S7-300_man_e.pdf

Contents

Preface

SIMATIC

Quick Guide

Product Overview

S7-300

Programmable Controller

Configuring

Hardware and Installation

Installation

Wiring

Manual

Addressing

Commissioning

Maintenance

Testing functions, Diagnostics

and Fault Elimination

Appendix

Glossary

Index

This manual is part of the documentation

package with order number:

6ES7398-8FA10-8BA0

Edition 10/2001

A5E00105492-01

Safety Guidelines

This manual contains notices intended to ensure personal safety, as well as to protect the products and

connected equipment against damage. These notices are highlighted by the symbols shown below and

graded according to severity by the following texts:

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 can result if proper precautions are not taken.

Caution

indicates that property damage can result if proper precautions are not taken.

Note

draws your attention to particularly important information on the product, handling the product, or to a

particular part of the documentation.

Qualified Personnel

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 HMI® and SIMATIC NET® are registered trademarks of SIEMENS AG.

Third parties using for their own purposes any other names in this document which refer to trademarks might

infringe upon the rights of the trademark owners.

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.

Disclaimer of Liability

We have checked the contents of this manual for agreement with

the hardware and software described. Since deviations cannot be

precluded entirely, we cannot guarantee full agreement. However,

the data in this manual are reviewed regularly and any necessary

corrections included in subsequent editions. Suggestions for

improvement are welcomed.

Siemens AG

Bereich Automatisierungs- und Antriebstechnik

Geschaeftsgebiet Industrie-Automatisierungssysteme

Postfach 4848, D- 90327 Nuernberg

©Siemens AG 2001

Technical data subject to change.

Siemens Aktiengesellschaft

A5E00105492

Contents

1 1 Preface

1-1

2 2 Quick Guide

2-1

2.1

Quick Guide: selecting and arranging .............................................................. .2-1

2.2

Quick Guide: Installation .................................................................................. .2-4

3 3 Product overview

3-1

3.1

Product overview.............................................................................................. .3-1

4 4 Configuring

4-1

4.1 In this Chapter .................................................................................................. .4-1

4.2 Basics............................................................................................................... .4-1

4.3 Component dimensions ................................................................................... .4-4

4.4 Arranging modules on a single module rack..................................................... 4-7

4.5 Arranging modules on multiple module racks ................................................... 4-9

4.6 Selection and installation of cabinets............................................................. .4-11

4.7 Sample application: Selecting a cabinet ......................................................... 4-13

4.8 Electrical assembly, protective measures and grounding.............................. .4-14

4.8.1 Grounding conception and overall structure .................................................. .4-14

4.8.2 S7-300 installation with grounded reference potential.................................... 4-15

4.8.3 S7-300 assembly with floating reference potential

(not CPU 312 IFM and CPU 31xC) ................................................................ .4-16

4.8.4 Isolated or non-isolated modules? ................................................................. .4-18

4.8.5 Grounding....................................................................................................... .4-21

4.8.6 Overview: Grounding ..................................................................................... .4-23

4.9 Selecting the load power supply unit ............................................................. .4-26

4.10 Configuring a subnet ...................................................................................... .4-28

4.10.1 Expansion and networking options ................................................................ .4-28

4.10.2 Basics............................................................................................................. .4-30

4.10.3 Interfaces........................................................................................................ .4-32

4.10.4 Network components ..................................................................................... .4-34

4.10.5 Cable length ................................................................................................... .4-38

4.10.6 Network samples............................................................................................ .4-40

5 5 Installation

5-1

5.1

Installation ........................................................................................................ .5-1

5.2

Installing the profile rail .................................................................................... .5-3

5.3

Installing modules on the profile rail................................................................. .5-7

5.4

Label the modules ............................................................................................ .5-8

S7-300 Programmable Controller Hardware and Installation

A5E00105492-01

iii

Contents

6 6 Wiring

6-1

6.1

Wiring ............................................................................................................... .6-1

6.2

Bonding the protective conductor to the profile rail........................................... 6-4

6.3

Adjusting the power supply module to mains voltage ....................................... 6-5

6.4

Wiring the power supply module and the CPU ................................................. 6-6

6.5

Wiring front connectors ..................................................................................... 6-8

6.6

Inserting front connectors into modules ......................................................... .6-11

6.7

Labeling the module I/Os ............................................................................... .6-12

6.8

Connecting shielded cables to the shielding contact element ....................... .6-13

6.9

Wiring the bus connector ............................................................................... .6-16

