Siemens S7-300 installation guide

SIEMENS

SIMATIC

S7-300

CPU 31xC and CPU 31x:

Installation

Operating Instructions

Preface

Guide to the S7-300 documentation 1

Installation Sequence 2

S7-300 components 3

Configuring 4

Installing 5

Wiring 6

Addressing 7

Commissioning 8

Maintenance 9

Debugging functions, diagnostics and troubleshooting 10

General technical specifications 11

Appendix A

This manual is part of the documentation package with order number:
6ES7398-8FA10-8BA0

03/2011
A5E00105492-12

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.

이 기기는 업무용(A급) 전자파 적합기기로서 판매자 또는 사용자는 이 점을 주의하시기 바라며 가정 외의 지역에서 사용하는 것을 목적으로 합니다.

Siemens AG Industry Sector Postfach 48 48 90026 NÜRNBERG GERMANY

A5E00105492-12 © 04/2011

Copyright © Siemens AG 2011. Technical data subject to change

Preface

Purpose of this manual

This manual contains essential information about the following:

• Installation
• Communication
• Memory concept
• Cycle and response times
• Technical specifications of the CPUs.

Basic knowledge required

• In order to understand this manual, you require a general knowledge of automation engineering.
• You require knowledge of STEP 7 basic software.

Scope

The name CPU 31xC summarizes all compact CPUs, as table below shows:

The name CPU 31x summarizes all standard CPUs, as table below shows:

3

Preface

All CPUs with PROFINET properties are grouped under the designation CPU 31x PN/DP, as the following table shows:

Note

A description of the special features of the failsafe CPUs of the S7 product range is available in the product information at the following Internet address (http://support.automation.siemens.com/WW/view/en/11669702/133300).

Note

We reserve the right to include a product Information containing the latest information on new modules or modules of a more recent version.

Changes in comparison to the previous version

The following table contains changes from the previous versions of the following documentation from the S7-300 documentation package:

• Technical specifications manual, version 06/2010
• Operating instructions for installation, version 06/2010

The CPU- 314C-2 PN/DP has been added in delivery stage V3.3. It has the same functionalities as the CPU 314C-2 DP and also has PROFINET functionalities such as those of the CPU 315-2 PN/DP.

In delivery stage V3.3, the functionality and performance of all C-CPUs and the CPU 317-2 DP were improved compared to their predecessor versions.

Additional information was taken from the chapter "Information on converting to a CPU 31xC or CPU 31x". If you required more information, however, please refer to the FAQs () on the Internet.

Operating Instructions, □□/□□□□, A5E00105492-12 5

Preface

6

Preface

Standards and certifications

For information about standards and approvals, see the section "General technical specifications (Page 251)".

Recycling and disposal

Because they have ecologically compatible components, the devices described in this manual can be recycled. For environment-friendly recycling and disposal of your old equipment, contact a certified disposal facility for electronic scrap.

Service & Support on the Internet

In addition to our documentation, we offer a comprehensive knowledge base online on the Internet (http://www.siemens.com/automation/service&support).

There you will find:

• Our newsletter containing up-to-date information on your products
• The latest documents in the Siemens Service & Support (http://www.siemens.com/automation/service&support) search engine.
• A forum for global information exchange by users and specialists.
• Your local representative for automation and drives in our contact database
• Information about on-site services, repairs, spare parts, and lots more.
• Applications and tools for the optimized use of the SIMATIC S7. For example, Siemens also publishes DP and PN performance measurements on the Internet (http://www.siemens.com/automation/pd).

