Siemens Simatic S7-1500 User manual

CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0)
SIMATIC
S7-1500
CPU 1518
-4 PN/DP MFP
(6ES7518
-4AX00-1AB0)
Equipment Manual
07/2021
A5E40882737
-AB
Preface
Documentation guide
1
Product overview
2
Connecting up
3
Interrupts, error messages,
diagnostics and system
alarms
4
Technical specifications
5
Dimensional drawing
A

Siemens AG
Digital Industries
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A5E40882737-AB
Ⓟ
07/2021 Subject to change
Copyright © Siemens AG 2017 - 2021.
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Legal information
Warning notice system
This manual contains notices you have to observe in order to ensure your personal safety, as well as to prevent
damage to property. The notices referring to your personal safety are highlighted in the manual by a safety alert
symbol, notices referring only to property damage have no safety alert symbol. These notices shown below are
graded according to the degree of danger.
DANGER
indicates that death or severe personal injury will result if proper precautions are not taken.
WARNING
indicates that death or severe personal injury may result if proper precautions are not taken.
CAUTION
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.
If more than one degree of danger is present, the warning notice representing the highest degree of danger will
be used. A notice warning of injury to persons with a safety alert symbol may also include a warning relating to
property damage.
Qualified Personnel
The product/system described in this documentation may be operated only by personnel qualified for the specific
task in accordance with the relevant documentation, in particular its warning notices and safety instructions.
Qualified personnel are those who, based on their training and experience, are capable of identifying risks and
avoiding potential hazards when working with these products/systems.
Proper use of Siemens products
Note the following:
WARNING
Siemens products may only be used for the applications described in the catalog and in the relevant technical
documentation. If products and components from other manufacturers are used, these must be recommended
or approved by Siemens. Proper transport, storage, installation, assembly, commissioning, operation and
maintenance are required to ensure that the products operate safely and without any problems. The permissible
ambient conditions must be complied with. The information in the relevant documentation must be observed.
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may be trademarks whose use by third parties for their own purposes could violate the rights of the owner.
Disclaimer of Liability
We have reviewed the contents of this publication to ensure consistency with the hardware and software
described. Since variance cannot be precluded entirely, we cannot guarantee full consistency. However, the
information in this publication is reviewed regularly and any necessary corrections are included in subsequent
editions.

CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0)
Equipment Manual, 07/2021, A5E40882737-AB 3
Preface
Purpose of the documentation
This manual supplements the system manual of the S7-1500 automation system / ET 200MP
distributed I/O system as well as the function manuals. This manual contains a description of
the module-specific information. The system-related functions are described in the system
manual. All system-spanning functions are described in the function manuals.
The information provided in this manual and the system manual enables you to commission
the CPU 1518-4 PN/DP MFP.
Basic knowledge required
To understand this documentation, you need to have general knowledge of automation
engineering. You also need basic knowledge of the following topics:
•Knowledge of the industrial automation system SIMATIC
•Knowledge of working with STEP 7
•Knowledge of working with Linux systems
•Knowledge of programming with C/C++
•Working with the Eclipse development environment
Conventions
•STEP 7: In this documentation, "STEP 7" is used as a synonym for all versions of the
configuration and programming software "STEP 7 (TIA Portal)".
•ODK: Open Development Kit
•SO: Shared Object
•MFP: Multifunctional platform
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
attention should be paid.

Preface
CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0)
4Equipment Manual, 07/2021, A5E40882737-AB
Recycling and disposal
For environmentally friendly recycling and disposal of your old equipment, contact a certified
electronic waste disposal company and dispose of the equipment according to the applicable
regulations in your country.
Security information
Siemens provides products and solutions with industrial security functions that support the
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/industrialsecurity).

Preface
CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0)
Equipment Manual, 07/2021, A5E40882737-AB 5
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
(https://support.industry.siemens.com).
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).
You can find catalogs for all automation and drive products on the Internet
(https://mall.industry.siemens.com).

CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0)
6Equipment Manual, 07/2021, A5E40882737-AB
Table of contents
Preface................................................................................................................................................... 3
1 Documentation guide............................................................................................................................ 7
2 Product overview................................................................................................................................... 9
2.1 New functions ..................................................................................................................... 9
2.2 Applications of the S7-1500 CPUs ...................................................................................... 14
2.3 Hardware properties .......................................................................................................... 25
2.4 Firmware functions............................................................................................................ 27
2.4.1 Quick start instructions for commissioning C/C++ Runtime ................................................. 31
2.4.2 Supplied libraries for C/C++ Runtime .................................................................................. 37
2.5 Operating and display elements......................................................................................... 37
2.5.1 Front view of the CPU with the front panel......................................................................... 37
2.5.2 Front view of the CPU without front panel.......................................................................... 40
2.5.3 Rear view of the CPU.......................................................................................................... 41
2.6 Mode selector switch......................................................................................................... 41
3 Connecting up ..................................................................................................................................... 42
4 Interrupts, error messages, diagnostics and system alarms ............................................................... 47
4.1 Status and error display of the CPU..................................................................................... 47
5 Technical specifications....................................................................................................................... 50
A Dimensional drawing .......................................................................................................................... 65

CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0)
Equipment Manual, 07/2021, A5E40882737-AB 7
Documentation guide
1
The documentation for the SIMATIC S7-1500 automation system and the SIMATIC ET 200MP
distributed I/O system is arranged into three areas.
This arrangement enables you to access the specific content you require.
Basic information
The System Manual and Getting Started describe in detail the configuration, installation,
wiring and commissioning of the SIMATIC S7-1500 and ET 200MP systems. The STEP 7 online
help supports you in the configuration and programming.
Device information
Product manuals contain a compact description of the module-specific information, such as
properties, wiring diagrams, characteristics and technical specifications.
General information
The function manuals contain detailed descriptions on general topics regarding the SIMATIC
S7-1500 and ET 200MP systems, e.g. diagnostics, communication, motion control, Web
server, OPC UA.
You can download the documentation free of charge from the Internet
(https://support.industry.siemens.com/cs/ww/en/view/109742691).
Changes and supplements to the manuals are documented in a Product Information.
You can download the product information free of charge from the Internet
(https://support.industry.siemens.com/cs/us/en/view/68052815).

Documentation guide
CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0)
8Equipment Manual, 07/2021, A5E40882737-AB
Manual Collection S7-1500/ET 200MP
The Manual Collection contains the complete documentation on the SIMATIC S7-1500
automation system and the ET 200MP distributed I/O system gathered together in one file.
You can find the Manual Collection on the Internet
(https://support.industry.siemens.com/cs/ww/en/view/86140384).
SIMATIC S7-1500 comparison list for programming languages
The comparison list contains an overview of which instructions and functions you can use for
which controller families.
You can find the comparison list on the Internet
(https://support.industry.siemens.com/cs/ww/en/view/86630375).
"mySupport"
With "mySupport", your personal workspace, you make the best out of your Industry Online
Support.
In "mySupport", you can save filters, favorites and tags, request CAx data and compile your
personal library in the Documentation area. In addition, your data is already filled out in
support requests and you can get an overview of your current requests at any time.
You must register once to use the full functionality of "mySupport".
You can find "mySupport" on the Internet (https://support.industry.siemens.com/My/ww/en).
Application examples
The application examples support you with various tools and examples for solving your
automation tasks. Solutions are shown in interplay with multiple components in the system -
separated from the focus on individual products.
You will find the application examples on the Internet
(https://support.industry.siemens.com/cs/ww/en/ps/ae).

CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0)
Equipment Manual, 07/2021, A5E40882737-AB 9
Product overview
2
2.1 New functions
New functions of the CPU in firmware version V2.9
New functions Applications Customer benefits Where can I find infor-
mation?
Communication of the CPU
Secure PG/HMI
communication
With STEP 7 and WinCC as of Ver-
sion V17, SIMATIC S7-1500 CPUs
and ET 200 CPUs from firmware
version 2.9 support innovated and
standardized secure PG/PC and HMI
communication – referred to as
Secure PG/HMI communication for
short.
Secure and standardized creation or
assignment of PLC communication
certificates
Communication function
manual
(https://support.industry.sie
mens.com/cs/ww/en/view/5
9192925)
Protection of
confidential con-
figuration data
You have the option of assigning a
password for protecting confiden-
tial configuration data of the re-
spective CPU. This refers to data
such as private keys that are re-
quired for the proper functioning
of certificate-based protocols.
Additional password protection of
confidential configuration data
OPC UA: Alarms
& Conditions OPC UA clients from any manufac- turer can subscribe to messages of
the CPU via OPC UA Alarms & Con-
ditions.
Messages created once via OPC UA
are available as events and alarms
without any further measures having
to be taken. The messages can be
displayed by any display device with
corresponding OPC UA client func-
tionality.
OPC UA: Certifi-
cate manage-
ment via Global
Discovery Server
(GDS)
Via GDS push management func-
tions:
•Automatic update of OPC UA
certificates of an S7-1500 CPU
•Transfer of updated certificates
and lists in RUN operating state
of the CPU
The automation of the certificate
management eliminates any manual
work required for reconfiguring the
CPU, for example, after a certificate
has expired, and a new download to
the CPU.