Siemens SIMATIC PROFINET Function Manual

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PROFINET with STEP 7 V14

___________________

SIMATIC

PROFINET PROFINET with STEP 7 V14

Function Manual

09/2016

A5E03444486

Preface

Documentation guide

Description

Parameter assignment/addressing

Diagnostics

Functions

-AG

Page 3

Siemens AG Division Digital Factory Postfach 48 48 90026 NÜRNBERG GERMANY

A5E03444486-AG

Ⓟ

Legal information

Warning notice system

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

indicates that minor personal injury can result if proper precautions are not taken.

NOTICE

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

Qualified Personnel

personnel qualified

Proper use of Siemens products

WARNING

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

ambient conditions must be complied with. The information in the relevant documentation must be observed.

Trademarks

Disclaimer of Liability

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.

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.

The product/system described in this documentation may be operated only by task in accordance with the relevant documentation, 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.

Note the following:

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

All names identified by ® are registered trademarks of 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.

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.

for the specific

08/2016 Subject to change

Page 4

Preface

Purpose of the documentation

Basic knowledge required

Scope

This function manual provides an overview of the PROFINET communication system with SIMATIC STEP 7 V14.

STEP 7 V14 is integrated into the powerful graphical Totally Integrated Automation Portal (TIA Portal), the new integration platform for all automation software tools.

This function manual supports you in planning a PROFINET system. The manual is structured into the following subject areas:

● PROFINET basics

● PROFINET diagnostics

● PROFINET functions

The following knowledge is required in order to understand the manual:

● General knowledge of automation technology

● Knowledge of the industrial automation system SIMATIC

● Knowledge about the use of Windows-based computers

● Knowledge about how to use STEP 7 (TIA Portal)

This documentation is the basic documentation for all SIMATIC products from the PROFINET environment. The product documentation is based on this documentation.

The examples are based on the functionality of the S7-1500 automation system.

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Preface

Changes compared to previous version

Function

Applications

User benefits

line.

processing.

By sending the cyclic IO data in both directions in

with MRP.

performance.

demand.

Conventions

STEP 7:

Note

A note contains important information on the product, on handling of the product and on the section of the documentation to which you

Introduction to PROFINET

What is PROFINET IO?

Objectives of PROFINET

Within the framework of Totally Integrated Automation (TIA), PROFINET IO is the logical further development of:

● PROFIBUS DP, the established fieldbus and

● Industrial Ethernet

PROFINET IO is based on 20 years of experience with the successful PROFIBUS DP and combines the normal user operations with the simultaneous use of innovative concepts of Ethernet technology. This ensures the integration of PROFIBUS DP into the PROFINET world.

PROFINET IO as the Ethernet-based automation standard of PROFIBUS/PROFINET International defines a cross-vendor communication, automation, and engineering model.

The objectives of PROFINET:

● Industrial networking, based on Industrial Ethernet (open Ethernet standard)

● Compatibility of Industrial Ethernet and standard Ethernet components

● High robustness due to Industrial Ethernet devices. Industrial Ethernet devices are suited

to the industrial environment (temperature, noise immunity, etc.).

● Use of IT standards such as TCP/IP, http.

● Real-time capability

● Seamless integration of other fieldbus systems

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Description

Implementation of PROFINET in SIMATIC

PROFINET IO

STEP 7

2.1 Introduction to PROFINET

PROFINET is implemented in SIMATIC as follows:

● We have implemented communication between field devices in SIMATIC with

● Installation technology and network components are available as SIMATIC NET products.

● Ethernet standard protocol and procedures (e.g., SNMP = Simple Network Management

Protocol for network parameter assignment and diagnostics) are used for remote maintenance and network diagnostics.

Figure 2-1 PROFINET overview configuration

The STEP 7 engineering tool supports you in setting up and configuring an automation solution. STEP 7 provides a uniform application view over all bus systems.

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Description

Documentation from PROFIBUS & PROFINET International on the Internet

Overview of the most important documents and links

2.1.1

PROFINET terms

Definition: Devices in the PROFINET environment

2.1 Introduction to PROFINET

You will find numerous documents on the topic of PROFINET at the Internet address (http://www.profibus.com organization, which is also responsible for PROFINET.

Additional information can be found on the Internet (http://www.siemens.com/profinet).

) of the "PROFIBUS & PROFINET International" PROFIBUS user

A compilation of the most important PROFINET application examples, FAQs and other contributions in the Industry Online Support is available in this FAQ

(https://support.industry.siemens.com/cs/ww/en/view/108165711

In the PROFINET environment, "device" is the generic term for:

● Automation systems (PLC, PC, for example)

● Distributed I/O systems

● Field devices (for example, hydraulic devices, pneumatic devices)

● Active network components (for example, switches, routers)

● Gateways to PROFIBUS, AS interface or other fieldbus systems

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Description

PROFINET IO devices

Number

PROFINET

Explanation

①

PROFINET IO System

②

and output signals with field devices.

③

(PROFINET IO supervisor)

diagnostics

④

PROFINET/Industrial Ethernet

Network infrastructure

⑤

HMI (Human Machine Interface)

Device for operating and monitoring functions.

⑥

ed PROFINET IO functionality)

⑦

I-device

Intelligent IO device

2.1 Introduction to PROFINET

The following graphic shows the general names used for the most important devices in PROFINET. In the table below the graphic you can find the names of the individual components in the PROFINET IO context.

IO controller Device used to address the connected IO devices.

This means that: The IO controller exchanges input

Programming device / PC

IO device A distributed field device that is assigned to one of

Figure 2-2 PROFINET devices

PG/PC/HMI device used for commissioning and for

the IO controllers (e.g., Distributed IO, valve terminals, frequency converters, switches with integrat-

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Description

IO communication via PROFINET IO

IO controller - IO controller communication via PN/PN coupler

IO controller - I-device communication

IO controller - IO-device communication

2.1 Introduction to PROFINET

The inputs and outputs of distributed I/O devices are read and written by means of PROFINET IO using what is referred to as IO communication. The following figure provides an overview of IO communication by means of PROFINET IO.

Figure 2-3 IO communication via PROFINET IO

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Description

IO communication via PROFINET IO

Communication between ...

Explanation

receives data from these devices.

A fixed quantity of data is transferred cyclically between the user programs in CPUs of IO

via direct access.

A fixed quantity of data is cyclically transferred between the user programs in CPUs of IO

via direct access.

Basic terminology of communication

PROFINET communication

2.1 Introduction to PROFINET

Table 2- 1 IO communication via PROFINET IO

IO controllers and IO devices The IO controller sends data cyclically to the IO devices of its PROFINET IO system and

IO controller and I-device

controllers and I-devices. The IO controller does not access the I/O module of the I-device, but instead accesses

configured address ranges, i.e. transfer ranges, which may be located inside our outside the process image of the CPU of the I-device. If parts of the process image are used as transfer ranges, it is not permitted to use these for real I/O modules.

Data transfer takes place using load- and transfer operations via the process image or

IO controller and IO controller

controllers. A PN/PN coupler is required as additional hardware. The IO controllers mutually access configured address ranges, i.e. transfer ranges,

which may be located inside or outside the process image of the CPU. If parts of the process image are used as transfer ranges, it is not permitted to use these for real I/O modules.

Data transfer takes place using load- and transfer operations via the process image or

Network security (Page 36)

Functions (Page 93)

Communication (http://support.automation.siemens.com/WW/view/en/59192925

PROFINET communication takes place via Industrial Ethernet. The following transmission types are supported:

● Acyclic transmission of engineering and diagnostics data and interrupts

● Cyclic transmission of user data

The PROFINET-IO communication takes place in real-time.

For additional information on the real-time communication, refer to chapter Real-time communication (Page 157).

)

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Description

Transparent data access

①

Management level

②

Control level

③

Production level

2.1 Introduction to PROFINET

Access to process data from different levels of the factory is supported by PROFINET communication. By using Industrial Ethernet, standard mechanisms of communication and information technology such as OPC/XML can now be used along with standard protocols such as UDP/TCP/IP and HTTP in automation engineering. This allows transparent access from company management level directly to the data from the automation systems at the control level and production level.

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Figure 2-4 Access to process data

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Description

Update time

Watchdog time

Send clock

Relationship between the update time and send clock

Send clock

Update time

Reduction ratios

250 μs

250 μs to 128 ms

1,2, ..., 512

1 ms

1 ms to 512 ms

1,2, ..., 512

2 ms

2 ms to 512 ms

1,2, ..., 256

4 ms

4 ms to 512 ms

1,2, ..., 128

Additional information

2.1 Introduction to PROFINET

The update time is a time interval. IO controller and IO device/I-device exchange IO data cyclically in the IO system within this time interval. The update time can be configured separately for each IO device and determines the interval at which output data is sent from the IO controller to the IO device (output module/submodule) as well as input data from the IO device to the IO controller (input module/submodule).

STEP 7 calculates the update time automatically in the default setting for each IO device of the PROFINET IO system, taking into account the volume of data to be exchanged as well as the set send clock.

For additional information on the update time, refer to section Real-time communication (Page 157).

The watchdog time is the time interval that an IO controller or IO device permits, without receiving IO data. If the IO device is not supplied by the IO controller with data within the watchdog time, the device detects the missing frames and outputs substitute values. This is reported in the IO controller as a station failure.

In STEP 7, the watchdog time is made up from an integral multiple of the update time and can be set by the user.

The period of time between two consecutive communication cycles. The send clock is the shortest possible interval in data exchange.

The calculated update times are reduction ratios (1, 2, 4, 8, ..., 512) of the send clock. The minimum possible update time thus depends on the minimum send clock of the IO controller that can be set and the efficiency of the IO controller and IO device. Depending on the send clock, it can be that only some of the reduction ratios are available (STEP 7 guarantees this through a pre-selection).

The following tables illustrate the dependency of the update time that can be set on the send clock, using an example of the CPU 1516-3 PN/DP. The update times satisfy the requirements of the PROFINET standard IEC 61158.

Table 2- 2 With real-time communication the following applies:

500 μs 500 μs to 256 ms 1,2, ..., 512

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For information on real-time communication, refer to the section Real-Time Communication (RT) (Page 158).

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Description

2.1.3

PROFINET interface

Overview

Properties

Identification and numbering of the interfaces and ports

Element

Symbol

Interface number

Interface

In ascending order starting from number 1

(for each interface)

Ring port

Examples of identification

Sample labeling

Interface number

Port number

X2 P1

X1 P2

X1 P1 R

1 (ring port)

2.1 Introduction to PROFINET

PROFINET devices of the SIMATIC product family have one or more PROFINET interfaces (Ethernet controller/interface). The PROFINET interfaces have one or more ports (physical connection options).

In the case of PROFINET interfaces with multiple ports, the devices have an integrated switch.

PROFINET devices with two ports on one interface allow you to configure the system in a line or ring topology. PROFINET devices with three or more ports on one interface are also ideal for setting up tree topologies.

Properties and rules for naming the PROFINET interface and its representation in STEP 7 are explained in the following.

Every PROFINET device on the network is uniquely identified via its PROFINET interface. For this purpose, each PROFINET interface has:

● A MAC address (factory default)

● An IP address

● A PROFINET device name

Interfaces and ports for all modules and devices in the PROFINET system are identified with the following characters:

Table 2- 3 Identification for interfaces and ports of PROFINET devices

Port P In ascending order starting from number 1

Three examples illustrate the rules for identifying PROFINET interfaces:

Table 2- 4 Examples for identifying PROFINET interfaces

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Description

Representation of PROFINET Interfaces in the Topology Overview in STEP 7

Number

Description

①

PROFINET interface of an IO controller in STEP 7

②

PROFINET interface of an IO device in STEP 7

③

These lines represent the PROFINET interface.

④

These lines represent the "ports" of a PROFINET interface.

Schematic Representation of a PROFINET Interface with Integrated Switch

2.1 Introduction to PROFINET

You can find the PROFINET interface in the topology overview in STEP 7. The PROFINET interface for an IO controller and an IO device is represented as follows in STEP 7:

Figure 2-5 Representation of the PROFINET interfaces in STEP 7

The following schematic diagram shows the PROFINET interface with integrated switch and its ports for all PROFINETdevices.

Figure 2-6 PROFINET interface with integrated switch

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Description

Functional differences of the PROFINET interfaces

PROFINET interface (X1)

PROFINET interface (X2)

2 ports with PROFINET IO functionality:

1 port with PROFINET IO functionality:

PG communication

HMI communication

S7 communication

Time-of-day synchronization

Web server

Open communication

OPC UA server

IO controller

I-device

IRT

Isochronous mode

Media redundancy

Prioritized startup

Additional Information on the Functionality of PROFINET interfaces

2.1 Introduction to PROFINET

PROFINET interfaces can provide different functions. PROFINET interface functions include identification, configuration, diagnostics and communication services (e.g., open communication). PROFINET interfaces that provide PROFINET IO functions and network security functions are also available.

The following table illustrates the differences using the example of the CPU 1516-3 PN/DP (as of firmware version V2.0), which features two PROFINET interfaces with different functionality.

Table 2- 5 Differences between the PROFINET interfaces of the CPU 1516-3 PN/DP (as of firm-

ware version V2.0)

Identification, configuration and diagnostics

You can find information on the number and functionality of the interfaces of a PROFINET device in the documentation for the specificPROFINET device.

PROFINET communication services are described in the Communication function manual.

In the Network security section you can find components that are used to protect networks against hazards.

The Functions section describes the PROFINET IO functions.

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Description

2.1.4

Implementation of the PROFINET device model in SIMATIC

Slots and modules

Number

Description

①

Slot with bus interface

②

Slot with module

③

Subslot with submodule

④

Channel

2.1 Introduction to PROFINET

A PROFINET device can have a modular and compact structure. A modular PROFINET device consists of slots into which the modules are inserted. The modules have channels which are used to read and output process signals. A compact device has the same design and can include modules, however, it cannot be physically expanded, which means that no modules can be inserted.

This is illustrated by the following graphic.

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Figure 2-7 Configuration of a PROFINET device

A module can contain multiple submodules.

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Description

Representation of PROFINET Device Model in the Device View of STEP 7

2.2

Setting up PROFINET

Contents of this chapter

Physical connections of industrial networks

2.2 Setting up PROFINET

The following figure shows the representation of the PROFINET device model in the device view of STEP 7, based on the example of a distributed I/O system ET 200MP:

Figure 2-8 PROFINET device model in the device view of STEP 7

The following chapter provides background information on building your communication network.

● Overview of the most important passive network components: These are network

components that forward a signal without the possibility of actively influencing it, for example, cables, connectors, etc.

● Overview of the most important active network components: These are network

components that actively affect a signal, for example switches, routers, etc.

● Overview of the most common network structures (topologies).

PROFINET devices can be networked in industrial systems in two different physical ways:

● Connected line

– By means of electrical pulses via copper cables

– By means of optical pulses via fiber-optic cables

● Wireless via wireless network using electromagnetic waves

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Description

Fast Ethernet

Industrial Ethernet

2.2.1

Active Network Components

Introduction

Switched Ethernet

Switches

2.2 Setting up PROFINET

PROFINET devices and cabling technology in SIMATIC are suited for industrial use, as they are based on Fast Ethernet and Industrial Ethernet.

●

You can use Fast Ethernet to transfer data at a speed of 100 Mbps. This transmission technology uses the 100 Base-T standard for this.

●

Structure of Ethernet in industrial environment.

The biggest difference from standard Ethernet is the mechanical current carrying capacity and noise immunity of the individual components.

The following active network components are available for PROFINET:

● Switch

● Router

PROFINET IO is based on switched Ethernet with full-duplex operation and a bandwidth of 100 Mbps. In this way, the network can be used much more efficiently through the simultaneous data transfer of several devices. The PROFINET IO frames are processed with high priority.

Switches are network components used to connect several terminal devices or network segments in a local network (LAN).

For the communication of a device with several other devices on PROFINET, the device is connected to the port of a switch. Other communication devices (including switches) can then be connected to the other ports of the switch. The connection between a communication device and the switch is a point-to-point connection.

A switch has the task of receiving and distributing frames. The switch "learns" the Ethernet address(es) of a connected PROFINET device or additional switches and only forwards those frames that are intended for the connected PROFINET device or the connected switch.

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Description

Switch variants

Selection Guide for Switches

Switches of the SCALANCE product family

2.2 Setting up PROFINET

Switches are available in two models:

● Integrated into a PROFINET device

For PROFINET devices with multiple ports (two or more), we are dealing with devices with an integrated switch (for example, CPU 1516-3 PN/DP).

● As autonomous device (for example, switches of the SCALANCE product family)

To use PROFINET with the RT class "RT", you can use any switch of "PROFINET Conformance Class A" or higher. All switches of the SCALANCE product family meet these requirements.

If you want to use PROFINET functions that provide an additional value, such as topology recognition, diagnostics, device exchange without exchangeable medium/programming device, you have to use a switch of the "PROFINET Conformance Class B" or higher.

To use PROFINET with the RT class "IRT", you must use a switch of "PROFINET Conformance Class C". With switches of the SCALANCE product family, watch out for the catalog feature "IRT PROFINET IO switch".

To select appropriate switches, we recommend the SIMATIC NET Selection Tool on the Internet (http://support.automation.siemens.com/WW/view/en/39134641

Use the switches of the SCALANCE product family if you want to use the full scope of PROFINET. They are optimized for use in PROFINET IO.

In the SCALANCE X device family, you will find switches with electrical and optical ports and with a combination of both variants. SCALANCE X202-2IRT, for example, has two electrical ports and two optical ports and supports IRT communication.

Beginning with the SCALANCE X200, you can configure, diagnose and address switches of the SCALANCE X device series as PROFINET IO devices using STEP 7.

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Description

Router

Note

If devices need to communicate beyond the limits of a network, you must configure router so that it allows this communication to take place.

2.2.2

Cabling technology

Cables for PROFINET

Simple method for the prefabrication of twisted pair cables

Note

A maximum of four plug

2.2 Setting up PROFINET

A router connects separated network segments with each other (e.g. management level and control level). The volume of data volume must be coordinated with the services of the respective network segment. A router also separates two networks and acts as a mediator between both networks. It thus reduces the network load. Routing functionality is provided in the SCALANCE X device family, with SCALANCE X300 or higher.

Communication devices on different sides of a router can only communicate with one another if you have explicitly enabled communication between them via the router.

If you want to access manufacturing data directly from SAP, for example, use a router to connect your Industrial Ethernet in the factory with the Ethernet in your office.

the

Information on routing with STEP 7 is available in the function manual Communication (http://support.automation.siemens.com/WW/view/en/59192925

Electrical and optical cables are available for PROFINET. The type of cable depends on the data transfer requirements and on the ambient conditions.

When you set up your PROFINET system, you can cut the twisted-pair cable to the required length on site, strip it with the

Ethernet Fast Connect RJ45 plugs

stripping tool

using the cut-and-clamp method. For more information on installation, refer to the installation instructions in the "SIMATIC NET Industrial Ethernet Network Manual" (http://support.automation.siemens.com/WW/view/en/8763736

-in pairs are allowed between two switches per Ethernet path.

(for Industrial Ethernet), and fit the

Industrial

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Description

Simple method for the prefabrication of fiber-optic cables

Simple method for the prefabrication of POF and PCF cables

Overview of transmission media with PROFINET

Physical properties

Connection methods

Cable type / transmission medium

standard

Transmission rate / mode

Max. segment length

devices)

Advantages

Electrical

IEEE 802.3

Optical

ISO/IEC 60793-2

2.2 Setting up PROFINET

The FastConnect FO cabling system is available for the easy, fast and error-free prefabrication of fiber-optic cables. The glass-fiber optic cable consists of:

● FC FO Termination Kit for SC and BFOC plug (cleave tool, Kevlar scissors, buffer grip, fiber remains container)

● FC BFOC Plug

● FC SC Duplex plug

● FO FC Standard cable

● FO FC Trailing cable

The following special tools provide an easy and safe way to prefabricate POF / PCF cables and fit the SC RJ POF plugs:

● POF cable

Prefabrication case IE Termination Kit SC RJ POF plug

● PCF cable

Prefabrication case IE Termination Kit SC RJ PCF plug

The following table summarizes the technical specifications of a PROFINET interface with integrated switch or an external switch, and possible transmission media.

Table 2- 6 Transmission media with PROFINET

RJ45 connector

ISO 60603-7

SCRJ 45

ISO/IEC 61754-24

100Base-TX 2x2 twisted, symmetrical and

shielded copper cable, CAT 5 transmission requirement

100Base-FX POF fiber-optic cable (Polymer

Optical Fiber, POF) 980/1000 µm (core diameter /

external diameter)

Plastic-cladded glass fiber (Polymer Cladded Fiber, PCF)

200/230 µm (core diameter / external diameter)

100 Mbps, full duplex

(between two

100 m Simple and cheap

cable connection

50 m Use when there

are large differences in potential

Insensitive towards electromagnetic radiation

100 m

Low line attenuation

Considerably longer segments possi-

ble

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Description

Physical properties

Connection methods

Cable type / transmission medium

standard

Transmission rate / mode

Max. segment length

devices)

Advantages

ISO/IEC 60793-2

ISO/IEC 9314-4

Electromagnetic waves

access devices

Applies for fiber-optic cables only

Wireless design

2.2.3.1

Basics

What is Industrial Wireless LAN?

