Siemens SIMATIC S7-155R/H Technical Document

SIMATIC
S7-1500R/H
CPU 1518HF
-4 PN
(6ES7518
-4JP00-0AB0)
Equipment Manual
05/2021
A5E49868646
-AA
Preface
S7-1500R/H
Documentation Guide
1
Product overview
2
Connecting
3
Alarm, error and system
messages
4
Technical specifications
5
Dimension drawing
A

Siemens AG
Digital Industries
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90026 NÜRNBERG
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A5E49868646-AA
Ⓟ
04/2021 Subject to change
Copyright © Siemens AG 2021.
All rights reserved
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.
Trademarks
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.
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 1518HF-4 PN (6ES7518-4JP00-0AB0)
Equipment Manual, 05/2021, A5E49868646-AA 3
Preface
Purpose of the documentation
This manual supplements the system manual of the S7-1500R/H redundant system and 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 1518HF-4 PN.
Note
When using CPU 1518HF
-4 PN in Safety mode, note the description of the fail-safe system
SIMATIC Safety SIMATIC Safety
- Configuring and Programming
(
https://support.industry.siemens.com/cs/ww/en/view/54110126) programming and
operating manual.
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)".
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.
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.

Preface
CPU 1518HF-4 PN (6ES7518-4JP00-0AB0)
4Equipment Manual, 05/2021, A5E49868646-AA
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).
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).
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).
See also
Info Center (https://www.siemens.com/automation/infocenter)

CPU 1518HF-4 PN (6ES7518-4JP00-0AB0)
5Equipment Manual, 05/2021, A5E49868646-AA
Table of contents
Preface ................................................................................................................................................... 3
1 S7-1500R/H Documentation Guide ........................................................................................................ 6
2 Product overview................................................................................................................................... 8
2.1 Configuration and operating principle .................................................................................. 8
2.2 Hardware properties .......................................................................................................... 11
2.3 Firmware functions............................................................................................................ 14
2.4 Operator controls and display elements.............................................................................. 17
2.4.1 Front view of the CPU with closed front flap....................................................................... 17
2.4.2 Front view of the CPU without front flaps........................................................................... 19
2.4.3 Rear view of the CPU.......................................................................................................... 20
2.4.4 Bottom view ...................................................................................................................... 21
2.5 Mode selector.................................................................................................................... 22
3 Connecting .......................................................................................................................................... 23
3.1 Terminal assignment ......................................................................................................... 23
4 Alarm, error and system messages ..................................................................................................... 28
4.1 Status and error display of the CPU..................................................................................... 28
5 Technical specifications....................................................................................................................... 33
5.1 Technical specifications ..................................................................................................... 33
A Dimension drawing ............................................................................................................................. 42
A.1 Dimension drawing............................................................................................................ 42

CPU 1518HF-4 PN (6ES7518-4JP00-0AB0)
Equipment Manual, 05/2021, A5E49868646-AA 6
S7-1500R/H Documentation Guide
1
The documentation for the redundant S7-1500R/H system is divided into three areas.
This division 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 redundant S7-1500R/H system. 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
redundant S7-1500R/H system, e.g. diagnostics, communication.
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/ww/en/view/109742691).

S7-1500R/H Documentation Guide
CPU 1518HF-4 PN (6ES7518-4JP00-0AB0)
Equipment Manual, 05/2021, A5E49868646-AA 7
S7-1500/ET 200MP Manual Collection
The S7-1500/ET 200MP Manual Collection contains the complete documentation on the
redundant S7-1500R/H 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/sc/ww/en/sc/2054).

CPU 1518HF-4 PN (6ES7518-4JP00-0AB0)
Equipment Manual, 05/2021, A5E49868646-AA 8
Product overview
2
2.1 Configuration and operating principle
Structure
The S7-1500H redundant system consists of the following components:
•Two CPUs of the type CPU 1518HF-4 PN
•Two SIMATIC memory cards
•Four synchronization modules (two synchronization modules in each H-CPU)
•Two redundancy connections (two duplex fiber-optic cables)
•IO devices
•Load power supply (optional)

Product overview
2.1 Configuration and operating principle
CPU 1518HF-4 PN (6ES7518-4JP00-0AB0)
Equipment Manual, 05/2021, A5E49868646-AA 9
You mount the CPUs on a common mounting rail or spatially separated on two separate
mounting rails. You connect the two CPUs with fiber-optic cables to two synchronization
modules in each CPU. You set up the PROFINET ring with the PROFINET interfaces X1 P1 R and
X1 P2 R of the CPUs.
①
Optional load current supply
②
First CPU
③
Mounting rail with integrated DIN rail profile
④
Second CPU
⑤
Location of the synchronization modules (not visible in graphic)
⑥
Redundancy connections (fiber-optic cables)
⑦
PROFINET cable (PROFINET ring)
Figure 2-1 Configuration example for S7-1500H
Note
Standard rail adapter
You mount the CPUs on a standardized 35
mm rail using the standard rail adapter.
You can find information on mounting the standard rail adapter in the S7
-
1500R/H redundant
system (https://support.industry.siemens.com/cs/ww/en/view/109754833) System Manual.

Product overview
2.1 Configuration and operating principle
CPU 1518HF-4 PN (6ES7518-4JP00-0AB0)
10 Equipment Manual, 05/2021, A5E49868646-AA
Principle of operation
One of the two CPUs in the redundant system takes on the role of CPU for process control
(primary CPU). The other CPU takes on the role of the following CPU (backup CPU). The role
of the CPUs can change during operation. All relevant data is synchronized from the primary
CPU to the backup CPU via the fiber-optic cables of the redundancy connections.
Synchronization between the primary CPU and backup CPU ensures fast switching between
CPUs in the event of a primary CPU failure. If the primary CPU fails, the backup CPU retains
control of the process as the new primary CPU at the point of interruption.
The redundancy connections consist of two fiber-optic cables, which directly connect the
CPUs via plug-in synchronization modules.
The integrated F functionality with Safety Integrated processes standard and safety
programs. You can find more information in the SIMATIC Safety - Configuring and
Programming (https://support.industry.siemens.com/cs/ww/en/view/54110126)
programming and operating manual.
Additional information
You can find a detailed description of the operation and design of the S7-1500H redundant
system in the system manual for Redundant System S7-1500R/H
(https://support.industry.siemens.com/cs/ww/en/view/109754833).

Product overview
2.2 Hardware properties
CPU 1518HF-4 PN (6ES7518-4JP00-0AB0)
Equipment Manual, 05/2021, A5E49868646-AA 11
2.2 Hardware properties
Article number
6ES7518-4JP00-0AB0
View of the module
The figure below shows CPU 1518HF-4 PN.
Figure 2-2 CPU 1518HF-4 PN
Note
Protective film
Note that there is a removable protective film on the display when the CPUs are delivered.

Product overview
2.2 Hardware properties
CPU 1518HF-4 PN (6ES7518-4JP00-0AB0)
12 Equipment Manual, 05/2021, A5E49868646-AA
Properties
CPU 1518HF-4 PN has the following technical properties:
Property
Description
Additional information
CPU display
All CPUs of the redundant system S7 1500R/H have a
display with plain text information. The display provides
you with diagnostic messages as well as information
about the article number, the firmware version and the
serial number of the CPU.
You can also view and assign the IP addresses, the
PROFINET device name and the redundancy ID of the
CPU. The system IP address can be viewed via STEP 7
but not in the display.
In addition to the functions listed here, a large number
of other functions are available on the display. These
additional functions are described in the SIMATIC S7
1500 Display Simulator.
•Redundant System S7-1500R/H
(https://support.industry.siemens
.com/cs/ww/en/view/109754833)
System Manual
•SIMATIC S7-1500 Display Simula-
tor
(https://support.industry.siemens
.com/cs/ww/en/view/109761758)
Supply voltage
The 24 V DC supply voltage is fed via a 4-pin plug locat-
ed on the front of the CPU. •Section Connecting (Page 23)
•Redundant System S7-1500R/H
(https://support.industry.siemens
.com/cs/ww/en/view/109754833)
System Manual

