Komunikacja bezprzewodowa MAS21.pdf

Micro Application Example

Wireless Data Communication based on GPRS

Micro Automation Set 21

Note

Micro Automation Set 21

Beitrags-ID 22537809

Note

The Micro Automation Sets are not binding and do not claim to be complete

regarding their configuration, equipment and any eventuality. The Micro

Automation Sets do not represent customer-specific solutions. They are

only intended to provide support for typical applications. You are

responsible for ensuring that the described products are correctly used.

These Micro Automation Sets do not relieve you of the responsibility of

safely and professionally using, installing, operating and servicing

equipment. When using these Micro Automation Sets, you recognize that

Siemens cannot be made liable for any damage/claims beyond the liability

clause described. We reserve the right to make changes to these Micro

Automation Sets at any time without prior notice. If there are any deviations

between the recommendations provided in these Micro Automation Sets

and other Siemens publications – e.g. Catalogs – the contents of the other

documents have priority.

Warranty, Liability and Support

We accept no liability for information contained in this document.

Any claims against us – based on whatever legal reason – resulting from

the use of the examples, information, programs, engineering and

performance data etc., described in this Micro Automation Set shall be

excluded. Such an exclusion shall not apply in the case of mandatory

liability, e.g. under the German Product Liability Act

(“Produkthaftungsgesetz”), in case of intent, gross negligence, or injury of

life, body or health, guarantee for the quality of a product, fraudulent

concealment of a deficiency or breach of a condition which goes to the root

of the contract (“wesentliche Vertragspflichten”). However, claims arising

from a breach of a condition which goes to the root of the contract shall be

limited to the foreseeable damage which is intrinsic to the contract, unless

caused by intent or gross negligence or based on mandatory liability for

injury of life, body or health. The above provisions do not imply a change in

the burden of proof to your detriment.

copy these Micro Automation Sets or excerpts of them without first

having prior authorization from Siemens A&D in writing.

For questions about this document please use the following e-mail address:

csweb@ad.siemens.de

V3.1

01.10.2007

2/65

Foreword

Micro Automation Set 21

Beitrags-ID 22537809

Foreword

Micro Automation Sets are fully functional and tested automation

configurations based on A&D standard products for simple, fast and

inexpensive implementation of automation tasks for small-scale

automation. Each of the available Micro Automatic Sets covers a frequently

occurring subtask of a typical customer problem in the low-end

performance level.

The sets help you to obtain answers with regard to required products and

the question of how they function when combined.

However, depending on the system requirements, a variety of other

components (e.g. other CPUs, power supplies, etc.) can be used to

implement the functionality on which this set is based. Please refer to the

respective SIEMENS A&D catalogs for these components.

The Micro Automation Sets are also available by clicking the following link:

http://www.siemens.de/microset

V3.1

01.10.2007

3/65

Foreword

Micro Automation Set 21

Beitrags-ID 22537809

Table of Contents

Table of Contents ... ...................................................................................................... 4

Fields of Application and Benefits .. .............................................................. 5

2 Configuration .. ................................................................................................ 9

2.1 Layout Diagram of a Remote Station.. .............................................................. 9

2.2 Layout Diagram of the Central Station... ......................................................... 10

2.3 Hardware and Software Components... .......................................................... 11

2.4 Remote Station ... ............................................................................................ 11

2.5 Central Station ... ............................................................................................. 12

3 Function Principle .... .................................................................................... 13

3.1 SINAUT MICRO SC Server ... ......................................................................... 13

3.2 GPRS Modem SINAUT MD720-3.... ............................................................... 17

3.3 S7 Block Library... ........................................................................................... 18

3.4 Communication between Remote Stations.... ................................................. 21

3.5 Management of the send jobs ... ..................................................................... 28

3.6 Buffering of process data with real time stamp ... ............................................ 31

3.7 Archiving the process data in the Central Station ... ........................................ 33

3.8 Data Logging ... ............................................................................................... 34

3.9 Sending SMS text messages... ....................................................................... 35

3.10 Dyn-DNS Service... ......................................................................................... 36

3.11 TeleService.... ................................................................................................. 37

4 Configuring the Startup Software ... ............................................................ 38

4.1 Preliminary Remarks .... .................................................................................. 38

4.2 Downloading the Startup Code .... ................................................................... 38

4.3 Configuring Components ... ............................................................................. 38

4.3.1 SINAUT MICRO SC Server ... ......................................................................... 39

4.3.2 WinCC flexible Runtime ... ............................................................................... 39

4.3.3 Remote Station ... ............................................................................................ 40

5 Live Demo.... .................................................................................................. 44

5.1 User interface ... .............................................................................................. 45

5.2 Scenario of Remote Station “Stormwater Overflow” .... ................................... 49

5.3 Scenario of Remote Station “Inspection Shaft”... ............................................ 51

6 Performance Data of the Application... ....................................................... 58

6.1 Estimating the communication costs ... ........................................................... 58

6.1.1 Connection costs of the Remote Station ... ..................................................... 58

6.1.2 Example of the connection costs of the Remote Stations ... ........................... 59

6.1.3 Connection costs of the Central Station ... ...................................................... 62

6.2

Information on connection quality .... ............................................................... 63

Technical data... ............................................................................................ 64

V3.1

01.10.2007

4/65

Fields of Application and Benefits

Micro Automation Set 21

Beitrags-ID 22537809

Fields of Application and Benefits

Automation Task

To provide good comprehensibility, the features of the Micro Automation

Set are explained using an application example.

The infrastructure of a wastewater treatment plant contains the substations

“Stormwater Overflow 1 “ and “Inspection Shaft 2 “. Both are supposed to

communicate with each other and with a control center. The Internet-based

GPRS 3 service, which charges by data volume, should be used as a data

transfer medium. The control center should enable central operator control

and monitoring.

Figure 1-1

Wastewater Treatment Plant

Stormwater Overflow:

• Flow rate measurement of water influx

• Measuring the filling level of the overflow structure

• Overflow measurement 4

• Automatic pumping of basin content to the

discharge treatment plant

• Operating hours count of the pumps

• Monitoring overflow structure and dry run of the

pumps

Pump

Stormwater Overflow

River

Wastewater

Flow

Wastewater

Treatment Plant

Inspection Shaft:

• Flow rate measurement of wastewater influx

• Measuring the filling level of the overflow structure

•A utomatic pumping of basin content to the

discharge treatment plant

• Operating hours count of the pumps

• Monitoring overflow structure and dry run of the

pumps

• All measuring data are to be buffered locally with

real-time stamps and non-volatilly, until they have

been sent to the Central Station successfully and

could be archived there.

• A trigger in the Central Station causes the

“Inspection Shaft“ Remote Station to send an SMS

to a telephone number specified by the Central

Station.

Inspection Shaft

Pump

1 Stormwater Overflow is a structure in the wastewater network for catching peak loads. A Stormwater Overflow

enables controlled “overflow“ (with overflow measurement).

2 Inspection Shaft is a shaft in the pipe system of the wastewater network. The Micro Automation Set

contains/simulates elements for flow measurement. This enables measuring and calculating the wastewater influx from

an industrial plant, for example.

3 GPRS : G eneral P acket Radio S ervice is a package-oriented data service in GSM networks. These are based on IP

network technology (IP = Internet protocol).

4 Overflow Measurement: Stormwater overflow structures have an overflow for surplus effluent which forms after

heavy rainfall, for example. The effluent volume is measured at an overflow edge and is referred to as overflow

measurement.

V3.1

01.10.2007

5/65

Plik z chomika:

Inne pliki z tego folderu:

Inne foldery tego chomika: