SIMATIC S7-200 Programmable Controller.pdf

Preface, Contents

Introducing the

S7-200 Micro PLC

Installing an S7-200

Micro PLC

Installing and Using the

STEP 7-Micro/WIN Software

Getting Started with a

Sample Program

SIMATIC

Additional Features of

STEP 7-Micro/WIN

S7-200 Programmable Controller

Basic Concepts for

Programming an S7-200

CPU

System Manual

CPU Memory: Data Types

and Addressing Modes

Input/Output Control

This manual has the order number:

Network Communications

and the S7-200 CPU

6ES7298-8FA01-8BH0

Instruction Set

Appendix

S7-200 Data Sheets

Power Calculation Table

Error Codes

Special Memory (SM) Bits

How STEP 7-Micro/WIN

Works with Other STEP 7

Programming Products

Execution Times for STL

Instructions

S7-200 Order Numbers

S7-200 Troubleshooting

Guide

Index

Safety Guidelines

This manual contains notices which you should observe to ensure your own personal safety, as

well as to protect the product and connected equipment. These notices are highlighted in the

manual by a warning triangle and are marked as follows according to the level of danger:

Danger

indicates that death, severe personal injury or substantial property damage will result if proper

precautions are not taken.

Warning

indicates that death, severe personal injury or substantial property damage can result if proper

precautions are not taken.

Caution

indicates that minor personal injury or property damage can result if proper precautions are not taken.

Qualified Personnel

The device/system may only be set up and operated in conjunction with this manual.

Only qualified personnel should be allowed to install and work on this equipment. Qualified

persons are defined as persons who are authorized to commission, to ground, and to tag circuits,

equipment, and systems in accordance with established safety practices and standards.

Correct Usage

Note the following:

Warning

This device and its components may only be used for the applications described in the catalog or the

technical description, and only in connection with devices or components from other manufacturers

which have been approved or recommended by Siemens.

This product can only function correctly and safely if it is transported, stored, set up, and installed

correctly, and operated and maintained as recommended.

Trademarks

SIMATIC, SIMATIC NET and SIMATIC HMI are registered trademarks of Siemens AG.

STEP 7 and S7 are trademarks of Siemens AG.

Microsoft, Windows, Windows 95, and Windows NT are registered trademarks of Microsoft

Corporation.

Underwriters Laboratories is a trademark of Underwriters Laboratories, Inc.

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

Bereich Automatisierungs- und Antriebstechnik

Geschaeftsgebiet Industrie-Automatisierungssysteme

Postfach 4848, D-90327 Nuernberg

Disclaimer of Liability

We have checked the contents of this manual for agreement with the

hardware and software described. Since deviations cannot be pre-

cluded entirely, we cannot guarantee full agreement. However, the

data in this manual are reviewed regularly and any necessary cor-

rections included in subsequent editions. Suggestions for improve-

ment are welcomed.

Technical data subject to change.

Siemens Aktiengesellschaft

6ES7 298-8FA01-8BH0

ier tragen Sie Ihren Buchtitel ein ---

C79000 G7076 C230 02

Siemens AG 1998

Preface

Purpose

The S7-200 series is a line of micro-programmable logic controllers (Micro PLCs) that can

control a variety of automation applications. Compact design, low cost, and a powerful

instruction set make the S7-200 controllers a perfect solution for controlling small

applications. The wide variety of CPU sizes and voltages, and the multiple programming

options available, give you the flexibility you need to solve your automation problems.

This manual provides information about installing and programming the S7-200 Micro PLCs,

including the following topics:

Installing and wiring the S7-200 CPU and expansion I/O modules, and installing the

STEP 7-Micro/WIN software

Designing and entering a program

Understanding the CPU operations, such as data types and addressing modes, the CPU

scan cycle, password-protection, and network communication

This manual also includes descriptions and examples for the programming instructions,

typical execution times for the instructions, and the data sheets for the S7-200 equipment.

Audience

This manual is designed for engineers, programmers, installers, and electricians who have a

general knowledge of programmable logic controllers.

Scope of the Manual

The information contained in this manual pertains in particular to the following products:

S7-200 CPU models: CPU 212 Release 1.01, CPU 214 Release 1.01,

CPU 215 Release 1.02, and CPU 216 Release 1.02

Version 2.1 of STEP 7-Micro/WIN programming software packages:

– STEP 7-Micro/WIN 16 for the 16-bit Windows 3.1x

– STEP 7-Micro/WIN 32 for the 32-bit Windows 95 and Windows NT

Agency Approvals

The SIMATIC S7-200 series meets the standards and regulations of the following agencies:

European Community (CE) Low Voltage Directive 73/23/EEC

European Community (CE) EMC Directive 89/336/EEC

Underwriters Laboratories, Inc.: UL 508 Listed (Industrial Control Equipment)

Canadian Standards Association: CSA C22.2 Number 142 Certified (Process Control

Equipment)

Factory Mutual Research: FM Class I, Division 2, Groups A, B, C, & D Hazardous

Locations, T4A

VDE 0160: Electronic equipment for use in electrical power installations

Refer to Appendix A for compliance information.