7

Preface

8

Table of contents

• Preface ........ 3
• 1 Guide to the S7-300 documentation ........ 15
•   1.1 Documentation classification ........ 15
•   1.2 Guide to the S7-300 documentation ........ 20
• 2 Installation Sequence ........ 23
• 3 S7-300 components ........ 25
•   3.1 Example of an S7-300 configuration ........ 25
•   3.2 Overview of the most important S7-300 modules ........ 26
• 4 Configuring ........ 29
•   4.1 Overview ........ 29
•   4.2 Basic configuration principles ........ 29
•   4.3 Component dimensions ........ 32
•   4.4 Specified clearances ........ 34
•   4.5 Arrangement of modules on a single rack ........ 35
•   4.6 Distribution of modules to several racks ........ 36
•   4.7 Selection and installation of cabinets ........ 39
•   4.8 Example: Selecting a cabinet ........ 41
•   4.9 Electrical assembly, protective measures and grounding ........ 43
•     4.9.1 Grounding concept and overall structure ........ 43
•     4.9.2 Installing an S7-300 with grounded reference potential ........ 44     4.9.3 Installing an S7-300 with ungrounded reference potential (not CPU 31xC) ... 45
•     4.9.4 Isolated or non-isolated modules? ........ 46
•     4.9.5 Grounding measures ........ 49
•     4.9.6 Overview: Grounding ........ 52
•   4.10 Selection of the load power supply ........ 54
•   4.11 Planning subnets ........ 56
•     4.11.1 Overview ........ 56
•     4.11.2 Configuring MPI and PROFIBUS subnets ........ 58
•       4.11.2.1 Overview ........ 58
•       4.11.2.2 Basic information relating to MPI and PROFIBUS subnets ........ 58
•       4.11.2.3 Multi-Point Interface (MPI) ........ 61
•       4.11.2.4 PROFIBUS DP interface ........ 62
•       4.11.2.5 Network components of MPI/DP and cable lengths ........ 63
•       4.11.2.6 Cable lengths of MPI and PROFIBUS subnets ........ 68

9

Table of contents

• 4.11.3 Configuring PROFINET subnets ........ 73

• 4.11.3.1 Overview ........ 73

• 4.11.3.2 PROFINET devices ........ 73

• 4.11.3.3 Integration of fieldbuses into PROFINET ........ 77

• 4.11.3.4 PROFINET IO and PROFINET CBA ........ 78

• 4.11.3.5 PROFINET cable lengths and network expansion ........ 85

• 4.11.3.6 Connectors and other components for Ethernet ........ 88

• 4.11.3.7 Example of a PROFINET subnet ........ 88

• 4.11.3.8 PROFINET IO System ........ 90

• 4.11.4 Routed network transitions ........ 92

• 4.11.5 Point-to-point (PtP) ........ 94

• 4.11.6 Actuator/sensor interface (ASI) ........ 94

• 5 Installing ........ 95

• 5.1 Installing an S7-300 ........ 95

• 5.2 Installing the mounting rail ........ 97

• 5.3 Installing modules on the mounting rail ........ 100

• 5.4 Labeling modules ........ 102

• 6 Wiring ........ 105

• 6.1 Requirements for wiring the S7-300 ........ 105

• 6.2 Bonding the Protective Conductor to the Mounting Rail ........ 107

• 6.3 Adjusting the power supply module to local mains voltage ........ 108

• 6.4 Wiring the power supply module and the CPU ........ 109

• 6.5 Wiring front connectors ........ 111

• 6.6 Plugging the front connectors into modules ........ 114

• 6.7 Wiring I/O modules and compact CPUs with Fast Connect ........ 115

• 6.8 Labeling the module I/Os ........ 120

• 6.9 Terminating shielded cables on the shield connection element ........ 121

• 6.10 Wiring bus connectors ........ 124

• 6.10.1 MPI/PROFIBUS bus connector ........ 124

• 6.10.2 Setting up the terminating resistor on the PROFIBUS connector ........ 125

• 6.10.3 PROFINET bus connector ........ 126

• 7 Addressing ........ 127

• 7.1 Slot-specific addressing of modules ........ 127

• 7.2 User-specific addressing of modules ........ 129

• 7.2.1 User-specific addressing of modules ........ 129

• 7.2.2 Addressing digital modules ........ 130

• 7.2.3 Addressing analog modules ........ 131

• 7.2.4 Addressing the integrated I/Os of CPU 31xC ........ 132

• 7.3 Addressing on PROFIBUS DP ........ 135

• 7.4 Addressing PROFINET IO ........ 136

• 7.5 Assigning IP address parameters and the device name ........ 137

Table of contents

• 8 Commissioning ........ 141
• 8.1 Overview ........ 141
• 8.2 Commissioning procedure ........ 141
• 8.2.1 Procedure: Commissioning the hardware ........ 141
• 8.2.2 Procedure: Software commissioning ........ 143
• 8.3 Commissioning check list ........ 145
• 8.4 Commissioning the Modules ........ 147
• 8.4.1 Inserting/replacing a Micro Memory Card ........ 147
• 8.4.2 Initial power on ........ 149
• 8.4.3 CPU memory reset by means of mode selector switch ........ 150
• 8.4.4 Formatting the Micro Memory Card ........ 154
• 8.4.5 Connecting the programming device (PG) ........ 155
• 8.4.5.1 Connect PG/PC to the integrated PROFINET interface of the CPU 31x PN/DP ........ 155
• 8.4.5.2 Connecting the PG to a node ........ 156
• 8.4.5.3 Connecting the PG to several nodes ........ 157
• 8.4.5.4 Using the PG for commissioning or maintenance ........ 158
• 8.4.5.5 Connecting a PG to ungrounded MPI nodes (not CPU 31xC) ........ 160
• 8.4.6 Starting SIMATIC Manager ........ 161
• 8.4.7 Monitoring and modifying inputs and outputs ........ 161
• 8.5 Commissioning PROFIBUS DP ........ 166
• 8.5.1 Commissioning the PROFIBUS DP network ........ 166
• 8.5.2 Commissioning the CPU as DP master ........ 168
• 8.5.3 Commissioning the CPU as DP Slave ........ 172
• 8.5.4 Direct data exchange ........ 178
• 8.6 Commissioning PROFINET IO ........ 180
• 8.6.1 Requirements ........ 180
• 8.6.2 Commissioning the PROFINET IO system ........ 181
• 8.6.3 Configuring the PROFINET IO system ........ 182
• 9 Maintenance ........ 189
• 9.1 Overview ........ 189
• 9.2 Backing up firmware on a SIMATIC Micro Memory Card ........ 189
• 9.3 Updating the firmware ........ 191
• 9.3.1 Firmware update using a Micro Memory Card ........ 192
• 9.3.2 Updating the firmware online (via networks) ........ 193
• 9.4 Backup of project data to a Micro Memory Card ........ 195
• 9.5 Resetting to the Delivery State ........ 197
• 9.6 Module installation/removal ........ 198
• 9.7 Digital output module: Changing fuses ........ 202
• 10 Debugging functions, diagnostics and troubleshooting ........ 205
• 10.1 Overview ........ 205
• 10.2 Reading out service data ........ 205
• 10.3 Identification and maintenance data of the CPU ........ 206
• 10.4 Overview: Debugging functions ........ 208

