Siemens SIMATIC IO-Link system Parts list manual

Guide 1
System overview 2
Integration into the
automation system 3
SIMATIC
IO-Link system
Function Manual
07/2022
A5E31637677-AC

Siemens AG
Digital Industries
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A5E31637677-AC
Ⓟ 07/2022 Subject to change
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tions.

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Function Manual, 07/2022, A5E31637677-AC 3
Preface
Purpose of the documentation
This function manual provides a general overview of the IO-Link communication system.
It shows the interaction of the various components of an IO-Link system and will help you
improve your general understanding of IO-Link.
Basic knowledge required
The following knowledge is required in order to understand the documentation:
•General knowledge of automation technology
•Knowledge of the industrial automation system SIMATIC
•Proficiency with STEP7
Scope of the documentation
This documentation is the basic documentation for IO-Link systems at Siemens. The product
documentation is based on this documentation.
Conventions
In this documentation, "STEP 7" is used as a synonym for all versions of the configuration and
programming software "STEP7 (TIA Portal)".
Please also observe notes marked as follows:
NOTE
A note contains important information on the product described in the documentation, on
the handling of the product or on the section of the documentation to which particular atten
tion should be paid.
Additional support
•Information about Technical Support is available in section Siemens Industry Online
Support (Page 4).
•The range of technical documentation for the individual SIMATIC products and systems
can be found on the Internet.
•Information about the online catalog and online order system is available in section
Industry Mall (Page 4).

IO-Link system
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4
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secure operation of plants, systems, machines and networks.
In order to protect plants, systems, machines and networks against cyber threats, it is
necessary to implement – and continuously maintain – a holistic, state-of-the-art industrial
security concept. Siemens’ products and solutions constitute one element of such a concept.
Customers are responsible for preventing unauthorized access to their plants, systems,
machines and networks. Such systems, machines and components should only be connected
to an enterprise network or the internet if and to the extent such a connection is necessary
and only when appropriate security measures (e.g. firewalls and/or network segmentation)
are in place.
For additional information on industrial security measures that may be implemented, please
visit (https://www.siemens.com/industrialsecurity).
Siemens' products and solutions undergo continuous development to make them more
secure. Siemens strongly recommends that product updates are applied as soon as they are
available and that the latest product versions are used. Use of product versions that are no
longer supported, and failure to apply the latest updates may increase customers' exposure to
cyber threats.
To stay informed about product updates, subscribe to the Siemens Industrial Security RSS
Feed visit (https://www.siemens.com/cert).
Siemens Industry Online Support
You can find current information on the following topics quickly and easily here:
•Product support
All the information and extensive know-how on your product, technical specifications,
FAQs, certificates, downloads, and manuals.
•Application examples
Tools and examples to solve your automation tasks – as well as function blocks,
performance information and videos.
•Services
Information about Industry Services, Field Services, Technical Support, spare parts and
training offers.
•Forums
For answers and solutions concerning automation technology.
•mySupport
Your personal working area in Industry Online Support for messages, support queries, and
configurable documents.
This information is provided by the Siemens Industry Online Support in the Internet
(http://www.siemens.com/automation/service&support).
Industry Mall
The Industry Mall is the catalog and order system of Siemens AG for automation and drive
solutions on the basis of Totally Integrated Automation (TIA) and Totally Integrated Power
(TIP).
Preface

You can find catalogs for all automation and drive products on the Internet
(https://mall.industry.siemens.com).
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Preface

6
1 Guide.................................................................................................................................................. 7
1.1 Guide............................................................................................................................... 7
2 System overview................................................................................................................................ 8
2.1 Advantages of IO-Link....................................................................................................... 8
2.2 Overview of IO-Link system............................................................................................... 9
2.3 IO-Link interface............................................................................................................... 10
2.4 IO-Link protocol................................................................................................................ 13
2.5 Device profiles.................................................................................................................. 15
2.6 IODD and Port Configuration Tool - S7-PCT........................................................................ 15
2.7 Differences between IO-Link specifications V1.0 and V1.1................................................. 17
3 Integration into the automation system............................................................................................ 18
3.1 Configuration of the IO-Link system.................................................................................. 18
3.1.1 Configuration with S7-PCT................................................................................................ 20
3.1.2 Configuration without S7-PCT........................................................................................... 22
3.1.3 Overview of configuration options.................................................................................... 24
3.2 Data access of the automation system and the HMI device................................................ 26
3.3 Changing and saving device parameters during plant operation........................................ 27
3.4 Replacing a master or device during operation.................................................................. 28
IO-Link system
Function Manual, 07/2022, A5E31637677-AC
Table of contents

