s71200_easy_book_en-US_en-US.pdf

Preface

S7-1200 Easy Book

______________

SIMATIC

______________

Getting started

S7-1200

Easy Book

______________

Manual

Easy to communicate

between devices

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11/2009

A5E02486774-01

Introducing the powerful and

flexible S7-1200

STEP 7 Basic makes the

work easy

PLC concepts made easy

Programming concepts

made easy

Easy to use the built-in pulse

generators

Easy to use the online tools

Technical specifications

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: 6ES7298-8FA30-8BQ0

Ⓟ 10/2009

Technical data subject to change

Legal information

Preface

Welcome to the world of S7-1200, the latest in a line of the Siemens SIMATIC controllers.

The SIMATIC S7-1200 compact controller is the modular, space-saving controller for small

automation systems that require either simple or advanced functionality for logic, HMI and

networking. The compact design, low cost, and powerful features make the S7-1200 a

perfect solution for controlling small applications.

As part of the SIMATIC commitment to "totally integrated automation" (TIA), the S7-1200

product family and the STEP 7 Basic programming tool give you the flexibility you need to

solve your automation needs.

The S7-1200 helps to make the most challenging tasks easy!

The SIMATIC S7-1200 controller solution, designed for the "compact" controller class, is

comprised of the SIMATIC S7-1200 controller and SIMATIC HMI Basic panels that can both

be programmed with SIMATIC STEP 7 Basic engineering software. The ability to program

both devices using the same engineering software significantly reduces development costs.

The S7-1200 compact controller includes:

•

High-speed I/O capable of motion control, onboard

analog inputs to minimize space requirements and

the need for additional I/O, 2 pulse generators for

pulse-width applications (Page 84) , and up to 6

high-speed counters (Page 80 )

•

On-board I/O points built into the CPU modules

provide from 6 to 14 input points and from 4 to 10

output points

Signal modules for DC, relay, or analog I/O

expand the number of I/O points, and

innovative signal boards snap onto the

front of the CPU to provide additional I/O

(Page 9) .

The SIMATIC HMI Basic panels (Page 10 )

were designed specifically for the S7-1200.

This Easy Book provides an introduction to

the S7-1200 PLC. The following pages

offer an overview of the many features and

capabilities of the devices.

For additional information, refer to the S7-1200 programmable controler system manua.

You can also use the following web site to search for specific information about products or

to contact technical support representatives:

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

Easy Book

Manual, 11/2009, A5E02486774-01

Built-in PROFINET

•

Preface

For information about UL and FM certification, CE labeling, C-Tick and other standards, refer

to the Technical specifications (Page 95 ).

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.

Easy Book

Manual, 11/2009, A5E02486774-01

Table of contents

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

1 Introducing the powerful and flexible S7-1200........................................................................................... 7

1.1 Expanding the capability of the CPU ............................................................................................. 9

1.2 HMI Basic panels......................................................................................................................... 10

1.3 Mounting di mensions and clearance requirements..................................................................... 11

2 STEP 7 Basic makes the work easy........................................................................................................ 13

2.1 Help when you need it ................................................................................................................. 14

2.1.1 Printing a topic from the online help ............................................................................................ 15

2.2 Providing easy-to-use tools.......................................................................................................... 16

2.2.1 Easy to insert instructions into your user program....................................................................... 16

2.2.2 Easy access to your favorite instructions from a toolbar ............................................................. 16

2.2.3 Easy to drag and drop between editors....................................................................................... 17

2.2.4 Easy to change the operating mode of the CPU ......................................................................... 17

2.2.5 Easy to virtually "unplug" modules without losing the configuration............................................ 18

2.2.6 Easy to modify the appearance and configuration of STEP 7 Basic........................................... 18

3 Getting started......................................................................................................................................... 19

4 PLC concepts made easy........................................................................................................................ 29

4.1 Tasks performed every scan cycle .............................................................................................. 29

4.2 Operating modes of the CPU....................................................................................................... 30

4.3 Memory areas, addressing and data types.................................................................................. 31

4.4 Execution of the user program..................................................................................................... 35

4.5 Protecting access to the CPU or code block is easy................................................................... 37

5 Programming concepts made easy.......................................................................................................... 39

5.1 Easy to create the device configuration....................................................................................... 39

5.1.1 Configuring the operation of the CPU and modules.................................................................... 44

5.1.2 Configuring the IP address of the CPU........................................................................................ 46

5.2 Easy to design your user program............................................................................................... 47

5.2.1 Use OBs for organizing your user program................................................................................. 49

5.2.2 FBs and FCs make programming the modular tasks easy.......................................................... 50

5.2.3 Data blocks provide easy storage for program data.................................................................... 51

5.3 Easy to use the powerful programming languages...................................................................... 53

5.3.1 Providing the basic instructions you expect................................................................................. 54

5.4 Other features to make programming easy................................................................................. 62

5.4.1 System memory and clock memory provide standard functionality............................................. 62

5.4.2 Watch tables make monitoring the user program easy ............................................................... 64

5.4.3 Project and global libraries for easy access ................................................................................ 64

5.4.4 Cross reference to show usage................................................................................................... 65

5.4.5 Call structure to examine the calling hierarchy............................................................................ 66

Easy Book

Manual, 11/2009, A5E02486774-01

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