s71200_system_manual_en-US_en-US.pdf

Preface

S7 S7-1200 Programmable controller

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Product overview

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SIMATIC

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PLC concepts

S7-1200 Programmable controller

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System Manual

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11/2009

A5E02486680-02

Installation

Device configuration

Programming concepts

Programming instructions

PROFINET

Point-to-Point (PtP)

communications

Online and diagnostic tools

Technical specifications

Calculating a power budget

Order numbers

Legal information

Warning notice system

This manual contains notices you have to observe in order to ensure your personal safety, as well as to prevent

damage to property. The notices referring to your personal safety are highlighted in the manual by a safety alert

symbol, notices referring only to property damage have no safety alert symbol. These notices shown below are

graded according to the degree of danger.

DANGER

indicates that death or severe personal injury will result if proper precautions are not taken.

WARNING

indicates that death or severe personal injury may result if proper precautions are not taken.

CAUTION

with a safety alert symbol, indicates that minor personal injury can result if proper precautions are not taken.

CAUTION

without a safety alert symbol, indicates that property damage can result if proper precautions are not taken.

NOTICE

indicates that an unintended result or situation can occur if the corresponding information is not taken into

account.

If more than one degree of danger is present, the warning notice representing the highest degree of danger will

be used. A notice warning of injury to persons with a safety alert symbol may also include a warning relating to

property damage.

Qualified Personnel

The product/system described in this documentation may be operated only by personnel qualified for the specific

task in accordance with the relevant documentation for the specific task, in particular its warning notices and

safety instructions. Qualified personnel are those who, based on their training and experience, are capable of

identifying risks and avoiding potential hazards when working with these products/systems.

Proper use of Siemens products

Note the following:

WARNING

Siemens products may only be used for the applications described in the catalog and in the relevant technical

documentation. If products and components from other manufacturers are used, these must be recommended

or approved by Siemens. Proper transport, storage, installation, assembly, commissioning, operation and

maintenance are required to ensure that the products operate safely and without any problems. The permissible

ambient conditions must be adhered to. The information in the relevant documentation must be observed.

Trademarks

All names identified by ® are registered trademarks of the Siemens AG. The remaining trademarks in this

publication may be trademarks whose use by third parties for their own purposes could violate the rights of the

owner.

Disclaimer of Liability

We have reviewed the contents of this publication to ensure consistency with the hardware and software

described. Since variance cannot be precluded entirely, we cannot guarantee full consistency. However, the

information in this publication is reviewed regularly and any necessary corrections are included in subsequent

editions.

Siemens AG

Industry Sector

Postfach 48 48

90026 NÜRNBERG

GERMANY

Ordernumber: 6ES7298-8FA30-8BH0

Ⓟ 10/2009

Technical data subject to change

Legal information

Preface

Purpose of the manual

The S7-1200 series is a line of programmable logic controllers (PLCs) that can control a

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

make the S7-1200 a perfect solution for controlling a wide variety of applications. The S7-

1200 models and the Windows-based programming tool give you the flexibility you need to

solve your automation problems.

This manual provides information about installing and programming the S7-1200 PLCs and

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

knowledge of programmable logic controllers.

Required basic knowledge

To understand this manual, it is necessary to have a general knowledge of automation and

programmable logic controllers.

Scope of the manual

This manual is valid for STEP 7 Basic V10.5 and the S7-1200 product family. For a complete

list of the S7-1200 products described in this manual, refer to the technical specifications

(Page 27 9).

Certification, CE label, C-Tick, and other standards

Refer to the technical specifications (Page 27 9) for more information.

Service and support

In addition to our documentation, we offer our technical expertise on the Internet at:

http://www.siemens.com/automation/support-request

Contact your Siemens distributor or sales office for assistance in answering any technical

questions, for training, or for ordering S7 products. Because your sales representatives are

technically trained and have the most specific knowledge about your operations, process

and industry, as well as about the individual Siemens products that you are using, they can

provide the fastest and most efficient answers to any problems you might encounter.

S7-1200 Programmable controller

System Manual, 11/2009, A5E02486680-02

Preface

S7 S7-1200 Programmable controller

System Manual, 11/2009, A5E02486680-02

Table of contents

Preface...................................................................................................................................................... 3

1 Product overview..................................................................................................................................... 11

1.1 Introducing the S7-1200 PLC....................................................................................................... 11

1.2 Signal boards............................................................................................................................... 13

1.3 Signal modules ............................................................................................................ ................ 13

1.4 Communication modules ............................................................................................................. 14

1.5 STEP 7 Basic............................................................................................................................... 14

1.5.1 Different views to make the work easier...................................................................................... 15

1.5.2 Help when you need it ................................................................................................................. 16

1.6 Display panels.............................................................................................................................. 19

2 Installation ............................................................................................................................................... 21

2.1 Installation and removal procedures............................................................................................ 24

2.1.1 Installing and removing the CPU ................................................................................................. 26

2.1.2 Installing and removing a signal module...................................................................................... 27

2.1.3 Installing and removing a communication module....................................................................... 29

2.1.4 Installing and removing a signal board ........................................................................................ 30

2.1.5 Removing and reinstalling the S7-1200 terminal block connector............................................... 31

2.2 Wiring guidelines.......................................................................................................................... 32

3 PLC concepts .......................................................................................................................................... 37

3.1 Execution of the user program..................................................................................................... 37

3.1.1 Operating modes of the CPU....................................................................................................... 39

3.1.2 Event execution priorities and queuing........................................................................................ 43

3.1.3 CPU memory................................................................................................................................ 48

3.1.4 Password protection for the S7-1200 CPU.................................................................................. 52

3.1.5 Recovery from a lost password.................................................................................................... 53

3.2 Data storage, memory areas and addressing.............................................................................. 53

3.3 Data types.................................................................................................................................... 57

3.4 Using a memory card................................................................................................................... 61

3.4.1 Inserting a memory card in the CPU............................................................................................ 62

3.4.2 Configuring the startup parameter of the CPU before copying the project to the memory

card .............................................................................................................................................. 63

3.4.3 Transfer card................................................................................................................................ 63

3.4.4 Program card ............................................................................................................................... 65

S7-1200 Programmable controller

System Manual, 11/2009, A5E02486680-02

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