s71200_getting_started_en-US.pdf

Preface

S7-1200 Getting started with S7-1200

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Quick review

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SIMATIC

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Create a simple latch circuit

S7-1200

Getting started with S7-1200

______________

Getting Started

11/2009

A5E02486791-01

Installation

Complete the user program

Use a watch table for

monitoring

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

A5E02486791-01

Ⓟ 10/2009

Technical data subject to change

Legal information

Preface

As part of the SIMATIC commitment to "totally

integrated automation" (TIA), the S7-1200 product

family and the STEP 7 Basic programming package

give you the tools for creating your automation

application. The compact design, low cost, and powerful

features make the S7-1200 compact controller a perfect

solution for controlling small applications.

The examples in this document guide your first steps in

the world of S7-1200, teaching you the basic skills

within the shortest possible time.

Note

Review the S7-1200 Programmable Controler System Manual for safety guidelines

This quick-start guide provides only a quick introduction to the world of S7-1200. Before

performing the exercises in this quick-start guide, review the safety guidelines and other

information in the SIMATIC S7-1200 Programmable Controler System Manua.

Parts list

Description

Quantity

Order number

CPU 1212C AC/DC/RLY

1 6ES7212-1BD30-0XB0

Simulator: SIM 1274 (digital inputs)

1 6ES7274-1XF30-0XA0

Standard Ethernet CAT5 cable

1 6XV1850-2GH20

STEP 7 Basic programming software

1 6ES7822 -0AA00-0YA0

The starter kit also contains the S7-1200 documentation collection CD.

Note

You must provide a power cord for the CPU.

The CPU 1212C AC/DC/RLY requires 120/240 VAC. You must provide a power cord and

connect it to the CPU. For any other CPU, refer to the S7-1200 Programmable Controler

System Manual for power requirements and installation procedures.

Getting started with S7-1200

Getting Started, 11/2009, A5E02486791-01

Preface

Contact information

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

Use the customer support web site ( http://www.siemens.com/automation/support-request )

to search for specific information about products or to contact technical support

representatives.

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.

Getting started with S7-1200

Getting Started, 11/2009, A5E02486791-01

Table of contents

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

1 Quick review............................................................................................................................................. . 7

1.1 Basic information about how the CPU works............................................................................... ..8

1.1.1 Tasks performed every scan cycle .............................................................................................. ..8

1.1.2 Operating modes of the CP U.................................................................................................... ... ..9

1.1.3 Digital data stored in bits, bytes, words and more....................................................................... 10

1.1.4 Data types supported by the S7-1200 ......................................................................................... 11

1.1.5 Memory areas of the S7-1200 ..................................................................................................... 12

1.2 From schematic diagram to user program................................................................................... 13

1.2.1 Converting the schematic to LAD instructions............................................................................. 14

1.2.2 Basic electrical circuits................................................................................................................. 16

1.3 Basic features of STEP 7 Basic................................................................................................... 18

1.3.1 Help when you need it ................................................................................................................. 19

1.3.2 Printing from the online help........................................................................................................ 20

1.3.3 Inserting instructions.................................................................................................................... 21

1.3.4 Dragging and dropping between editors...................................................................................... 22

1.3.5 Detecting the configuration of a CPU .......................................................................................... 23

1.3.6 Changing the settings for the work area...................................................................................... 24

2 Installation ............................................................................................................................................... 25

2.1 Read this first for safety information ............................................................................................ 25

2.2 Dimensions and guidelines.......................................................................................................... 26

2.3 Connecting the hardware............................................................................................................. 27

2.4 Installing STEP 7 Basic................................................................................................................ 28

3 Create a simple latch circuit..................................................................................................................... 29

3.1 Create a project for your user program........................................................................................ 30

3.2 Create a simple network in your user program............................................................................ 31

3.3 Enter the tags and addresses for the instructions ....................................................................... 33

3.4 Configure the CPU....................................................................................................................... 35

3.5 Download the user program to the CPU...................................................................................... 37

3.6 Test the operation of your sample user program......................................................................... 38

3.7 Reviewing the tasks for the first exercise .................................................................................... 39

4 Complete the user program..................................................................................................................... 41

4.1 Add an on-delay timer to delay the start of an output.................................................................. 42

4.2 Turn on an output for 5 seconds.................................................................................................. 45

4.3 Editing your user program for a different structure...................................................................... 48

Getting started with S7-1200

Getting Started, 11/2009, A5E02486791-01

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