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Table of contents

• 10.5 Overview: Diagnostics ........ 212
• 10.6 Diagnostics functions available in STEP 7 ........ 216
• 10.7 Network infrastructure diagnostics (SNMP) ........ 217
• 10.8 Diagnostics using status and error LEDs ........ 219
• 10.8.1 Introduction ........ 219
• 10.8.2 Status and error displays of all CPUs ........ 219
• 10.8.3 Evaluating the SF LED in the case of software errors ........ 221
• 10.8.4 Evaluating the SF LED in the case of hardware errors ........ 222
• 10.8.5 Status and error indicators: CPUs with DP interface ........ 224
• 10.8.6 Status and error indicators: CPUs with PROFINET interface for the S7-300 ........ 226
• 10.8.7 Status and error indicators: PROFINET IO Devices ........ 229
• 10.9 Diagnostics of DP CPUs ........ 230
• 10.9.1 Diagnostics of DP CPUs operating as DP Master ........ 230
• 10.9.2 Reading out slave diagnostic data ........ 233
• 10.9.3 Interrupts on the DP Master ........ 238
• 10.9.4 Structure of the slave diagnostics when the CPU is operated as I-slave ........ 239
• 10.10 Diagnostics of PROFINET CPUs ........ 247
• 10.10.1 Diagnostics options of PROFINET IO ........ 247
• 10.10.2 Maintenance ........ 249
• 11 General technical specifications ........ 251
• 11.1 Standards and certifications ........ 251
• 11.2 Electromagnetic compatibility ........ 255
• 11.3 Transportation and storage conditions for modules ........ 257
• 11.4 Mechanical and climatic environmental conditions for S7-300 operation ........ 258 11.5 Specification of dielectric tests, protection class, degree of protection, and rated voltage
• of S7-300 ........ 260
• 11.6 Rated voltages of S7-300 ........ 260
• A Appendix ........ 261
• A.1 General rules and regulations for S7-300 operation ........ 261
• A.2 Protection against electromagnetic interference ........ 263
• A.2.1 Basic Points for EMC-compliant system installations ........ 263
• A.2.2 Five basic rules for securing EMC ........ 265
• A.2.2.1 1. Basic rule for ensuring EMC ........ 265
• A.2.2.2 2. Basic rule for ensuring EMC ........ 265
• A.2.2.3 3. Basic rule for ensuring EMC ........ 266
• A.2.2.4 4. Basic rule for ensuring EMC ........ 266
• A.2.2.5 5. Basic rule for ensuring EMC ........ 267
• A.2.3 EMC-compliant installation of automation systems ........ 267
• A.2.4 Examples of an EMC-compliant installation: Cabinet configuration ........ 269
• A.2.5 Examples of an EMC-compliant installation: Wall mounting ........ 270
• A.2.6 Cable shielding ........ 272
• A.2.7 Equipotential bonding ........ 273
• A.2.8 Cable routing inside buildings ........ 275
• A.2.9 Outdoor routing of cables ........ 277

Table of contents

• A.3 Lightning and surge voltage protection ........ 278
• A.3.1 Overview ........ 278
• A.3.2 Lightning protection zone concept ........ 279 A.3.3 Rules for the interface between the lightning protection zones 0 and 1 ...281 A.3.4 Rules for the interface between the lightning protection zones 1 and 2...284 A.3.5 Rules for the interface between the lightning protection zones 2 and 3..286
• A.3.6 Example: Surge protection circuit for networked S7-300 CPUs ........ 288
• A.3.7 How to protect digital output modules against overvoltages caused by inductance ........ 290
• A.4 Functional safety of electronic control equipment ........ 292
• Glossary ........ 295
• Index ........ 323

13

Table of contents

14

Guide to the S7-300 documentation

1.1 Documentation classification

Documentation classification

The documentation listed below is part of the S7-300 documentation package. You can also find this on the Internet and the corresponding entry ID.

Guide to the S7-300 documentation

1.1 Documentation classification

Additional information

You also require information from the following descriptions:

CPU 31xC and CPU 31x: InstallationOperating Instructions, 03/2011, A5E00105492-12

Guide to the S7-300 documentation

1.1 Documentation classification

CPU 31xC and CPU 31x: InstallationOperating Instructions, 03/2011, A5E00105492-12 17

Guide to the S7-300 documentation

1.1 Documentation classification

CPU 31xC and CPU 31x: InstallationOperating Instructions, 03/2011, A5E00105492-12

Guide to the S7-300 documentation

1.1 Documentation classification

Service & support on the Internet

Information on the following topics can be found on the Internet (http://www.siemens.com/automation/service):

• Contacts for SIMATIC (http://www.siemens.com/automation/partner)
• Contacts for SIMATIC NET (http://www.siemens.com/simatic-net)
• Training (http://www.sitrain.com)

19

Guide to the S7-300 documentation 1.2 Guide to the S7-300 documentation

1.2 Guide to the S7-300 documentation

Overview The following tables contain a guide through the S7-300 documentation.

Ambient influence on the automation system

Isolation

Communication between sensors/actuators and the PLC

Guide to the S7-300 documentation

1.2 Guide to the S7-300 documentation

The use of local and distributed IOs

Configuration consisting of the central controller and expansion units

CPU performance

21

Guide to the S7-300 documentation 1.2 Guide to the S7-300 documentation

Communication

Software

Supplementary features