Siemens SIMATIC S7-200 User manual
Microsystem
SIMATICS7-200
s
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.
Copyright © Siemens AG 1999 All rights reserved
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.
© Siemens AG 1999
Subject to change without prior notice
Siemens Aktiengesellschaft Order number: 6ZB5310-0EG02-0BA2
3UDFWLFHH[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!
1
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
More
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.
5
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)
6
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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