Master, YAGIs at the slaves, -multipoint to point


Stealth Antenna Masts


Determining Antenna Alignment

Height - Must increase with Range:

22 feet for 1 mile51 feet for 5 miles88 feet for 15 miles


How far will it go ???Ethernet RAD 802.11 13 mile link


The Importance of Aiming Proximity to Other Antennas –

There has to be separation from other antennas For 900MHz a 6 feet vertically or

10 feet Horizontal is the norm

Keep out of radiation path of other antennas

Reading RF strength, data transfer rates etc. at the radio is also an effective aid for positioning and aiming antennas


Antenna Mounting

Use proper mounting hardware

Place away from obstructions such as buildings, metal objects and dense foliage

Align polarization (vertical most common)

Cross-polarization can cause signal loss of 20 dB or more


Feed Line Loss Chart 900 MHz Radio Systems (per 100 ft)

Cable Type Attenuation (dB)

RG-58 16

LMR-195 11.1

RG-142 9.2

RG-213 7.6

LMR-240 7.6

LMR-400 3.9

LMR-600 2.5

Using the wrong cable can reduce efficiency

Longer distance = low-loss cable recommended

Shorter distance = less efficient cable is acceptable

Choice of feed line depends on:

length required to reach antenna

amount of signal loss tolerable

cost considerations


A Trusted System has quality components and quality terminationsYour system will perform only as good as it’s weakest link.

Here the contractor chose to cut and trace this coax through an under sized conduit.

His field termination failed at the antenna


The Importance for Surge Protection & grounding / bonding

PTZ camera

A best practice discussion


RTU

The importance for grounding & surge protection best practices


ApplicationsDifferent applications have different requirements Things to consider

How far does the signal need to go?– Feet, Miles, Country, World

What is the density of the nodes? – Remote, Dense

What update times are required?– Days, Hours, Minuets, Seconds, Milliseconds

What type of data will be communicated?– I/O, Serial, Kbps, Mbps, Gbps

Is power available?– Hardwired, Battery, Solar


Path StudyProcess

Path Software Studies


Site Selection

Protect the radio from harsh exposureProvide a source of adequate & stable powerContain suitable entrances for antenna and required cablingSelect Antenna locations that provides an unobstructed transmission path in the direction of the associated remote(s)


900MHz Wireless Serial/IOApplications Eliminate Sensor Wire (Wire-In, Wire-Out)Monitoring and Controlling Simple IO PLC to PLC IO communications

Need Tank levels and Pump control

Control Station


Wireless IO Scenarios

Analog (In)Analog (Out)Higher transmission power

3 MilesLong Distance Wireless IO

Wireless IO through walls and obstructions


Application

Wireless I/O (Long Distance) Application

– An analog signal needs to be collected from a remote pumping station. Which reports the level of the water tank.

Problem– Laying cable and conduit is

simply to costly. The distance was 5200’ and cable must be run under two roads.


Application

Long distance communications at 5200 feetWire in/ Wire out need

Analog (In)Analog (Out) Higher transmission power

5200ft


Application

Wireless I/O (Short Distance) Application

– Collect data from various sensors located on machinery that will be used for predictive maintenance.

Problem– There is no easy way to wire

sensors located on the machinery back to a PLC to be monitored. There are many obstructions and this is a high noise environment that does not lend well to parallel wiring.


ApplicationProprietary Wireless SolutionMake a wired sensor, wirelessWire in/ Wire out technology can make this happen todayRadios must be wired for power or solar powered

Higher transmission power


WSN to Long Hall

ApplicationWSN SolutionWired sensors can still be made wireless The WSN radios will “Mesh” in small clustersWSN radios are battery powered. No hard wiring needed.WSN is made for short distances a Long Hall radio will be needed

Higher transmission power WSN


Application

Serial Application

– Tank levels must be monitored from a verity of tanks. This information must be collected by a PLC.

Problem– The tanks are spread over a

vary large area and it is simply to costly to run cable and conduit to each location.


Application

I/O is collected at each tank, reported to the radio, Then sent too the master PLC.This can be more reliable then wired connections as there is

no worry that a trenched cable will become damaged over time.

Higher transmission power


Application

Ethernet Application

– An existing security system has become antiquated. This system needs updated and new cameras must be installed.

Problem– The locations where new

cameras must be installed are to difficult or expensive to wire for connection.


Application

Ethernet Cameras or Analog cameras processed with a video server can be connected to the Ethernet RadiosThe video will be streamed to the master radio and can be

archived or viewed at the master station

High Speed Transmission


Application

Serial and IO Application

– The contents of trucks transporting various materials needs to be monitored for temperature, quantity, and location for quality purposes.

Problem– The trucks transport these

materials around the United States and Canada. Currently a PLC is used to monitor temperature and quantity of the material although this data can only be downloaded when the truck is parked at its destination.


GSM/GPRSGSM – Global System for Mobile Communications

GSM (Voice Network) Talk to any device connected to the PSTN SMS FAX Email Etc. PSTN

))))

SMS

E-Mail

FAX

Output

* PSTN – Public Switched Telephone Network


ApplicationGSM/GPRSData-loggers or PLCs are used to collect and archive dataGSM/GPRS modem will provide international access to the

cellular network. This allows for monitoring of the truck and its contents.

Internet GPRS

GPS

GPS


Success storiesSan Antonio Wastewater SystemApplication

The San Antonio wastewater treatment plant needed visual alarm beacons and audible hours to warn of hazardous conditions

Wireless Solution Trusted Wireless I/O Radios were used as a

wireless conduit for triggering remote indicators and alarms.

ROI SAWS quickly and easily implemented an alarm

system that notifies their employees of potentially hazardous conditions. By using Trusted Wireless I/O, the company avoided the high costs of installing wire and conduit.


Success storiesSan Antonio Water System Application

San Antonio Water System measures water usage and flow to customers. Their old SCADA system used expensive, unreliable leased-line phone subscription.

Wireless Solution The leased-line phone system was replaced with

Trusted Wireless Data Radios. This Trusted Wireless network provides real-time stream usage and flow measurements from each of the customer sites.

ROI SAWS calculated a two-year payback in lease-line

cost with the purchase of the Trusted Wireless Data Radio network. In addition, SAWS gained savings through increased reliability, and by eliminating site visits to manually record data when the leased-lines where in repair


900 MHz Ethernet Applications

Remote tank monitoring (Water anything, Chemical)SCADA (process, water towers, sewage)Security and surveillance (non-Streaming)Utilities (Water/Waste water, etc, etc)Municipalities


Wireless Ethernet Scenario

IO to MODBUS RTU Registers

Remote PLC access forPolling and programming

Remote PLC access forPolling and programming

Wireless Data and IO access


WLAN Scenario

High Speed Transmission

High Speed Wireless Data and IO access


And now….

CellularGSM/GPRS Technology

•Very Long distances - international.

•Mobile applications

•Challenging RF environments

•Ease/speed of implementation

•Polled Data and event signaling for process applications. Telemetry for SCADA.

•Serial data radio


Wireless EthernetApplicationsPlant NetworkingMobile NetworkingAccess Security Control


Monitoring and Control Point to Point Trusted Wireless ™ I/O Typical Applications

Monitoring and controlling Tanks and Wells Monitoring and controlling

Pumping Stations

Need Tank levels and Pump control

Control Station


Trusted Wireless Data

Typical Applications Tank Monitoring Irrigation Systems Pipe Line Monitoring


Q & A

Welcome to PHOENIX CONTACT

Thank You

Stewart WilsonProject EngineerCentral Region815-274-5049