Guide 1
1.1 Guide
Documentation
Various IO-Link products are available from Siemens. Each of these products has a separate
documentation. The IO-Link products are embedded in systems, e.g. ET200SP. The
documentation for the system consists of the respective system manual, function manuals
and manuals. In addition, the STEP7 online help and the Port Configuration Tool - S7-PCT
online help assist you in configuring and programming your automation system with IO-Link.
IO-Link components from Siemens
Siemens offers a wide range of products and support for IO-Link:
•Master
•Device, I/O modules
•Device, industrial switchgear
•Device, RFID systems (RFID = radio-frequency identification)
•Port Configuration Tool - S7-PCT
(https://support.industry.siemens.com/cs/ww/en/view/32469496)
•IO-Link library (https://support.industry.siemens.com/cs/ww/en/view/82981502) with the
blocks "LIOLink_MasterIO_LINK_MASTER" and "LIOLink_Device"
•Overview of the topic IO-Link (http://www.siemens.com/io-link)
Additional information on the products can be found on the Internet
(https://support.industry.siemens.com/cs/ww/en/view/109737170).
Additional documentation for IO-Link
You can find a free download of the latest documentation on the IO-Link products on the
Internet (https://support.industry.siemens.com/cs/CN/en/ps/15818/man).
7
IO-Link system
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8
System overview 2
Introduction
A continuous communication down to the lowest field level ensures enhanced use of the
functions and performance capability of sensors and actuators. Enhanced use of sensors and
actuators allows you to operate your machines and plants more productively.
No data other than the actual process value can be exchanged via the standard interfaces
(digital, analog) used at the sensor/actuator level. Sensors and actuators with integrated
intelligence are now used for increasingly complex functions and require a communication
interface tailored to these requirements.
Definition
IO-Link is an innovative, point-to-point communication interface for the sensor/actuator area
that is specified in IEC 61131-9.
IO-Link consists of the following system components:
•IO-Link master
•IO-Link device
•Unshielded 3-wire or 5-wire standard cable
•Engineering tool for configuring and assigning parameters of IO-Link
2.1 Advantages of IO-Link
The IO-Link system offers significant advantages as digital interface when connecting
sensors/actuators:
•Open standard in accordance with IEC 61131-9
–Devices can be integrated in the same way in all conventional fieldbus systems and
automation systems
•Tool supported parameter setting and central data management
–Fast configuration and commissioning
–Simple creation of current plant documentation even for sensors/actuators
•Single, uniform wiring and far fewer different interfaces at the sensors/actors
–Standardized, uniform interface for sensors and actuators independent of their
complexity (switching, measuring, multi-channel, binary, mixed signals, etc.)
–Reduction in the variety of types and inventory
–Fast commissioning
–Any combination of IO-Link devices and sensors/actuators without IO-Link at IO-Link
master

•Continuous communication between sensors/actuators and the CPU
–Access to all process data, diagnostic data and device information
–Access to device-specific data, such as energy data
–Remote diagnostics can be performed
•Continuous diagnostic information down to sensor/actuator level
–Reduction in troubleshooting effort
–Minimizing risk of failure
–Preventive maintenance and optimization of service and maintenance planning
•Dynamic change of sensor/actuators parameters by the controller or the operator at the
HMI
–Reduction in downtimes during product change
–Increased variability of the machine
•Automatic reassignment of parameters when devices are replaced during operation
–Minimization of downtimes
–Device replacement by untrained personnel without additional aids
–Avoidance of incorrect settings
•Integrated device identification
–Identification of the installed devices
–Ensure quality of result in production and manufacturing when replacing the device
2.2 Overview of IO-Link system
Components
An IO-Link system consists of the following components:
•IO-Link master
•IO-Link device, for example:
–Sensors/actuators
–RFID readers
–I/O modules
–Valves
•Unshielded 3-wire or 5-wire standard cables
•Engineering tool for configuring and assigning parameters of IO-Link
9
System overview
2.2 Overview of IO-Link system
IO-Link system
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Example plant with IO-Link
The figure below shows an example of plant architecture with IO-Link.
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Figure 2-1Plant architecture with IO-Link
The IO-Link master establishes the connection between the IO-Link devices and the
automation system. If the IO-Link master is a component of the I/O system, it is installed
either in the control cabinet or directly in the field as remote I/O in degree of protection
IP65/67. The IO-Link master communicates by means of various fieldbuses or product-specific
backplane buses. An IO-Link master can have multiple IO-Link ports (channels). An IO-Link
device can be connected (point-to-point communication) to each port.
Engineering
The IO-Link system is engineered parallel to the overall automation system and can be
embedded in it and intermeshed with it.
2.3 IO-Link interface
Introduction
The IO-Link is a serial, bidirectional point-to-point connection for signal transmission and
power distribution under any network, fieldbus or backplane bus.
10 IO-Link system
Function Manual, 07/2022, A5E31637677-AC
System overview
2.3 IO-Link interface