S7-200 Programmable Controller System Manual

C79000-G7076-C230-02

iii

Preface

Related Information

Refer to the following documentation for more detailed information about selected topics:

ET 200 Distributed I/O System Manual: describes how to install and use the ET 200

products for distributed I/O.

Process Field Bus (PROFIBUS) standard (EN 50170): describes the standard protocol

for the S7-200 DP communication capability.

TD 200 Operator Interface User Manual: describes how to install and use the TD 200

with an S7-200 programmable logic controller.

How to Use This Manual

If you are a first-time (novice) user of S7-200 Micro PLCs, you should read the entire manual.

If you are an experienced user, refer to the table of contents or index to find specific

information.

“Introducing the S7-200 Micro PLC” (Chapter 1) provides an overview of some of the

features of the equipment.

“Installing an S7-200 Micro PLC” (Chapter 2) provides procedures, dimensions, and

basic guidelines for installing the S7-200 CPU modules and expansion I/O modules.

“Installing and Using the STEP 7-Micro/WIN Software” (Chapter 3) describes how to

install the programming software. It also provides a basic explanation about the features

of the software.

“Getting Started with a Sample Program” (Chapter 4) helps you enter a sample program,

using the STEP 7-Micro/WIN software.

“Additional Features of STEP 7-Micro/WIN” (Chapter 5) describes how to use the TD 200

Wizard and the S7-200 Instruction Wizard, and other new features of STEP 7-Micro/WIN.

“Basic Concepts for Programming an S7-200 CPU” (Chapter 6), “CPU Memory: Data

Types and Addressing Modes” (Chapter 7), and “Input/Output Control” (Chapter 8)

provide information about how the S7-200 CPU processes data and executes your

program.

“Network Communications and the S7-200 CPU” (Chapter 9) provides information about

how to connect the S7-200 CPU to different types of networks.

“Instruction Set” (Chapter 10) provides explanations and examples of the programming

instructions used by the S7-200 CPUs.

Additional information (such as the equipment data sheets, error code descriptions,

execution times, and troubleshooting) are provided in the appendices.

Additional Assistance

For assistance in answering technical questions, for training on this product, or for ordering,

contact your Siemens distributor or sales office.

For Internet information about Siemens products and services, technical support, or FAQs

(frequently asked questions) and application tips, use this Internet address:

http://www.ad.siemens.de

S7-200 Programmable Controller System Manual

C79000-G7076-C230-02

The manual is organized according to the following topics:

Contents

Introducing the S7-200 Micro PLC

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-1

1.1

Comparing the Features of the S7-200 Micro PLCs

. . . . . . . . . . . . . . . . . . . . . . . . . .

1-2

1.2

Major Components of the S7-200 Micro PLC

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-4

Installing an S7-200 Micro PLC

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-1

2.1

Panel Layout Considerations

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-2

2.2

Installing and Removing an S7-200 Micro PLC

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-5

2.3

Installing the Field Wiring

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-8

2.4

Using Suppression Circuits

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-13

2.5

Power Considerations

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-15

Installing and Using the STEP 7-Micro/WIN Software

. . . . . . . . . . . . . . . . . . . . . . .

3-1

3.1

Installing the STEP 7-Micro/WIN Software

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-2

3.2

Using STEP 7-Micro/WIN to Set Up the Communications Hardware

. . . . . . . . . . .

3-4

3.3

Establishing Communication with the S7-200 CPU

. . . . . . . . . . . . . . . . . . . . . . . . . .

3-7

3.4

Configuring the Preferences for STEP 7-Micro/WIN

. . . . . . . . . . . . . . . . . . . . . . . . . .

3-25

3.5

Creating and Saving a Project

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-26

3.6

Creating a Program

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-27

3.7

Creating a Data Block

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-32

3.8

Using the Status Chart

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-34

3.9

Using Symbolic Addressing

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-36

Getting Started with a Sample Program

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4-1

4.1

Creating a Program for a Sample Application

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4-2

4.2

Task: Create a Project

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4-6

4.3

Task: Create a Symbol Table

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4-8

4.4

Task: Enter the Program in Ladder Logic

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4-10

4.5

Task: Create a Status Chart

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4-14

4.6

Task: Download and Monitor the Sample Program

. . . . . . . . . . . . . . . . . . . . . . . . . . .

4-15

Additional Features of STEP 7-Micro/WIN

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-1

5.1

Using the TD 200 Wizard to Configure the TD 200 Operator Interface

. . . . . . . . . .

5-2

5.2

Using the S7-200 Instruction Wizard

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-12

5.3

Using the Analog Input Filtering Instruction Wizard

. . . . . . . . . . . . . . . . . . . . . . . . . .

5-14

5.4

Using Cross Reference

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-17

5.5

Using Element Usage

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-18

S7-200 Programmable Controller System Manual

C79000-G7076-C230-02

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