Objectives and advantages of Industrial Wireless LAN

Application examples

2.2 Setting up PROFINET

In addition to data communication in accordance with the IEEE 802.11 standard, the SIMATIC NET Industrial Wireless LAN provides a number of enhancements which offer significant benefits for industrial customers. IWLAN is particularly suitable for demanding industrial applications that require reliable wireless communication. This is supported by the following properties:

● Automatic roaming when the connection to Industrial Ethernet is interrupted (Forced Roaming)

● Cost savings generated by using a single wireless network for reliable operation of a process with both process-critical data (alarm message, for example) and non-critical communication (service and diagnostics, for example)

● Cost-effective connection to devices in remote environments that are difficult to access

● Predictable data traffic (deterministic) and defined response times

● Cyclical monitoring of the wireless link (link check)

Wireless data transmission achieves the following objectives:

● Seamless integration of PROFINET devices into the existing bus system via the wireless interface

● Mobile use of PROFINET devices for different production-linked tasks

● Flexible configuration of the system components for fast development in accordance with

customer requirements

● Maintenance costs are minimized by savings in cables

● Communication with mobile subscribers (mobile controllers and devices, for example),

conveyor lines, production belts, translation stages , and rotating machines

● Wireless coupling of communication segments for fast commissioning or cost-effective networking where routing of wires is extremely expensive (e.g. public streets, railroad lines)

● Stacker trucks, automated guided vehicle systems and suspended monorail systems

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Description

Data transmission rate

2.2 Setting up PROFINET

The following graphic illustrates the many possible applications and configurations for SIMATIC device family wireless networks.

Figure 2-9 Application example for the use of Industrial Wireless LAN

In Industrial Wireless LAN, gross data transmission rates of 11 Mbps or 54 Mbps without full duplex are permitted.

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Description

Range

Note Range

The range can be consi used, the data rate, and the antennas on the send and receive sides.

2.2.3.2

Tips on assembly

Wireless networks, SCALANCE device family

Update time in STEP 7

2.2 Setting up PROFINET

With SCALANCE W (access points), wireless networks can be set up indoors and outdoors. Multiple access points can be installed to create large wireless networks in which mobile subscribers are transferred seamlessly from one access point to another (roaming).

As an alternative to a wireless network, point-to-point connections of Industrial Ethernet segments can also be set up over large distances (several hundred meters). In this case, the range and characteristics of the RF field are determined by the antennas used.

derably less, depending on spatial factors, the wireless standard

With PROFINET, you can also set up wireless networks with Industrial Wireless Local Area Network (IWLAN) technology. We recommend implementing the SCALANCE W device line for this.

If you set up PROFINET with Industrial Wireless LAN, you may have to increase the update time for the wireless devices. The IWLAN interface provides lower performance than the wired data network: Several communication stations have to share the limited transmission bandwidth. For wired solutions, 100 Mbps is available for each communication device.

The Update time parameter can be found in the "Realtime settings" section in the Inspector window of IO devices in STEP 7.

Figure 2-10 Update time in STEP 7

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Description

Additional information

2.2.4

Network security

2.2.4.1

Basics

Introduction

Requirements

2.2 Setting up PROFINET

More information about SCALANCE W Industrial Wireless LAN components can be found in the manual SIMATIC NET SCALANCE W-700 (http://support.automation.siemens.com/WW/view/en/42784493

More information about wired data transmission can be found in the manual SIMATIC NET Twisted Pair and Fiber Optic Networks (http://support.automation.siemens.com/WW/view/en/8763736

More information about wireless data transmission can be found in the manual Basics for configuring an industrial wireless LAN (http://support.automation.siemens.com/WW/view/en/9975764

You should also read the PROFINET installation guideline of the PROFIBUS User Organization on the Internet (

guide/downloads/profinet-installation-guide/display/). Various documents that assist with the

setting up of your PROFINET automation solution are available here:

● PROFINET planning guideline

● PROFINET installation guideline

● PROFINET commissioning guideline

http://www.profibus.com/nc/download/installation-

● Additional documents for setup of PROFINET

The topic of data security and access protection (Security) has become increasingly important in the industrial environment. The increased networking of entire industrial systems, vertical integration and networking of levels within a company and new techniques such as remote maintenance all result in higher requirements for protecting the industrial plant.

Data security solutions for office environments cannot simply be transferred one-to-one to industrial applications to protect against manipulation in sensitive systems and production networks.

Additional security requirements arise from the specific communication requirements in the industrial environment (real-time communication, for example):

● Protection against interaction between automated cells

● Protection of network segments

● Protection against faulty and unauthorized access

● Scalability of network security

● Must not influence the network structure

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Description

Definition of security

Threats

2.2 Setting up PROFINET

Generic term for all the measures taken to protect against:

● Loss of confidentiality due to unauthorized access to data

● Loss of integrity due to manipulation of data

● Loss of availability due to destruction of data, for example, through faulty configuration

and denial-of-service attacks

Threats can arise from external and internal manipulation. The loss of data security is not always caused by intentional actions.

Internal threats can arise due to:

● Technical errors

● Operator errors

● Defective programs

Added to these internal threats there are also external ones. The external threats are not really any different to the known threats in the office environment:

● Software viruses and worms

● Trojans

● Man-in-the-middle attacks

● Password Phishing

● Denial of Service

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Description

Protective measures

2.2.4.2

Network components and software

Protection against unauthorized access

Features

2.2 Setting up PROFINET

The most important precautions to prevent manipulation and loss of data security in the industrial environment are:

● Filtering and control of data traffic by means of firewall

● A virtual private network (VPN) is used to exchange private data on a public network

(Internet, for example).

The most common VPN technology is IPsec. IPsec (Internet Protocol Security) is a collection of security protocols that are used as the basis for the IP protocol at the mediation level and allow a secured communication via potentially unsecure IP networks.

● Segmenting in protected automation cells

This concept has the aim of protecting the lower-level network devices by means of security modules. A group of protected devices forms a protected automation cell.

● Authentication (identification) of the devices

The security modules identify each other over a safe (encrypted) channel using authentication procedures. It is therefore impossible for unauthorized parties to access a protected segment.

● Encrypting the data traffic

The confidentiality of data is ensured by encrypting the data traffic. Each security module is given a VPN certificate which includes the encryption key.

The following solutions may be used to connect industrial networks to the intranet and Internet to protect against internal and external threats:

● Communication processors, such as the SIMATIC CP 1543-1

● SCALANCE X-300 and SCALANCE S - the data security components of the

SIMATIC NET product family

● SOFTNET security client for use on PCs

Both of these products have a wide variety of features, such as:

● Easy integration of existing networks without configuration, with integrated firewall.

● Segmenting in protected automation cells

● Authentication (identification) of the devices

● Encrypting the data traffic

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Description

2.2.4.3

Application example

Data security at the office and production levels

2.2 Setting up PROFINET

The following graphic contains an application example with protected areas at different levels of the company created using SCALANCE S and the security client. The protected areas are highlighted in light gray.

Figure 2-11 Network configuration with the SCALANCE S security module and the SOFTNET security client

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Description

Additional information

2.2 Setting up PROFINET

Additional information on the configuration of a security standard in PROFINET, is available:

● In the PROFINET security guideline. These guidelines can be found on the homepage of the PROFIBUS user organization on the Internet (http://www.profinet.com

● In the Industrial Ethernet Security (http://support.automation.siemens.com/WW/view/en/56577508

● In the SCALANCE S and SOFTNET Security Client (http://support.automation.siemens.com/WW/view/en/21718449

You can find general information on industrial security concepts, functions and news on the Industrial Security website (http://www.siemens.com/industrialsecurity

) manual

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Configuring

Assigning parameters

To set up an automation system, you will need to configure, assign parameters and interlink the individual hardware components. In STEP 7, the work needed for this is undertaken in the device, topology and network view.

"Configuring" is understood to mean arranging, setting and networking devices and modules within the device, topology or network view.

An I/O address is automatically assigned to each module. The I/O addresses can be subsequently modified.

The CPU compares the configuration preset in STEP 7 with the actual current configuration of the system. In this way, potential errors can be detected and reported straight away.

The exact procedure for configuring devices is described in detail in the STEP 7 online help.

"Assigning parameters" is understood to mean setting the properties of the components used. The settings for the hardware components and for data communication are configured at the same time.

In STEP 7, you can "assign parameters" for the following settings PROFINET:

● Device names and IP address parameters

● Port interconnection and topology

● Module properties / parameters

The parameters are loaded into the CPU and transferred to the corresponding modules when the CPU starts up. Modules are easy to replace from spare parts, as the parameters assigned for the SIMATIC CPUs are automatically loaded into the new module at each startup.

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Parameter assignment/addressing

Adjusting the hardware to the project requirements

3.1

Assigning an IO device to an IO controller

PROFINET IO System

Requirement

3.1 Assigning an IO device to an IO controller

You need to configure hardware if you want to set up, expand or change an automation project. To do this, add hardware components to your structure, link these with existing components, and adapt the hardware properties to the tasks.

The properties of the automation systems and modules are preset such that in many cases they do not have to be assigned parameters again.

Parameter assignment is however needed in the following cases:

● You want to change the default parameter settings of a module.

● You want to use special functions.

● You want to configure communication connections.

A PROFINET IO system is comprised of a PROFINET IO controller and its assigned PROFINET IO devices. After these devices have been placed in the network or topology view, STEP 7 assigns default values for them. Initially, you only have to worry about the assignment of IO devices to an IO controller.

● You are in the network view of STEP 7.

● A CPU has been placed (e.g., CPU 1516-3 PN/DP).

● An IO device has been placed (e.g., IM 155-6 PN ST).

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Procedure

Result

Checking the assignment

3.1 Assigning an IO device to an IO controller

To assign IO devices to an IO controller, proceed as follows:

1. Place the pointer of the mouse over the interface of the IO device.

2. Press and hold down the left mouse button.

3. Move the pointer.

The pointer now uses the networking symbol to indicate "Networking" mode. At the same time, you see the lock symbol on the pointer. The lock symbol disappears only when the pointer is over a valid target position.

4. Now move the pointer onto the interface of the IO controller. You can keep the left mouse

button pressed or release it when performing this action.

5. Now release the left mouse button or press it again (depending on your previous action).

Figure 3-1 Assigning an IO device to an IO controller in the network view of STEP 7

You have assigned an IO device to an IO controller.

You can find an overview of the communication relationships in the "IO communication" tab in the tabular area of the network view. This table is context-sensitive for selection in the graphic area:

● Selection of the interface shows the I/O communication of the respective interface.

● Selection of the CPU shows all I/O communication of the CPU (including PROFIBUS).

● Selection of the station (as in the above figure) interface shows the I/O communication of

the complete station.

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3.2

Device name and IP address

Introduction

In STEP 7

3.2 Device name and IP address

In order that the PROFINET device can be addressed as node on PROFINET, the following are required:

● A unique PROFINET device name

● A unique IP address in the relevant IP subnet

STEP 7 assigns a device name during the arrangement of a PROFINET device in the hardware and network editor. The IP addresses are typically assigned automatically by STEP 7 and assigned to the devices based on the device name.

You can change the name and IP address manually.

You can find the device name and the IP address under "Ethernet addresses" in the properties of the PROFINET interface in the Inspector window.

Figure 3-2 Device name and IP address in STEP 7

The function, the assignment and the changing of the device name and the IP address are described in the following sections.

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3.2.1

Device name

Device names

Structured device names

3.2 Device name and IP address

Before an IO device can be addressed by an IO controller, it must have a device name. In PROFINET, this method was selected because it is simpler to work with names than with complex IP addresses.

The assignment of a device name for a specific IO device can be compared to setting the PROFIBUS address of a DP slave.