7 7 Addressing

7-1

7.1

Addressing ....................................................................................................... .7-1

7.2

Slot-defined addressing of modules.................................................................. 7-1

7.3

User-defined addressing of modules ................................................................ 7-3

7.4

Addressing signal modules ............................................................................... 7-3

7.5

Addressing the integrated I/O of the CPU......................................................... 7-6

7.6

Consistent data .............................................................................................. .7-10

8 8 Commissioning

8-1

8.1

In this Chapter .................................................................................................. .8-1

8.2

Commissioning procedure ................................................................................ 8-1

8.3

The commissioning checklist ............................................................................ 8-4

8.4

Insert the backup battery or rechargeable battery ............................................ 8-6

8.5

Inserting or replacing a Memory Card or Micro Memory Card.......................... 8-7

8.6

Commissioning modules ................................................................................... 8-9

8.6.1

Connecting the PG ........................................................................................... .8-9

8.6.2

Initial power on. .............................................................................................. .8-13

8.6.3

Resetting CPU memory ................................................................................. .8-13

8.6.4

Starting SIMATIC Manager ............................................................................ .8-19

8.6.5

Monitoring and controlling I/Os ...................................................................... .8-20

8.7

Commissioning PROFIBUS-DP ..................................................................... .8-24

8.7.1

Commissioning PROFIBUS-DP ..................................................................... .8-24

8.7.2

Commissioning the CPU as DP Master ......................................................... .8-26

8.7.3

Commissioning the CPU as DP slave............................................................ .8-29

8.7.4

Direct data exchange ..................................................................................... .8-34

9 9 Maintenance

9-1

9.1

In this Chapter .................................................................................................. .9-1

9.2

Operating System Backup ................................................................................ 9-2

9.3

Updating the Operating System ........................................................................ 9-3

9.4

Module replacement.......................................................................................... 9-5

9.5

Replacing the backup/rechargeable battery

(not CPU 312 IFM and CPUs 31xC) ................................................................. 9-8

9.6

Digital output module AC 120/230 V: Replacing the fuses ............................ .9-11

S7-300 Programmable Controller Hardware and Installation

A5E00105492-01

Contents

10 10 Testing functions, Diagnostics and Fault Elimination

10-1

10.1 In this Chapter ................................................................................................ .10-1

10.2 Overview: Testing functions ........................................................................... .10-1

10.3 Overview: Diagnostics.................................................................................... .10-4

10.4 Diagnostic options with STEP 7 ..................................................................... .10-5

10.5 Diagnostics with LEDs ................................................................................... .10-6

10.6 Diagnostics of DP CPUs .............................................................................. .10-12

10.6.1 Diagnostics of DP CPUs operating as DP master ....................................... .10-12

10.6.2 Diagnostics of DP CPUs operating as DP Slave ......................................... .10-14

10.6.3 Interrupts at the DP master .......................................................................... .10-21

10.6.4 Structure of slave diagnostic data ................................................................ .10-22

11 11 Appendix

11-1

11.1 Installation ...................................................................................................... .11-1

11.1.1 General rules and regulations for S7-300 operation ...................................... .11-1

11.2 protection against electromagnetic interference ............................................ .11-3

11.2.1 Basic points for system installations conforming with EMC requirements..... .11-3

11.2.2 Five basic rules for insuring EMC .................................................................. .11-6

11.2.3 EMC compatible installation of PLC............................................................... .11-7

11.2.4 Examples of an EMC compatible installation................................................. .11-8

11.2.5 Shielding of cables ....................................................................................... .11-12

11.2.6 Equipotential bonding................................................................................... .11-13

11.2.7 Cable routing inside buildings ...................................................................... .11-14

11.2.8 Outdoor cable routing................................................................................... .11-17

11.3 Lightning and surge protection..................................................................... .11-18

11.3.1 Overview ...................................................................................................... .11-18

11.3.2 Lightning protection zone conception .......................................................... .11-19

11.3.3 Rules for the transition point between lightning protection zones 1............. .11-20

11.3.4 Rules for the transition points between lightning protection

zones 1 <-> 2 and higher ............................................................................. .11-23

11.3.5 Sample of a surge protection circuit for networked S7-300 PLCs ............... .11-26

11.3.6 How to protect digital output modules against inductive surge voltage ........ 11-28

11.4

Safety of electronic control equipment......................................................... .11-30

12 12 Glossary

12-1

13 Index

S7-300 Programmable Controller Hardware and Installation

A5E00105492-01

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