Siemens SIMATIC S7-200 User manual

Microsystem

SIMATICS7-200

OneHourPrimer 7/99

Safety Guidelines The One Hour Primer was created as a quick introduction to the world of S7-200 and

has deliberately been kept short. It is not a substitute for the S7-200 manual.

Therefore, please observe the instructions given in the S7-200 manual, especially the

safety guidelines.

Trademarks SIMATIC® and SIMATIC NET® are registered trademarks of Siemens AG.

Third parties using for their own purposes any other names in this document which

refer to trademarks might infringe upon the rights of the trademark owners.

The reproduction, transmission or use of this document or

its contents is not permitted without express written

authority. Offenders will be liable for damages. All rights,

including rights created by patent grant or registration of a

utility model or design, are reserved.

Siemens AG

Automation and Drives

Industrial Automation Systems Division

PO Box 4848, D-90327 Nuremberg

Federal Republic of Germany

Disclaimer of Liability

We have checked the content of this manual for agreement with

the hardware and software described. Since deviations cannot

be precluded entirely, we cannot guarantee full agreement.

However, the data in this manual are reviewed regularly and any

necessary corrections included in subsequent editions.

Suggestions for improvement are welcomed.

Subject to change without prior notice

Siemens Aktiengesellschaft Order number: 6ZB5310-0EG02-0BA2

3UDFWLFHH[DPSOHV Practice examples for the 1 Hour Primer can be found in the directory:

"PRIM_200/1H_EX/"

Edition 07/1999

Item Quantity available

S7-200 CPU 221 Relay 1

Simulator for CPU 221 1

Software STEP 7-Micro/WIN 32 (V 3) 1

Training Model on Mounting Rail 1

PC/PPI Cable 1

S7-200 Documentation 1

One Hour Primer

incl. Exercise Diskette 1

Screw driver 1

Contents of the S7-200 Starter Kit

Basic

Settings 1st Exercise

Program Appendix

Hardware More

Exercises

Software

Preface

Dear S7-200 User,

The use of programmable controllers (PLC) in automation is constantly on the

increase as the pressure to reduce costs in the production process rises. The fast

pace of technical development is another reason why more and more automation

problems are being solved with programmable controllers.

The Micro PLC S7-200, in particular, is being used for more and more applications

because it combines power with an attractive price and simple operation.

To make your first steps in the world of S7-200 as simple as possible, we have

created a special Starter Kit.

This One Hour Primer is intended to help you learn enough basic skills to be able

to use the S7-200 within the shortest possible time.

And now, we wish you a simple and quick start and every success.

Good luck!

Basic

Settings 1st Exercise

Program Appendix

Hardware More

Exercises

Software 2

The structure of the document

is shown at the foot of each

page.

The chapter which you have

opened is highlighted.

Table of Contents

Hardware

Software

Basic Settings

1st Exercise Program

More Exercises

Setting up the Hardware (Assembly) 5

Structure of an S7-200 (CPU 221) PLC 6

Wiring of the Training Assembly 7

Circuit Diagram of the Training Assembly 8

Terminal Diagram of the S7-200 (CPU 221) 9

Installing the Software on Windows 95/98/NT 11

Starting STEP 7-Micro/WIN 12

The Help System 13

Setting the Transmission Rate 15

Configuring the Port for the PG /PC 16

First Function Test 17

Writing Your First Program 19

Opening the 1st Exercise Program 20

Downloading the 1st Exercise Program 21

Function and Test of the 1st Exercise Program 22

Ladder Logic Elements 23

Transforming a Circuit Diagram 24

Elements of the 1st Exercise Program 25

Status View (online) 26

Statements 27

1st Program Modification: AND Logic Operation 29

Inserting a Logic Gate 30

Entering the Operand and Testing 31

Deleting ... 32

2nd Program Modification: OR Logic Operation 33

Inserting an OR Element 34

3rd Program Modification: On-Delay Timer 35

The On-Delay Timer Function 36

Programming the On-Delay Timer 37

Plain Speaking 38

Creating a New Project 40

Congratulations 43

Of Bits, Bytes and Words 48

Address Areas of the S7-200 49

Cyclic Program Execution in the S7-200 PLC 50

Appendix

1st Exercise

Program 3

Appendix

Exercises

Basic

Settings

SoftwareHardware

Software Basic

Settings 1st Exercise

Program Appendix

Hardware More

Exercises 4

Basic

Settings 1st Exercise

Programm Appendix

Hardware More

Exercises

Software

Setting up the Hardware (Assembly)

1. Mount the enclosed mounting rail on a base plate as shown in the drawing.

Base plate

Mounting rail

2. Mount the simulator on the input terminal block of the S7-200.

The input terminal block is the terminal block on the underside of the PLC.

3. Snap the assembled PLC onto the mounting rail from above.

4. Snap the training model (part of the starter kit) onto the mounting rail

next to the PLC.

Simulator

S7-200

CPU

Training model

Basic

Settings 1st Exercise

Programm Appendix

Hardware More

Exercises

Software

Structure of a S7-200 (CPU 221)

Output

terminals

Input

Terminals

Analog

potentiometer

Power

Supply

Programming

interface port (PPI)

Port for expansion

modules (not with

CPU 221)

Mode selector switch

STOP, TERM, RUN

Output for sensors

DC 24 V /180 mA

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