In delivery state, an IO device does not have a device name. A device name must first be assigned before an IO device can be addressed by an IO controller, for example, for transferring configuration data during startup or for exchanging user data in cyclic mode. You assign the device names to the IO device, for example, with the programming device / PC.

IO devices that have a slot for removable storage media provide the option of writing the device name directly to the removable storage medium in the programming device.

When a device is replaced by a device without removable medium, the IO controller assigns the device name based on topological configuration (see section Configuring topology (Page 59)).

The device name is automatically assigned by default for PROFINET devices S7-1200, S7-1500, ET 200MP, ET 200SP and ET 200AL when these are configured in STEP 7. The device names are formed from the name of the CPU or the name of the interface module. For devices with several PROFINET interfaces, the name of the interface is enhanced, for example, "plc_1.profinet-interface_2" or "io-device_1".

You can structure the device names using DNS conventions.

These conventions are defined by "Internationalizing Domain Names in Applications (IDNA). According to this, device names are written in lower case.

The "Domain Name System" (DNS) is a distributed database (http://iana.org manages the name space on the Internet. To structure the names, you use the dot ("."). The hierarchy is shown in ascending order from left to right.

...<Subdomain name>.<Domain name>.<Top-level domain name>

If the name is not DNS-compliant, the name will be converted by STEP 7, for example, to "plcxb1.profinet-schnittstellexb2022c" or "io-devicexb15b32".

), which

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Parameter assignment/addressing

Device number

3.2.2

IP address

Configuration of the IP address

3.2 Device name and IP address

In addition to the device name, STEP 7 also assigns a device number beginning with "1" when an IO device is allocated.

The device number is located in the Inspector window in the properties of the PROFINET interface, under "Ethernet addresses" in the area PROFINET.

Figure 3-3 Device number

This device number can be used to identify an IO device in the user program (for example, with the instruction "LOG2GEO").

To allow a PROFINET device to be addressed as a device on Industrial Ethernet, this device also requires an IP address that is unique within the network. The IP addresses are typically assigned automatically by STEP 7 and assigned to the devices based on the device name. If it is a standalone network, you can apply the IP address and subnet mask suggested by STEP 7. If the network is part of an existing Ethernet company network, obtain the information from your network administrator.

In accordance with Internet Protocol version 4 (IPv4), the IP address is made up of four decimal numbers with a range of values from 0 through 255. The decimal numbers are separated by periods (for example, 192.162.0.0).

The IP address consists of the following:

● Address of the network

● Address of the device (PROFINET interface of the IO controller/IO device)

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Generating IP addresses

Subnet mask

Example of the subnet mask

Default router

3.2 Device name and IP address

The IP addresses of the IO devices are generated by STEP 7 and first assigned to the IO devices when the CPU starts up. In addition, for some IO devices (e.g., SCALANCE X, S7-300 CPs), it is possible not to obtain the IP address during startup of the IO controller, but rather to set it beforehand on the device (see Permitting changes to the device name and IP address directly on the device (Page 57)).

The IP addresses of the IO devices always have the same subnet mask as the IO controller and are assigned from the IP address of the IO controller in ascending order. The IP address can be changed manually, if necessary.

For devices with several PROFINET interfaces (e.g., CPU 1516-3 PN/DP), the IP addresses must be located in different subnets.

The bits set in the subnet mask decide the part of the IP address that contains the address of the network.

In general, the following applies:

● The network address is obtained from the AND operation of the IP address and subnet

mask.

● The device address is obtained from the AND NOT operation of the IP address and

subnet mask.

Subnet mask: 255.255.0.0 (decimal) = 11111111.11111111.00000000.00000000 (binary)

IP address: 192.168.0.2 (decimal) = 11000000.10101000.00000000.00000010 (binary)

Meaning: The first 2 bytes of the IP address determine the network - i.e., 192.168. The last two bytes address the device, i.e. 0.2.

The default router is used when data has to be forwarded via TCP/IP or UDP to a partner located outside the local network.

In STEP 7, the default router is named Router. You can activate the use of a router in the Inspector window of a CPU with the "Use router" check box in the"IP protocol" section. STEP 7 assigns the local IP address to the default router by default.

The router address that is set on the PROFINET interface of the IO controller is automatically transferred for the configured IO devices.

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Parameter assignment/addressing

Relation between IP address and default subnet mask

IP address (decimal)

IP address (binary)

Address class

Default subnet mask

0 to 126

0xxxxxxx.xxxxxxxx....

255.0.0.0

192 to 223

110xxxxx.xxxxxxxx...

255.255.255.0

Note Range of values for the first decimal point

A value between 224 and 255 is also possible for the first decimal number of the IP address (address class D etc.). However, this is not recommended because there is no address check for

Masking other subnets

Masks

Decimal

Binary

00000000

Reading out an IP address in the user program

3.2 Device name and IP address

An agreement exists relating to the assignment of IP address ranges and so-called "Default subnet masks". The first decimal number (from the left) in the IP address determines the structure of the default subnet mask with respect to the number of "1" values (binary) as follows:

128 to 191 10xxxxxx.xxxxxxxx... B 255.255.0.0

these values.

You can use the subnet mask to add further structures and form "private" subnets for a subnet that is assigned one of the address classes A, B or C. This is done by setting other, less significant bits of the subnet mask to "1". For each bit set to "1", the number of "private" networks doubles and the number of devices they contain is halved. Externally, the network continues to function as an individual network.

Example:

You have a subnet of address class B (for example, IP address 129.80.xxx.xxx) and change the default subnet mask as follows:

Default subnet mask 255.255.0.0 11111111.11111111.00000000.

Subnet mask 255.255.128.0 11111111.11111111.10000000.

Result:

All devices with addresses from 129.80.001.000 to 129.80.127.254 are located in a subnet, all devices with addresses from 129.80.128.000 to 129.80.255.254 in a different subnet.

You can read out the IP address of a PROFINET device in the user program of a S7-1500 CPU. You can find information in this FAQ (https://support.industry.siemens.com/cs/ww/en/view/82947835

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3.2.3

Assigning a device name and IP address

Assigning an IP address and subnet mask for an IO controller for the first time

Using a programming device or PC:

Using the display of a S7-1500 CPU:

Using a memory card:

Assigning device names and IP address for "Device replacement without exchangeable medium/programming device"

3.2 Device name and IP address

You have the following options:

●

Connect your programming device/PC to the same network as the relevant PROFINET device. The interface of the programming device/PC must be set to TCP/IP mode. During the download, first of all display all available devices via the "Accessible devices" download dialog box. Select the target device via its MAC address and then assign its IP address before you download the hardware configuration including the configured IP address (IP address is saved retentively).

●

The S7-1500 CPUs have a front cover with a display and operating keys. You can use this display to assign or change the IP address. To set the IP address, navigate on the display via the menu items "Settings" > "Addresses" > "X1 (IE/PN)" > "Parameters".

●

If your PROFINET device is equipped for a memory card (Micro Memory Card/SIMATIC memory card), plug this into your programming device/PC and save the hardware configuration together with the configured IP address on this memory card. Then plug the memory card into the PROFINET device. Once inserted, the PROFINET device automatically applies the IP address.

If you have saved a configuration to the memory card with the "IP address is set directly at the device" option, you must assign the IP address using a different method after inserting the memory card (see section Permitting changes to the device name and IP address directly on the device (Page 57)).

For devices without exchangeable medium (e.g., ET 200MP, ET 200SP) and devices that support "Device replacement without exchangeable medium/PG" (e.g., ET 200S), the IO controller can identify the device without name from the neighbor relationships specified by the set topology and from actual neighbor relationships determined by the real PROFINET devices. The IO controller then assigns the PROFINET device the configured name and incorporates the PROFINET device in the user data traffic. (See also Device replacement without exchangeable medium (Page 193)).

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Parameter assignment/addressing

IP address assignment when replacing IO devices with exchangeable mediumPG

Procedure: Changing the device name using properties of the PROFINET interface

3.2 Device name and IP address

The following is contained on the memory card of the programmable logic controller:

● On the IO controller: Device name and IP address

● On the IO device: Device name

When you remove the memory card from a PROFINET device and insert it in another PROFINET device with exchangeable medium (e.g., ET 200S), device-specific information and the device name are loaded to the device.

If an IO device has to be replaced in its entirety due to a device or module defect, the IO controller automatically assigns parameters and configures the replaced device or module. The cyclic exchange of user data is then restarted. In addition to this, before the power ON of the IO device, the memory card with the valid name must be removed from the faulty IO device and added to the replaced device.

In the event of an error in the PROFINET device, the memory card allows you to replace a module without a programming device/PC. You can also transfer the device data directly from the programming device/PC to the memory card.

You can change the PROFINET name via the properties of the PROFINET interface. This is useful when the PROFINET device has not received its previous name from the automatic generation, for example, in the case of a migration.

1. In the network or device view of the STEP 7 hardware and network editor, select the PROFINET interface of a PROFINET device.

2. In the Inspector window, go to "Ethernet addresses" in the PROFINET area.

3. Clear the "Generate PROFINET device name automatically" check box.

4. Enter the new PROFINET device name in the relevant field.

Figure 3-4 Changing the device name of a PROFINET device in the properties

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Alternative procedure: Changing the device name of a PROFINET device in the network view

Procedure: Changing the IP address

3.2 Device name and IP address

Requirement: The "Generate PROFINET device name automatically" check box is selected.

1. In STEP 7, select the "Network overview" tab in the tabular area of the network view.

2. In the "Device" column, overwrite the name in the row of the relevant PROFINET device.

The name is also changed accordingly in the graphic area of the network view.

Figure 3-5 Changing the device name of a PROFINET device in STEP 7

To change the IP address, follow these steps:

1. In the network or device view of the STEP 7 hardware and network editor, select the

PROFINET interface of a PROFINET device.

2. In the Inspector window, go to "Ethernet addresses" in the "IP protocol" area.

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Downloading configured device name to IO device

3.2 Device name and IP address

3. Check that the option "Set IP address in the project" is selected.

4. Enter the new IP address in the relevant field.

Figure 3-6 Changing the IP address of a PROFINET device in STEP 7

To load the configured device names to the IO device, follow these steps:

1. Connect your programming device/PC to the same network as the relevant IO device. The interface of the programming device/PC must be set to TCP/IP mode.

2. In STEP 7, select the relevant IO device in the "Accessible devices" dialog based on the MAC address.

3. Click "Assign name" to download the configured device name to the IO device.

The IO controller recognizes the IO device automatically by its device name and automatically assigns the configured IP address to it.

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Identification of the PROFINET device

Online > Accessible devices...

Using an different way to assign IP addresses for IO devices

3.2 Device name and IP address

To clearly identify a device from several identical devices in a control cabinet, for example, you can flash the link LED of the PROFINET device.

To do this, select the menu command

in STEP 7. In the "Accessible devices" dialog, set the "PG/PC" interface by means of which you are connected to the devices. STEP 7 now automatically searches for the accessible devices and displays them in the "Accessible devices in target subnet" table. Select the desired PROFINET device and click on the "Flash LED" button. The PROFINET device is identified based on its MAC address.

