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PNO Technologies for Wireless Automation Real time requirements in industrial automation PROFIBUS International 2006.ppt Hans Gerlach-Erhardt PNO TC2/WG12 [email protected] ETSI Wireless Factory Starter Group 20.-21.October 2009 – ETSI, Sophia Antipolis, France

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Page 1: PNO Technologies for Wireless Automation - Directory Listing / · PNO Technologies for Wireless Automation ... 20.-21.October 2009 – ETSI, Sophia Antipolis, France . Arial, 14 pkt

PNO Technologies for Wireless Automation

Real time requirements in industrial automation

PROFIBUS International 2006.ppt

Hans Gerlach-Erhardt

PNO TC2/WG12

[email protected]

ETSI Wireless Factory Starter Group

20.-21.October 2009 – ETSI, Sophia Antipolis, France

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l 34 Competence Center (PICC) in 14 countries

l 8 Test Labs (PITL) worldwide for Certification and Compliance Tests

l 25 Regional PI Associations (RPA) worldwide

W-

EU

BelgiumRPAPICC

DenmarkRPA

FinlandRPA

FranceRPAPICCGreat BritainRPAPICC

IrelandRPAPICCItalyRPAPICCNetherlandsRPAPICC, PITL

NorwayRPA, PICC

SwedenRPAPICC

SwitzerlandRPAPICC

Germany+ AustriaRPAPICC, PITL

E-

EU

Czech Rep.RPAPICC, PITLPolandRPA, PICC

RussiaRPA

Slovakia

Presence and Support worldwide

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RPA

Asi

a

ChinaRPAPICC, PITL JapanRPAPICC, PITL

KoreaRPA

S.-E.-AsiaRPAPICCThailandRPAPICC

Australia/New ZealandRPA

S. AfricaRPAPICC

Am

eric

a BrazilRPA

USARPAPICC, PITL

RPA = Regional PI Association PICC = PI Competen ce Center PITL = PI Test Laboratory

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PNO Structure for Technology Development

Executive Directors

Board of Directors

TC 1Test and Certification

Advisory Board

Members Assembly

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The Profibus User Organisation (PNO) Germany carries the responsibility for the Development of PROFIBUS and PROFINET technologies as well as for the Certification of Products

Business Office Certification OfficeTC 2

Communication Profiles

TC 3 PAProcess Automation

Profiles

TC 4System Integration

TC 5Marketing

Factory AutomationProfiles

TC 3 FA

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PI (PROFIBUS und PROFINET International)

PI Test Laboratories

(PITL)

Regional PI Associations

(RPA)

PI Competence Center(PICC)

Technologies

PROFIBUS & PROFINET International

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Technologies

Fieldbus based Automation Technology

Ethernet based Automation Technology

Proxy Technology

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4 Wireless Technologies for Industrial Automation

Factory and Process Automation

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WSAN

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PNO Wireless Standards for Automation

Existing and in use:

Industrial WLAN

Industrial Bluetooth

WirelessHART

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draft of specification until end of 2009:

Wireless Sensor Actuator Network

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„WSAN“

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WSAN Scope

� Typical Wireless Devices could be…� Proximity sensors (inductive, optical etc.)� Light barriers� Pilot devices� Pneumatic/hydraulic actuators� IO modules� …

� They are…

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� They are…� part of an automation system� used for (real-time) control of the process� mounted „somewhere“ in the machine (FA) or field (PA)

� They should be…� easy to engineer with tools that are known to the customer� easy to set up & replace in case of service/maintenance

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WSAN

Process AutomationWirelessHART

WSAN Scope

Factory AutomationReal time control

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IEEE802.15.4IEEE802.15.1

- Use of existing Engineering Tools- Seamless integration into Profibus/Profinet infrastructure

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WSAN Principles

Application Service Elements for a Wireless Sensor/Actuator (SA) according to [2]�IO Data: SA have a relatively small amount of input/output data (“cyclic data”), e.g. 32 bit per SA

�Process/Record Data: SA have a limited amount of record data (e.g. parameters, service information),e.g. 255 records with 32 bit per record

�Diagnosis: SA can support diagnosis e.g. 32bit per SA, possibility to indicate diagnosis request from SA to basestation

�Alarm, Management: not needed for SA

�Context: Service needed for SA identification and system configuration.

�Load region: could be optional for firmware updates etc.

�Function Invocation: not needed

�Time: could be optional

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PROFIBUS/PROFINET Integration�Mapping can follow any of the suggested integration concepts described in [1].

�Addressing elements that need to be transmitted over the air (e.g. SA node number, record data addresses) should be limited to the absolute required minimum in order to optimize performance.

�Addressing elements should be sized in a reasonable way, but shall “fit” to PROFIBUS and PROFINET.

System Configuration and Device Integration�System Configuration/Device Integration has to be solved by the means already defined by the PNO e.g. GSDML, GSD, FDT/DTM, EDDL

�Additional software for configuration/device integration is not acceptable.

�Additional software to monitor the wireless network can be an option, but shall not be mandatory.

[1] Fieldbus Integration into PROFINET IO, Guideline, Version 1.0 September 2006, Order No: 7.012

[2] IEC611158- 5

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2 Application Categories

The four wireless technologies of the PNO are clustered according to their transmission properties:

1. category: WLAN and Bluetooth allow the transmission of PROFINET-frames and thus the direct connection of wireless PROFINET IO-devices to the plant network. Even Safety-Communication using the PROFIsafe-Profile is possible.

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2. category: WirelessHART and WSAN are not suitable for the transmission of PROFINET-frames because of the small packet size and low data rates. They will be connected to Profinet networks via gateways and thus allow the connection of widely distributed sensors or actuators in the process world and fast real time communication in manufacturing plants.

WIFA 20.+21.10.2009

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System Structure WSAN-FA

PLC

WSAN-FA IO-LinkWSAN-FA Base

/

Remote IOs

WSAN-FASensor/Actuator

IO-LinkSensor/Actuator

StandardSensor/Actuator

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WSAN-FA Base station

IO-LinkMaster

WSAN-FA Base station

WSAN-FA Sensor/Actuator

IO-LinkSlave

Remote IOs

Sensors/Actuators

Converter

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Factory Automation Requirements

WSAN

Factory automation in many cases requires a response time of less than 10ms for a machine with more than 100 sensors and/or actuators.

The PNO decided to base their FA-solution on ABB‘s WISA-Technology because the timing and robustnes of the system is industry proven

Three major enhancements are needed to cover the known use cases:

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- Channel Blacklisting as one important method for coexistence

- Range extension up to 30m

- Compatibility to the IO-Link data models for sensors and actuators

WIFA 20.+21.10.2009

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WSAN Use Cases Coverage

Max.

Range m

Total node number/local application

Avg. Node

Min.

With a Given PHY:- Determined!

WSAN Use Cases:

Turntable Assembly (Rundteller)

Robot Assembly

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Delay (max.)

Error rate(Zuverlässigkeit)

Energie

10

E-1

0

10

E-9

10

E-8

10

E-7

0 . 0 1 0 . 1 1 1 0

Avg. Node Density /m³

-> Optimize/Accept

(Rohbauzelle, BiW)

Metal Stamping („Presse“)Tooling machines

Peripheral devices (Geräteschlitten, Portale, Zufuhr)

Transport Systems (FTS)

Fördertechnik (Krane, Bänder, Logistik)

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Resulting Requirements

Requirement Max.

Wireless devices per application

per 1 WSAN System

300

100 *

Overlapping WSAN Systems 5

Range 10 (30) m

Node density

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Paket loss rate < 10E-9

Delay max. [ms] 10 ms *

108

106

104

102

1

t

* Scalable: 1-4 Uplinks -> 25 – 100 devices @2ms TDMA cycle time High speed mode possible with shorter TDMA cycle(-> 50 nodes @1ms TDMA cycle time ?)

2,2ms

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IO-Link - WSAN Mapping

Master/Gateway

Only Parts of data Link and Phy have to be adapted

Application

IO-Link...

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DLL

PHYWSAN

Data channel mapping

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-10

-5

0

WSAN Repeated Code Performance vs Different CRC‘s

Comparison of different coding strategies:

CRC23 and CRC55 can be used if the repeated information space is used for extending the CRC for the short and long telegram

�Repeated Code, HD=8, 1*10-9CRC16

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16

-4 -3 -2 -1 0BER

-35

-30

-25

-20

-15

-10

duP

�CRC16, HD=6, 1.5*10-5

�CRC23, HD=8, 1.2*10-7

�CRC55, HD≥8, 2.8*10-17

The Repeated code outperforms the CRC16 and CRC23 in all respects and even the CRC55 when it comes to protection against white noise

Probability of undetected error vs BER (log-log)

CRC23 Repeated

WIFA 20.+21.10.2009

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Coexistence is a must

PNO and ZVEI agreed on a coexistence guideline, that is widely accepted in the industry and was hihgly apreciated by end users and device manufacturers.

The brochure is available for download at: http://www.zvei.org/fileadmin/user_upload/Fachverbaende/Automation/Publikation/ZVEI_Coexistence_of_Wireless_Systems_in_Automation_Technology.pdf

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Source: ZVEI

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ETSI

ETSI: : Wireless Factory Automation (WIFA)� Identification of potential standardization activities with regard to topics such

as requirements, spectrum usage, co-existence, the DECT model, Ultra Wide Band, radio technology for real-time applications, architecture, network integration

� Interoperability and conformance testing

� Regulatory topics such as allocation of exclusive spectrum to wireless factory usage and the use of exclusive spectrum technologies such as Tetra and

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usage and the use of exclusive spectrum technologies such as Tetra and Femtocells.

� ETSI should help to promote and support available s tandards!

Avoid redundant work in a new standardization group !

WIFA 20.+21.10.2009

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TC2 / WG12 WSAN

Have a sucessful day!

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