Training document for the company-wide automation ... - Siemens

Automation? and Drive Technology- SCE

Training document for the company-wide automation solution

Totally Integrated Automation (T I A) MODULE A3

`Startup' PLC- Programming with STEP 7

T I A Training document Last revision: 02/2002

Page 1 of 48

Module A3 `Startup` PLC- Programming with STEP 7

Automation? and Drive Technology- SCE

This document was provided by Siemens A&D SCE (automation and drive technology, Siemens A&D Cooperates with Education) for training purposes. Siemens does not make any type of guarantee regarding its contents.

The passing on or duplication of this document, including the use and report of its contents, is only permitted within public and training facilities.

Exceptions require written permission by Siemens A&D SCE (Mr. Knust: E-Mail: michael.knust@hvr.siemens.de). Offences are subject to possible payment for damages caused. All rights are reserved for translation and any case of patenting or GM entry.

We thank the company Michael Dziallas Engineering and the instructors of vocational schools as well as further persons for the support with the production of the document.

T I A Training document Last revision: 02/2002

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Module A3 `Startup` PLC- Programming with STEP 7

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2. 2.1 2.2

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5.

5.1 5.2 5.3 5.4 5.5 5.6 5.7 5.7.1 5.7.2 5.7.3 5.8

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Automation? and Drive Technology- SCE

Forward .................................................................................................................

PAGE: 5

Notes for the Programming of SIMATIC S7-300 with STEP 7..........................

7

Automation system SIMATIC S7-300 ....................................................................

7

Program software STEP 7 .....................................................................................

7

Installation of the STEP 7 Software ...................................................................

8

Program Interface Adjustment (PC- Adapter) ...................................................

9

What is a PLC and what are PLCs used for? ....................................................

14

What is the concept of a PLC? ..............................................................................

14

How does a PLC drive a process?.........................................................................

14

From where does a PLC get information about the state of a process?................

15

Where does the difference between a Normally Open (NO) and Closed (NC) Contact lie? 15

How does a PLC communicate with In/Output signals? ........................................

16

How does a program work in a PLC? ....................................................................

17

How do logic operations in a PLC- Program appear?............................................

18

AND- Logic operation.............................................................................................

18

OR- Logic operation ...............................................................................................

20

Negation .................................................................................................................

21

How is a PLC- Program generated ? How does it arrive in the memory of the PLC?

22

Assembly and Operation of the SIMATIC S7-300 .............................................

23

Example Exercise.................................................................................................

26

STEP 7- Project Application................................................................................

27

STEP 7- Program Writing in Function Diagram FBD........................................

35

STEP 7- Program Debugging in the CPU...........................................................

47

T I A Training document Last revision: 02/2002

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Module A3 `Startup` PLC- Programming with STEP 7

Automation? and Drive Technology- SCE

The following symbols stand for the specified modules: Information Installation Programming Example exercise Notes

T I A Training document Last revision: 02/2002

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Module A3 `Startup` PLC- Programming with STEP 7

Automation? and Drive Technology- SCE

1.

FORWARD

The module A3 is assigned content wise to the Basics of STEP 7- Programming and represents a quick start in the STEP-7 Programming.

Basics of STEP 7- Programming 2 - 3 days A modules

Additional functions of STEP 7- Programming 2- 3 days B modules

Industrial field bus systems

2- 3 days D modules

Sequencer programming 2- 3 days C modules

Process visualization 2- 3 days F modules

IT- Communication with SIMATIC S7

1- 2 days E modules

Learning goal:

In this module, the reader will learn about the programming of a programmable logic controller (PLC) with the programming tool STEP 7. The module arranges the basics and shows the procedure in the following steps by means of a detailed example.

? Installation of software and the modification of a program interface ? Explanation of what a PLC is and how it works ? Structure and operation of a PLC SIMATIC S7-300 ? Compilation of an example program ? Loading and debugging of an example program

Requirements:

For the successful use of this module, the following knowledge is assumed: ? Knowledge in the use of Windows 95/98/2000/ME/NT4.0

Forward Notes Installation Interface What is PLC? Setup S7-300 Example exercise Project Program Debug

T I A Training document Last revision: 02/2002

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Module A3 `Startup' PLC- Programming with STEP 7

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