Figure 3-7 "Accessible devices" dialog

Various IO devices, for example, SCALANCE X,S7-300 CPs, support the option of not having the IP addresses assigned by the IO controller during startup. In this case, the IP address is assigned in a different way. For additional information, refer to the manual of the respective PROFINET device of the SIMATIC device family.

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Additional information

3.2.4

Assign device name via communication table

Introduction

"Online assignment" tab

3.2 Device name and IP address

You can find a detailed description of the operation and functions of the display of the S7-1500 CPUs in the system manual S7-1500, ET 200MP

(http://support.automation.siemens.com/WW/view/en/59191792

You can assign the device names of PROFINET IO devices configured offline to the devices online. You can do this in the table area of the network view in the table "I/O communication". You can also assign the device names to several devices at the same time.

In the I/O communication table, you will find the tabs "Offline configuration" and "Online assignment". In the "Online assignment" tab, you can assign the PROFINET device names that were assigned offline to the corresponding IO devices online. To do this, use the buttons "Check devices" and "Assign now".

Figure 3-8 Assign device name via communication table

The objects displayed in the table of the "Online assignment" tab depend on the setting of the filter function. If only selected objects should be displayed, only objects of the corresponding context are displayed depending on the selection in the network view.

● PROFINET subnet: All connected devices and their PROFINET interfaces

● IO system All devices involved and their PROFINET interfaces

● Sync domain: All devices involved and their PROFINET interfaces

● Devices: The device and any existing PROFINET interfaces

● Other subnets or interfaces such as MPI or PROFIBUS are not displayed

If the display is set for all devices using the filter function, all devices are displayed that have a PROFINET interface, regardless of whether they are connected via a PROFINET subnet or are part of an IO system. Devices without a PROFINET interface, for example only with a DP or MPI interface, are not displayed.

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Parameter assignment/addressing

General procedure

Requirements

Procedure (step 1)

Note

You can enter, insert or import the is automatically entered in the cell. The following entries are supported and then converted to the required format:

•

The formats used in the exampl

Intermediate result

Status

Meaning

3.2 Device name and IP address

To assign PROFINET device names, you must first detect the IO devices available online. With this procedure, it matters whether the MAC addresses are known or unknown. This results in a general procedure in two steps:

1. Detecting the IO devices available online

2. Assigning configured PROFINET device names to the IO devices available online

● You are in the network view.

● There is an online connection to the devices.

To detect IO devices available online from the I/O communication table, follow these steps:

1. Optional: Entered known MAC addresses in the "MAC address" column. After every valid

entry, the check box under "Assign device" is selected for the relevant row.

2. Click "Check devices" to start the check of the IO devices available online.

3. Set the PG/PC interface in the dialog window and click "Start".

After the check, the result is displayed for every device in the table. Online data found is automatically entered in the table and the check box "Assign device" is set to "checked" in the rows in which a MAC address was entered or found online. The result of the check is shown as an icon in the "Status" column.

Matching device and compatible type

Matching device and incompatible type

MAC address in different formats. The correct format

"08:00:06:BA:1F:20" "08 00 06 BA 1F 20" "080006BA1F20"

e are automatically converted to "08-00-06-BA-1F-20".

Non-matching device

Device cannot be reached (with a known MAC address)

Ready for assignment (with known MAC address)

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Parameter assignment/addressing

Note

The icon "Ready for assignment" appears when a MAC address exists and matching device data was found, but no PROFINET device name was found online.

Procedure (step 2)

Note

The bulk operation cannot be reversed. A message to this effect appears in a dialog window.

Result

Importing and exporting data

3.2 Device name and IP address

You can update the data of the detected devices again via their MAC addresses at any time. To do this, you specify the MAC address and the status of the device is displayed immediately without having to re-detect the device.

All PROFINET device names configured offline will be assigned to the devices available online in a bulk operation.

1. Click the "Assign now" button.

2. Click "Start" in the dialog window to start the assignment of the PROFINET device names.

The PROFINET device names configured offline will be assigned to the devices available online. This relates to devices in whose row the check box under "Assign device" is selected, that have a MAC address and have the status "Ready for assignment".

Using the import and export button, you can import or export the data of the I/O communication table for the online assignment:

● When you export, the currently displayed data of the table is exported to a CSV file. Using the filter function of the table, you can select which data will be exported.

● When you import, the data of the CSV file is written to the table. If there are conflicts with values already existing in the table, you can decide whether the data should be overwritten or whether the import needs to be stopped.

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3.2.5

Permitting changes to the device name and IP address directly on the device

Introduction

Procedure

Note Gateway

When you operate a PROFINET device with the option "Allow adaption of the device name/IP address directly on device", you cannot use this PROFINET device as gateway for S7 routing.

3.2 Device name and IP address

Machines are frequently commissioned on site or integrated into the existing infrastructure without STEP 7. You can find typical applications in all areas of the series machine building. Alternative means for assigning the IP address are available for this.

1. In the network or device view of the STEP 7 Hardware and Network editor, select the

PROFINET interface of an IO controller.

2. Navigate in the Inspector window to "Ethernet addresses".

3. Select the "IP address is set directly at the device" option in the "IP protocol" area.

4. In the "PROFINET" area, select the " PROFINET device name is set directly at the

device" check box.

Figure 3-9 Setting the device name and IP address on the device

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Options for assigning IP addresses and device names

Additional information

3.2 Device name and IP address

Apart from the known address and device name assignment in the "Ethernet addresses" section of the Inspector window, there are other ways in which the IP address and name can be assigned:

● Assigning by means of the user program with the instruction "T_CONFIG"

● Assignment when downloading the configuration to the target system via the "Extended

download to device" dialog box.

● Assignment via the Primary Setup Tool (PST)

● Assignment via the PRONETA ("PROFINET network analysis") commissioning and

diagnostics tool

● Assignment via the SIMATIC Automation Tool

For information on the "T_CONFIG" instruction and on downloading to the target system, refer to the STEP 7 online help.

A free Download (http://support.automation.siemens.com/WW/view/en/14929629 Primary Setup Tool (PST) can be found on the Internet. On this Internet page, you will also find a list of devices for which the PST is approved.

) of the

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3.3

Configuring topology

Introduction

Line

Star

Tree

Ring

3.3 Configuring topology

If an IO device is assigned to an IO controller, this does not yet specify how the ports are connected to each other.

A port interconnection is not required to use RT, but it provides the following advantages:

● A set topology is assigned with the port interconnection. Based on an online-offline

comparison, it is possible to conduct a set-actual comparison with all devices that support this function.

● The "Device replacement without exchangeable medium" function can be used.

A port interconnection is an essential requirement for using IRT.

An overview of various options for setting up a PROFINET network is given below.

All the communication devices are connected in a linear bus topology.

In PROFINET, the linear bus topology is implemented with switches that are already integrated into the PROFINET devices. Therefore, the linear bus topology at PROFINET is merely a special form of tree / star topology.

If a link element (switch, for example) fails, communication across the failed link element is no longer possible. The network is then divided into 2 subsegments.

Linear bus topology structures require the least cabling.

If you connect communication devices to a switch with more than two PROFINET ports, you automatically create a star network topology.

If an individual PROFINET device fails, this does not automatically lead to failure of the entire network, in contrast to other structures. It is only if a switch fails that part of the communication network will fail as well

If you interconnect several star structures, you obtain a tree network topology.

In order to increase the availability of a network, use ring structures. In principle, a linear bus topology is connected to a ring through a so-called redundancy manager.

The task of the redundancy manager is managed by an external switch SCALANCE X, a CPU that supports the Media Redundancy Protocol MRP (e.g., CPU 1516-3 PN/DP) or a CP (e.g., CP 343-1 Lean).

If there is a break in the network, the redundancy manager ensures that the data is redirected over an alternative network connection in the ring.

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Example for topology

Number

Meaning

①

S7-1500 as IO controller

②

S7-300 as IO controller

③

Industrial WLAN with SCALANCE W

④

SCALANCE X 307-3 with seven electrical and three optical ports

⑤

ET 200SP with integrated 2-port switch

⑥

SCALANCE X 204 with four electrical ports

⑦

PROFINET/Industrial Ethernet

⑧

IE/PB-Link PN IO

⑨

PROFIBUS DP

⑩

ET 200S with two optical ports

3.3 Configuring topology

The following example shows a combination of different topologies.

Star topology

Linear bus topology

The combination of topology forms results in a tree topology.

Figure 3-10 Combined topology

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Additional information

3.3.1

Topology view in STEP 7

Introduction

3.3 Configuring topology

Observe the PROFINET Installation Guideline

http://www.profibus.com/nc/download/installation-guide/downloads/profinet-installation-

(

guide/display/) of the PROFIBUS User Organization when planning your PROFINET

topology.

For more detailed information, see the SIMATIC NET Twisted Pair and Fiber Optic Networks

) manual.

(http://support.automation.siemens.com/WW/view/en/8763736

You can find basic information in the Communication with SIMATIC (http://support.automation.siemens.com/WW/view/en/1254686

The topology view is one of three working areas of the hardware and network editor. You undertake the following tasks here:

● Displaying the Ethernet topology

● Configuring the Ethernet topology

● Identify and minimize differences between the set and actual topology (online)

The topology view in STEP 7 consists of a graphic area and a table area.

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Graphic area

①

Selector: Device view/Network view/Topology view

②

Toolbar

③

Graphic area of the topology view

④

Overview navigation

⑤

Selector for the table area of the topology view

Overview navigation

3.3 Configuring topology

The graphic area of the topology view displays PROFINET devices with their appropriate ports and port connections. Here you can add more PROFINET devices.

The following figure shows the graphic area of the topology view.

Figure 3-11 Graphic area of the topology view

Click in the overview navigation to obtain an overview of the created objects in the graphic area. By holding down the mouse button, you can quickly navigate to the desired objects and display them in the graphic area.

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Table area

①

Selector for the graphic area of the topology view

②

Selector: Device view/Network view/Topology view

③

Selector: Topology overview/Topology comparison

④

Table area of the topology view

3.3 Configuring topology

● Topology overview: This displays the Ethernet or PROFINET devices with their

appropriate ports and port connections in a table. This table corresponds to the network overview table in the network view.

● Topology comparison: Here you can import devices and port interconnections

automatically through offline/online comparison or extended Offline/Online comparison into STEP 7.

Figure 3-12 Table area of the topology view

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3.3.2

Interconnecting ports in the topology view

Requirement

Procedure

Result

3.3 Configuring topology

You are in the graphic view of the topology view.

To interconnect ports in the topology view, follow these steps:

1. Place the pointer of the mouse on the port you want to interconnect.

2. Press and hold down the left mouse button.

3. Move the pointer.

The pointer now uses the networking symbol to indicate "Interconnecting" mode. At the same time, you see the lock symbol on the pointer. The lock symbol disappears only when the pointer is over a valid target position.

4. Now drag the pointer to the target port. You can keep the left mouse button pressed or release it when performing this action.

5. Now release the left mouse button or press it again (depending on your previous action).

Figure 3-13 Interconnecting ports in the topology view

You have created a port interconnection.

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3.3.3

Interconnecting ports - Inspector window

Interconnecting ports in the Inspector window

3.3 Configuring topology

To interconnect ports, follow these steps:

1. In the device or network view, select the PROFINET device or PROFINET interface.

2. In the Inspector window, navigate to the port property "Port interconnection".

When the PROFINET interface is selected, you can find this setting in the Inspector window as follows: "Properties > General > Advanced Options > Port [...] > Port Interconnection."

3. In the "Local port" section, you can find the settings at the local port. In the case of fiber-

optic cable you can, for example, set the cable names here.

In the "Partner port" area, select the drop-down list for "Partner port" in order to display the available partner ports and make a selection.

Figure 3-14 Interconnecting ports in the Inspector window in STEP 7

If the PROFINET interface was disconnected, it is automatically connected by this action. In the properties of the subnet you can set whether this subnet should or should not be used for the networking.

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3.3.4

Automatic assignment of devices by offline/online comparison

Overview

Start of availability detection

Note

The availability detection can take several seconds. During this time, no user input is possible.

Automatic assignment of a PNIO device

No automatic assignment

3.3 Configuring topology

During the offline/online comparison, the configured topology is compared with the actual existing topology. Devices identified online are automatically assigned to configured devices as far as this is possible.

You start the availability detection the first time by clicking the "Compare offline/online" button in the toolbar of the "Topology comparison" tab.

You restart availability detection by clicking the "Update" button.

A PNIO device identified online is automatically assigned to a configured device if the following properties of the two devices match up:

● Article no.

● Type

● PROFINET device name

In the following situations, no automatic assignment is possible:

● No device can be identified online to match a configured device. (This means that the corresponding columns in the "Online topology" area of the topology comparison table are empty.)

In this case, you should add the already configured device to your system or delete the configured device from the configuration.

● A device identified online can be assigned to a configured device, but there are differences in the port interconnections.

In this case, you can Apply the port interconnections identified online manually to the project (Page 67).

● A device identified online cannot be assigned to a configured device. (In this case, the corresponding columns in the "Offline topology" area of the topology comparison table are empty.)

In this case, you can Include the devices identified online manually in the project (Page 68).

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3.3.5

Apply the port interconnections identified online manually to the project

Requirements

Procedure

Result

Note

If other port interconnections are recognized for a device identified online and these differ from those that exist in the project, adopting these in the project means that the port interconnections that were previously in the project are replaced by those identified online. If no port interconnections are detected for a device identified online, adopting in the project means that all the port interconnections of this device are delet

3.3 Configuring topology

You have run an offline/online comparison in the topology view. The result of this is that at least one device identified online was automatically assigned to a configured device, but that there are differences relating to the interconnection.

To adopt one more port interconnections identified online in the project manually, follow these steps:

1. Select the row belonging to the port interconnection.

2. If applicable, select further roles using multi-selection.

3. Select "Apply" > "Use selected" in the shortcut menu.

The content of the corresponding table cells in the "Action" column changes to "Apply".

4. If you have mistakenly prepared too many port interconnections to be included in the

project:

Select the rows belonging to the port interconnections you have mistakenly prepared for inclusion in the project using multi-selection.

Select "Reset" > "Reset selected" in the shortcut menu.

The content of the corresponding table cells in the "Action" column change to "No action".

5. Click the "Synchronize" button.

The port interconnections identified online for the corresponding devices are included in the project. Successful adoption is indicated by the diagnostics icon "Identical topology information" for each port.

ed in the project.

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3.3.6

Include the devices identified online manually in the project

Requirements

Procedure

Result

3.3.7

Automatic assignment of devices by advanced offline/online comparison

Overview

Automatic assignment of devices detected by ICMP

3.3 Configuring topology

You have run an offline/online comparison in the topology view. The result of this is that at least one device identified online could not be assigned to any configured device.

To adopt one more devices identified online in the project manually, follow these steps:

1. For a configured device without an online partner, move the mouse pointer to the "Device/port" column of the online topology.

2. Select the device you want to assign to the configured device from the drop-down list of this box.

3. Repeat the previous steps if necessary for other configured devices without an online partner.

The selected device that was identified online is moved up from the end of the table. Following this, it is in the row of the configured device to which you have just assigned it.

With the advanced offline/online comparison, ICMP is also used alongside DCP to be able to detect devices that do not support DCP.

With devices detected by ICMP, no type is available.

With passive devices, no article number is available. For this reason, passive devices can only be assigned automatically if you have not assigned an article number in the configured data and the offline and online IP addresses match.

With switches, automatic assignment is possible if the offline and online article number, IP address and PROFINET device name match.

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4.1

Diagnostics mechanisms of PROFINET IO

Totally Integrated Diagnostics Concept

All SIMATIC products have integrated diagnostics functions that they can use to detect and remedy faults. The components automatically flag a potential fault in the operation and provide detailed information.

Each individual error or several errors occurring concurrently are transferred from the IO device to the IO controller. If you require the full status of the IO device including any pending errors, you can also read the status directly from the IO device.

The following sections provide basic information on using diagnostics via PROFINET IO. You can find a detailed description of the system diagnostics for S7-1500, ET 200MP, ET 200SP and ET 200AL in the Diagnostics (http://support.automation.siemens.com/WW/view/en/59192926

) function manual.

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Accessing the status of an IO device with a PG/PC or an HMI device

Number

Description

①

The IO device detects an error and sends diagnostics data to the IO controller.

②

is updated.

③

7, you can read the station status for "Accessible devices" directly from the IO device

regardless of the IO controller. This is only possible if the programming device is connected to

for servicing even if the IO controller is not operational.

4.1 Diagnostics mechanisms of PROFINET IO

If you are connected to the Industrial Ethernet via a PG/PC with STEP 7 or an HMI device, you can also call up diagnostics information online. This is illustrated by the following graphic.

The IO controller notifies the programming/HMI device. The display of the system diagnostics

In STEP

Industrial Ethernet. This means that you can access diagnostics information during the commissioning phase or

Figure 4-1 PROFINET IO diagnostics with PG/PC or HMI device

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4.1.1

Diagnostics levels in PROFINET IO

Concept

Diagnostics levels

4.1 Diagnostics mechanisms of PROFINET IO

The IO device sends all error messages that occur to the IO controller. The scope and volume of diagnostics information varies according to the level of diagnostics data evaluation and the PROFINET devices you are using.

You can evaluate diagnostics data at different levels. The number and type of channels is selected, for example, at the diagnostics level 4.

The following figure shows the diagnostics levels with PROFINET IO.

Figure 4-2 Diagnostics levels with PROFINET IO

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Representation of diagnostics levels in the device view in STEP 7

Number

Description

①

Level 1:

Error(s) in the device

②

Level 2:

Error(s) in the module

Which PROFINET nodes support the extended PROFINET diagnostics?

4.1 Diagnostics mechanisms of PROFINET IO

The following figure shows the representation of the PROFINET device model in the device view of STEP 7, based on the example of a distributed I/O system ET 200MP:

Figure 4-3 Diagnostics levels in the device view of STEP 7

An overview of the PROFINET nodes that support extended PROFINET diagnostics and of what you have to configure is provided in this FAQ (https://support.industry.siemens.com/cs/ww/en/view/23678970

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4.1.2

I&M data (identification and maintenance)

Definition and properties

Further information

4.1.3

Loading I&M data to PROFINET IO devices and your modules

Which I&M data can be loaded to PROFINET IO devices and your modules?

Requirements

4.1 Diagnostics mechanisms of PROFINET IO

Identification and maintenance data (I&M) is information saved to module memory in order to provide support when:

● Checking the plant configuration

● Locating hardware changes in a plant

Identification data (I data) is module information (some of which may be printed on the module housing) such as the order and serial number. I data is read-only vendor-specific module data.

Maintenance data (M data) is plant-specific information such as the location identifier and installation date. M data is created during configuration.

The modules can be uniquely identified in online mode by means of the I&M data.

To find out whether and to what extent a PROFINET device supports I&M data, refer to the documentation of the relevant device.

You can load I&M 1 data (plant designation and location identifier) and/or I&M 2 data (installation date) and/or I&M 3 data (additional information) to the actual hardware.

● In the project settings (Options > Settings, Hardware configuration > Compiling and

downloading), the option "Download I&M data" must be enabled.

● There is an online connection to the PROFINET IO devices and the modules to which you

want to load I&M data.

● You have entered the I&M data you want to download in the properties of the respective

PROFINET IO devices and your modules (Inspector window: "Properties" tab > "General" tab, Settings > Identification & Maintenance).

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Where do I specify which I&M data is downloaded to which PROFINET IO devices?

Note Language dependency of the I&M data to be loaded

The I&M data are loaded to the real hardware in the form that you specified in the properties of the relevant PROFINET IO devices and your modules. There is no language dependency.

4.1 Diagnostics mechanisms of PROFINET IO

You specify which I&M data you want to download to which PROFINET IO devices in the "Load preview" dialog. You will find the following alternatives in the drop-down list of the "Identification and maintenance data (I&M)" row:

● Load nothing

The check boxes for all PROFINET IO devices as well as the check boxes for the loadable I&M data are cleared.

No I&M data is transferred to the actual hardware during loading with this setting.

● Load data

The check boxes for all PROFINET IO devices as well as the check boxes for the loadable I&M data are selected.

The respective I&M 1, I&M 2 and I&M 3 data is transferred to all PROFINET IO devices during loading with this setting.

● Load selected

You select the check boxes of those PROFINET IO devices to which you want to load I&M data. You also select the check boxes of the identification data you want to load.

With this setting, you transfer the selected I&M data to the selected PROFINET IO devices during loading.

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4.2

Diagnostics using status LEDs

LEDs for diagnostics on PROFINET

Meaning

LED image

S7-1500

ET 200MP

ET 200SP

ET 200AL

LINK/TX/RX LED

LK LED

P1 Link

LED

P2 Link

LED

example, IO controller).

LED flashes green

LED yellow

Additional information

4.2 Diagnostics using status LEDs

Each port of a PROFINET interface of a SIMATIC device has one LED.

The following table shows a summary of the meaning of these LEDs in the S7-1500, ET 200MP, ET 200SP and ET 200AL systems.

Table 4- 1 S7-1500, ET 200MP, ET 200SP, ET 200AL: LEDs for diagnostics on PROFINET

There is no connection between the PROFINET interface of your PROFINET device and a communication partner (for example, IO controller).

There is a connection between the PROFINET interface of your PROFINET device and a communication partner (for

The "Node flash test" is performed.

There is active data traffic (sending/receiving) via the Ethernet connection.

You can find a detailed description of all LEDs of the module with cause of the error and remedies in the relevant documentation for the module.

LED off

LED green

X X X X

X X - -

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4.3

Diagnostics via the display of the S7-1500 CPUs

Display of the S7-1500 CPUs

Diagnostics via the display

4.3 Diagnostics via the display of the S7-1500 CPUs

Each CPU in the S7-1500 automation system has a front cover with a display. Control and status information is shown in various menus on the display. You use the operating keys to navigate through the menus.

The following indicators can be evaluated for diagnostics purposes on the display:

● Error and alarm texts (system diagnostics, alarm messages)

● Module status for central and distributed modules

In the following example of a display of the CPU 1516-3 PN/DP, you can see a warning on the diagnostics icon and an exclamation mark on the icon for module.

Figure 4-4 Display of overview

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Module status

4.3 Diagnostics via the display of the S7-1500 CPUs

To show the module status, navigate on the display through the menu items "Module" > "PROFINET I/O (X1)" > "Station" > "Slot" > "Status" > "Module status".

The module status indicates that a fault has occurred in the module. The "lower-level status" is the status of the module in the diagnostics level below this. In the example, the status is "good", i.e., the fault is not in the lower diagnostics level submodule or channel, but instead in the module.

Figure 4-5 Display of module status

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Error and alarm texts

4.3 Diagnostics via the display of the S7-1500 CPUs

You can show diagnostics buffer entries and alarm messages for the relevant automation system on the display.

To show the diagnostics buffer entries of the CPU, navigate on the display via the menu items "Diagnostics" > "Diagnostics buffer".

Figure 4-6 Display of diagnostics buffer

To show the alarm messages of the automation system, navigate through the menu items "Diagnostics" > "Alarms" > "Alarm text" on the display.

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Note Updating the alarm display The display shows the currently read status of the CPU in static form, the display is not

automatically updated. The alarm display is updated after it has been exited and opened again.

You set the automatic updating of the diagnostics information under: " "DiagnosticRefresh".

Additional information

4.3 Diagnostics via the display of the S7-1500 CPUs

Display" >

Figure 4-7 Display of alarms

Figure 4-8 Display of alarm message

You can find the description of the operation and functions of the display in the SIMATIC S7-1500 Display Simulator (

as/interactive-manuals/getting-started_simatic-s7-1500/disp_tool/start_de.html).

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4.4

Diagnostics via Web server

Set topology and actual topology - graphic view

4.4 Diagnostics via Web server

The CPUs belonging to the S7 family have their own integrated Web server with a wide range of functions.

For diagnostics, the Web server supports you with the following displays:

● Contents of the diagnostic buffer

● Module status

● Actual topology of the PROFINET system

● Set topology of the PROFINET system (from the configuration)

Requirements for displaying the set and actual topology:

● You have configured the PROFINET ports in the topology editor of the hardware and network editor of STEP 7.

● You have loaded the entire project with STEP 7 in the CPU.

The following shows an example of the graphic view.

Figure 4-9 Topology - graphic view via the Web server

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Connection

Meaning

Set topology

Actual topology

connection (e.g., port interchanged).

① Configured and accessible PROFINET devices

① Configured but not accessible PROFINET devices

③ Disabled devices

④ Interchanged ports

4.4 Diagnostics via Web server

Meaning of the colored connections in the set/actual topology:

Table 4- 2 Meaning of the colored connections in the set/actual topology:

green The current actual connection matches the configured set connec-

tion.

red The current actual connection does not match the configured set

yellow The connection cannot be diagnosed. Causes:

• The communication to an IO device has been disrupted (e.g., cable removed)

• Connection to a passive component

• Connection to PROFINET devices of another IO controller or

PROFINET system

Configured and accessible PROFINET devices are displayed dark-gray. Connections show the ports through which the PROFINET devices of a station are connected.

The configured but not accessible PROFINET devices are displayed in pink with red border (e.g., device has failed, cable disconnected).

detected connections

All disabled, configured PROFINET devices are displayed light-gray.

Interchanged ports are marked red in the set topology view. The currently connected ports are displayed in the actual topology, the configured set connection in the set topology.

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⑤ PROFINET devices of another PROFINET IO system

⑥ Representation of faulty neighbor relations

Additional information

4.4 Diagnostics via Web server

● In the set topology:

A PROFINET device of another PROFINET IO system is displayed with a green connection (or red connected if the ports have been interchanged), when it is directly adjoining a configured and accessible PROFINET device When the PROFINET device of another PROFINET IO system is not accessible, a yellow connection line is displayed.

The connection between two PROFINET devices that both belong to a different PROFINET IO system, cannot be determined and is always displayed in yellow.

● In the actual topology:

A PROFINET device of another PROFINET IO system is only displayed if the PROFINET device is in direct proximity to a configured PROFINET device. The PROFINET device is displayed light-gray and with dashed line.

For PROFINET devices of a different PROFINET IO system, no status display is shown on the device head.

① and it is also accessible.

The devices whose neighbor relations cannot be read out completely or correctly are displayed light-gray with red border.

The tabular view of the actual topology and the status overview of the PROFINET devices in the project are possible.

You can find these views, additional topology examples, and detailed information on the operation and the functions of the Web server in the Web server (http://support.automation.siemens.com/WW/view/en/59193560

) manual.

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4.5

Diagnostics in STEP 7

Online & diagnostics network view

4.5 Diagnostics in STEP 7

For PROFINET, you have the following options to evaluate diagnostics in STEP 7:

● Online & diagnostics - Devices & networks

● Online & diagnostics - diagnostics of PROFINET ports

In the hardware and network editor (launched from the "Project tree" by double-clicking "Devices & networks"), you can get an overview of the current state of your system by clicking on the "Go online" button. It also shows the configuration information (for example, non-configured modules). This option is also available in the topology view in similar form.

Schematic drawing of the network view (online):

Figure 4-10 Online & diagnostics network view

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Online & diagnostics device view

4.5 Diagnostics in STEP 7

In STEP 7, you can display an overview of the modules in which faults have occurred. To do this, select the menu command "Online > Online & diagnostics". Once you are connected, you can see the status of the accessible devices in the project tree.

Double-click the device which displays an alarm message to access the faulty module directly. The device view is opened in the work area. In the device view of the device that reports the fault you can see directly in which module the fault occurs.

Open the "Diagnostics" tab and the subordinate "Device information" tab in the Inspector window for a more detailed error description.

Schematic drawing of the device view (online):

Figure 4-11 Online & diagnostics device view

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Diagnostics of PROFINET ports

Additional information

4.5 Diagnostics in STEP 7

If you select "PROFINET interface > Ports" in the Diagnostics area in the online & diagnostics device view of a PROFINET device, the ports of the PROFINET interface are listed in a table.

The table provides you with the following information about the ports of the PROFINET interface.

● Name

● Status

● Settings

● Operating mode

Figure 4-12 Diagnostics of PROFINET ports in STEP 7

You can find information on the system diagnostics for S7-1500, ET 200MP, ET 200SP and ET 200AL in the Diagnostics (http://support.automation.siemens.com/WW/view/en/59192926 help for STEP 7.

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4.6

Extended maintenance concept

Diagnostic status

Symbol

Severity of the error

demanded

4.6 Extended maintenance concept

The PROFINET interfaces with integrated switch of the SIMATIC devices support the fourlevel diagnostics concept in accordance with PROFINET specification Version V2.3 or higher with the following status:

Table 4- 3 Classification of the diagnostic status

Good

Maintenance required Maintenance

Bad

Green checkmark

Green wrench

Yellow wrench

Red wrench

The aim of the diagnostics concept is the early detection and elimination of potential faults before they cause a production outage.

Other status information is defined in addition to the Good (no fault) and Bad (fault) status information for a PROFINET device.

The maintenance information is generated with the following system alarms:

● Maintenance required (symbolized by a green wrench) and

● Maintenance demanded (symbolized by a yellow wrench)

The times at which the two system alarms are generated can be customized for most wear parameters.

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Example: Maintenance demanded for a PROFINET cable

Number

Description

①

The system reserve of the fiber-optic cable drops below 0 dB.

②

controller.

③

Based on the interrupts, the IO controller detects the maintenance demanded from the switch

STEP 7 for the relevant IO controller.

④

cated on the IO device and at the switch by a yellow wrench symbol.

⑤

STEP 7 can also read out detailed information directly from the switch.

4.6 Extended maintenance concept

The following graphic illustrates how diagnostics information is exchanged when the transmission quality on the optical cable decreases due to ageing, for example. In this example, the scenario is considered after a maintenance required has already been diagnosed.

Both the ET 200S PN FO and the switch send the maintenance demanded alarm to the IO

and from the IO device. The module information data is updated in the IO controller and the corresponding error OBs are called. Note: To be able to start the error OBs in the IO controller, the "Call the user program if communication errors occur" property must be selected in

In STEP 7 (on the programming device/PC), the maintenance demanded message is indi-

Figure 4-13 Maintenance demanded for a PROFINET cable

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4.7

Diagnostics of the network topology

Availability

Network diagnostics

MIB

Detecting the network topology

Use of SNMP (Simple Network Management Protocol)

Use of SNMP in the SIMATIC NET environment

4.7 Diagnostics of the network topology

As an open standard, you can use any SNMP based systems or software solutions for diagnostics in PROFINET.

The network management protocol SNMP (Simple Network Management Protocol) uses the wireless UDP transport protocol. It consists of two network components, similar to the client/server model. The SNMP manager monitors the network nodes and the SNMP clients collect the various network-specific information in the individual network nodes and store it in a structured form in the network management system to run detailed network diagnostics.

(Management Information Base). This information allows a

The MIB (Management Information Base) is the database of a device. SNMP clients access this database in the device. The S7 device family supports the following standard MIBs:

● MIB II, standardized in the RFC 1213

● LLDP-MIB, standardized in the international standard IEC 802.1AB

● LLDP-PNIO-MIB, standardized in the international standard IEC 61158-6-10

LLDP (Link Layer Discovery Protocol) is a protocol that is used to detect the closest neighbor. LLDP enables a device to send information about itself and to receive information from its neighbor devices. This information is then saved in the LLDP MIB, for example, and can be queried using SNMP. This information allows a network management system to determine the network topology.

SNMP can be used as follows:

● By users to integrate network diagnostics into a central HMI/SCADA system using the SIMATIC NET OPC server

● By the IT administration of machine and plant operators to monitor their Industrial Ethernet network using standard network management systems.

● By the IT administration, to monitor the automation network, alongside the office network, using standard network management systems.

SNMP-compliant devices from the SIMATIC NET family can be monitored and operated via a conventional standard Internet browser. The management system known as web-based management offers a wide range of device-specific information (network statistics, status of redundant supply, for example).

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4.8

Diagnostics in the user program

4.8.1

Diagnostics and configuration data records

Diagnostics mechanism

Diagnostics data records in PROFINET IO

Addressing levels of diagnostics data records

4.8 Diagnostics in the user program

The IO device outputs a diagnostics interrupt to the IO controller when it detects faults such as wire break on an IO module. This interrupt calls a corresponding organization block in the user program (diagnostics interrupt OB82), in order to generate a defined (programmed) response to the fault and passes a diagnostics data record.

There are two different types of diagnostics data record:

1. Channel diagnostics data records

Channel diagnostics data records are generated if a channel is in an error state and / or has triggered an interrupt.

A diagnostics data record of length 0 is returned if there is no fault.

2. Vendor-specific diagnostics data records

The structure and size of vendor-specific diagnostics data records depend on the vendor's settings.

For information about vendor-specific diagnostics data records, refer to the appropriate device manual.

Diagnostics and configuration data is evaluated at the following addressing levels:

● Device level

● AR (Application Relation)

● API (Application Process Identifier)

● Slot

● Subslot

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Note

The diagnostics information is only generated for configured modules / submodules / channels.

4.8 Diagnostics in the user program

A group of diagnostics and configuration data records are available for each address level (exception: device level always 0xF80c). In HEX representation, the individual groups of data records are distinguished by the first letter of the data record number.

Figure 4-14 Addressing levels of diagnostics data records

The information for each IO device (addressing level AR), module (addressing level slot) or submodule (addressing level subslot) is always transferred in separate diagnostics or configuration data records. The data record returns diagnostics data or configuration data for one or more subslots, slots and APIs, depending on the addressing level.

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4.8.2

Evaluate diagnostics in the user program

Diagnostics in the user program

1. Evaluating the diagnostics status

Number

Description

①

All individual errors are collected in a single data record on the interface module.

②

ly directly from the IO device.

4.8 Diagnostics in the user program

For PROFINET IO, a cross-vendor structure of data records with diagnostics information applies. Diagnostics information is created only for channels on which a fault has occurred. With PROFINET, there are two basic ways to obtain diagnostics information.

Read out the diagnostics of your PROFINET IO system using the instructions "DeviceStates" and "ModuleStates", to localize those stations / modules or station / modules with maintenance demanded or maintenance required that have faults within a PROFINET IO system.

The instruction RDREC (read data record) is then used to read various diagnostics data records directly from the module concerned and thus obtain detailed information about the error.

In your user program, the instruction "RDREC" reads the entire station status asynchronous-

Figure 4-15 Example: Evaluating diagnostics data records with the instruction "RDREC"

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2. Evaluation of interrupts

Number

Description

①

form of an interrupt.

②

(OB 82) is started.

③

chronously from the IO controller without addressing the IO device.

Instructions and OBs

4.8 Diagnostics in the user program

When the error OB (OB 82) is called, the OB's start information provides you with information on the cause and location of the error. Detailed information on the error event can be obtained in the error OB using the instruction "RALRM" (read additional interrupt information).

Every error is sent to the IO controller individually as channel diagnostics information in the

In the IO controller, the module status data is updated automatically and the error OB

In your user program in the error OB (OB 82), the instruction "RALRM" reads the error syn-

Figure 4-16 Diagnostics with OB 82 and the instruction "RALRM"

You will find information on the instructions and OBs in the STEP 7 online help.

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Introduction

The following section describes the PROFINET IO functions for field of application, properties and configuration in STEP 7.

Refer to the documentation for the respective device to see to what extent the PROFINET devices support the described functions.

You can find a tabular overview of the PROFINET devices and the functions these support on the Internet (https://support.industry.siemens.com/cs/ww/en/view/102325771

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Functions

5.1

Connecting other bus systems

5.1.1

Connecting other bus systems

Fieldbus integration

Gateways of an S7-1500 CPU

5.1 Connecting other bus systems

PROFINET allows you to use a proxy-capable PROFINET device to integrate existing fieldbus systems (for example, PROFIBUS, AS interface). The devices of these fieldbus systems are mapped on proxy PROFINET devices. In this way, you can set up any hybrid systems consisting of fieldbus and Ethernet-based subsystems. This allows a continuous exchange of information.

Figure 5-1 Gateways on PROFINET IO

An overview of the gateways at an S7-1500 CPU is provided in this FAQ (https://support.industry.siemens.com/cs/ww/en/view/88778900

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5.1.2

Linking PROFINET and PROFIBUS

PROFINET device with proxy functionality

5.1 Connecting other bus systems

With a proxy-capable PROFINET device which is equipped with a PROFINET interface in addition to a PROFIBUS interface (for example, IE/PB Link PN IO), you can integrate existing PROFIBUS configurations into the PROFINET configuration.

The following figures shows how a PROFIBUS system is connected via IE/PB Link to a CPU S7-1500 (as of firmware version 1.7).

Figure 5-2 Gateway from PROFINET and PROFIBUS via IE/PB link

The PROFINET device with proxy functionality is the substitute for a PROFIBUS device on Ethernet. The proxy functionality allows a PROFIBUS device to communicate not only with its master but also with all devices on PROFINET.

With PROFINET you can connect an existing PROFIBUS system to an IO controller, for example with the help of an IE/PB Link PN IO.

From the IO controller perspective, the PROFIBUS DP slaves are connected to the same network as the IE/PB Link PN IO. These slaves have the same device name and IP address as the IE/PB Link PN IO, but different device numbers. Furthermore, each also has a specific PROFIBUS address.

In this way, you can link both DPV0 and DPV1 slaves to PROFINET.

For information on how to connect a DP slave to a PROFINET IO system, refer to section Connect the DP slave via the IE/PB Link to a PROFINET IO system (Page 96).

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Diagnostic options with a CPU S7-1500 as IO controller

5.1.3

Connect the DP slave via the IE/PB Link to a PROFINET IO system

Requirements

Procedure for connecting a DP slave via an IE/PB Link

5.1 Connecting other bus systems

The CPU S7-1500 (as of firmware version 1.7) as IO controller detects disrupted DP slaves behind the IP/PB link.

● STEP 7 as of V12

● S7-1500 CPU as of firmware version 1.7

● ET 200SP CPU as of firmware version 1.7

● CPU 1516pro-2 PN as of firmware version 2.0

● S7-1500 Software Controller as of firmware version 1.7

● S7-300/400 CPU

To connect a DP slave to a PROFINET IO system via an IE/PB Link in STEP 7, follow these steps:

1. Drag-and-drop a PROFINET CPU, for example CPU 1513-1 PN, from the hardware catalog into the network view of STEP 7.

2. Drag-and-drop an IE/PB Link PN IO from the hardware catalog into the network view of STEP 7. The IE/PB Link PN IO is located under Network components > Gateways > IE/PB Link PN IO.

3. Assign the IE/PB Link PN IO to the CPU.

4. Drag a PROFIBUS interface module e.g. IM155-6 DP HF, from the hardware catalog to the network view.

5. Assign the interface module to the IE/PB Link.

Figure 5-3 Configuring an IE/PB link

6. Select the IE/PB Link PN IO in the network view of STEP 7.

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Result

Reference

5.1 Connecting other bus systems

7. In the Inspector window, go to the "Gateway" area and select the "Network gateway as

PROFINET IO proxy" option.

Figure 5-4 Setting a gateway

8. In the PROFINET device number area, you can assign a PROFINET device number for

the DP slave. If you have selected the "Device number = PB address" check box (default), STEP 7 automatically assigns the device number according to the PROFIBUS address of the slave. In addition, you no longer need to update the device number if the PROFIBUS address changes.

Figure 5-5 Assigning PN device numbers for IE/PB link

You have connected the DP slave to the PROFINET IO system.

Additional information on the IE/PB link is available in the manual Gateway IE/PB Link PN IO (http://support.automation.siemens.com/WW/view/en/19299692

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5.2

Intelligent IO devices (I-devices)

5.2.1

I-device functionality

"I-device" naming conventions

Application example: Configuration and application of the PROFINET I-device function

5.2 Intelligent IO devices (I-devices)

The "I-device" (intelligent IO device) functionality of a CPU facilitates data exchange with an IO controller and operation of the CPU as intelligent preprocessing unit of sub processes, for example. The I-device is linked as an IO device to a "higher-level" IO controller.

The preprocessing is handled by the user program in the I-device. The process values acquired in the centralized or distributed (PROFINET IO or PROFIBUS DP) I/O are preprocessed by the user program and made available to the IO controller.

Figure 5-6 I-device

In the remainder of this description, a CPU or a CP with I-device functionality is simply called an "I-device".

A detailed application example is available here (https://support.industry.siemens.com/cs/ww/en/view/109478798

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5.2.2

Properties and Advantages of the I-Device

Fields of application

Properties

Advantages

5.2 Intelligent IO devices (I-devices)

Fields of application of the I-device:

● Distributed processing

A complex automation task can be divided into smaller units/subprocesses. This results in manageable processes which lead to simplified subtasks.

● Separating subprocesses

Complicated, widely distributed and extensive processes can be subdivided into several subprocesses with manageable interfaces by using I-devices. These subprocesses can be stored in individual STEP 7 projects if necessary, which can later be merged to form one master project.

● Know-how protection

Components can only be delivered with a GSD file for the I-device interface description instead of with a STEP 7 project. The know-how of the user program may no longer be published.

Properties of the I-device:

● Unlinking STEP 7 projects

Creators and users of an I-device can have completely separated STEP 7 automation projects. The GSD file forms the interface between the STEP 7 projects. This allows a link to standard IO controllers via a standardized interface.

● Real-time communication

The I-device is provided with a deterministic PROFINET IO system via a PROFINET IO interface and therefore supports RT (real-time communication) and IRT (isochronous real time).

The I-device has the following advantages:

● Simple linking of IO controllers

● Real-time communication between IO controllers

● Relieving the IO controller by distributing the computing capacity to I-devices.

● Lower communication load by processing process data locally.

● Manageable, due to processing of subtasks in separate STEP 7 projects

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5.2.3

Characteristics of an I-Device

Principle

I-device without lower-level PROFINET IO system

5.2 Intelligent IO devices (I-devices)

An I-device is included in an IO system like a standard IO device.

The I-device does not have its own distributed I/O. The configuration and parameter assignment of the I-devices in the role of an IO device is the same as for a distributed I/O system (for example ET 200).

Figure 5-7 I-device without lower-level PROFINET IO system

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Siemens SIMATIC PROFINET Function Manual

Legal information

Preface

Table of contents

Introduction to PROFINET

PROFINET terms

Basic terminology of communication

PROFINET interface

Implementation of the PROFINET device model in SIMATIC

2.2 Setting up PROFINET

Active Network Components

Cabling technology

Wireless design

Basics

Tips on assembly

Network security

Basics

Network components and software

Application example

3.1 Assigning an IO device to an IO controller

3.2 Device name and IP address

Device name

IP address

Assigning a device name and IP address

Assign device name via communication table

Permitting changes to the device name and IP address directly on the device

3.3 Configuring topology

Topology view in STEP 7

Interconnecting ports in the topology view

Interconnecting ports - Inspector window

Automatic assignment of devices by offline/online comparison

Apply the port interconnections identified online manually to the project

Include the devices identified online manually in the project

Automatic assignment of devices by advanced offline/online comparison

Diagnostics mechanisms of PROFINET IO

Diagnostics levels in PROFINET IO

I&M data (identification and maintenance)

Loading I&M data to PROFINET IO devices and your modules

4.2 Diagnostics using status LEDs

4.3 Diagnostics via the display of the S7-1500 CPUs

4.4 Diagnostics via Web server

4.5 Diagnostics in STEP 7

4.6 Extended maintenance concept

4.7 Diagnostics of the network topology

Diagnostics and configuration data records

4.8 Diagnostics in the user program

Evaluate diagnostics in the user program

Connecting other bus systems

5.1 Connecting other bus systems

Linking PROFINET and PROFIBUS

Connect the DP slave via the IE/PB Link to a PROFINET IO system

I-device functionality

5.2 Intelligent IO devices (I-devices)

Properties and Advantages of the I-Device

Characteristics of an I-Device