Product overview
2.2 Hardware properties
CPU 1518HF-4 PN (6ES7518-4JP00-0AB0)
Equipment Manual, 05/2021, A5E49868646-AA 13
Property
Description
Additional information
PROFINET IO
PROFINET IO interface
(X1 P1 R and X1 P2 R)
The CPU has an X1 interface with two ports (X1 P1 R
and X1 P2 R).
•The PROFINET IO interface X1 (default P1 R) is used
to set up the PROFINET ring with the two CPUs and
the IO devices.
•The interface supports PROFINET IO RT (Real-Time)
and PROFINET basic functionality.
Basic PROFINET functionality comprises:
–HMI communication
–Communication with the configuration system
–Communication with a higher-level network
(backbone, router, Internet)
–Communication with another machine or auto-
mation cell
•Redundant System S7-1500R/H
(https://support.industry.siemens
.com/cs/ww/en/view/109754833)
System Manual
•PROFINET
(https://support.industry.siemens
.com/cs/ww/en/view/49948856)
function manual
PROFINET interface (X2 P1
and X3 P1)
Die CPU has an X2 interface with one port (X2 P1) and
an X3 interface with one port (X3 P1).
Interfaces X2 and X3 support the basic functions of
PROFINET.
H-Sync interfaces (X4 P1
and X5 P1)
Die CPU has an X4 interface with one port (X4 P1) and
an X5 interface with one port (X5 P1).
The X4 and X5 interfaces are reserved for the synchro-
nization of the two CPUs.
Synchronization modules
Make the redundancy connections between the two
CPUs via the synchronization modules with fiber-optic
cables.
You plug each synchronization modules in the X4 and
X5 interfaces.
Fiber-optic cables
You connect the two synchronization modules in pairs
to each CPU via a fiber-optic cable.
Operation of the CPUs as
IO controllers
IO controller:
As IO controllers the CPUs address the following con-
figured IO devices:
•IO devices with S2 system redundancy within the
PROFINET ring
•IO devices with S2 system redundancy that are
decoupled from the PROFINET ring via a switch
•Standard IO devices (switched S1 devices)
Accessories
You can find information on the topic of "Accessories/spare parts" in the system manual for
Redundant System S7-1500R/H
(https://support.industry.siemens.com/cs/ww/en/view/109754833).

Product overview
2.3 Firmware functions
CPU 1518HF-4 PN (6ES7518-4JP00-0AB0)
14 Equipment Manual, 05/2021, A5E49868646-AA
2.3 Firmware functions
Functions
CPU 1518HF-4 PN supports the following firmware functions:
Function
Description
Additional information
CPU redundancy
There are two duplicate CPUs that synchronize their
data via two duplex fiber-optic cables, which connect
the CPUs directly to each other via plug-in synchroniza-
tion modules. If one of the CPUs fails, the other CPU
retains control of the process.
Redundant System S7-1500R/H
(https://support.industry.siemens.co
m/cs/ww/en/view/109754833) Sys-
tem Manual
Safety Integrated
The integrated F-functionality processes standard and
safety programs.
This allows fail-safe data to be evaluated in the standard
user program. As a result of the integration, the system
advantages and the extensive functionality of SIMATIC
are also available for fail-safe applications.
The F-CPU is certified for use in safety mode up to:
•Safety Integrity Level SIL3 acc. to IEC 61508
•Performance Level (PL) e and Category 4 according
to ISO 13849-1:2006 or according to EN ISO 13849-
1
Additional password protection for F-configuration and
F-program is set up for IT security.
SIMATIC Safety - Configuring and
Programming
(https://support.industry.siemens.co
m/cs/ww/en/view/54110126) pro-
gramming and operating manual
Integrated system diag-
nostics
The system automatically generates the messages for
the system diagnostics and outputs these messages via
a programming device/PC, HMI device or the integrated
display. System diagnostics information is also available
when the CPUs are in operating state STOP.
Function manual Diagnostics
(https://support.industry.siemens.co
m/cs/ww/en/view/59192926)
Integrated trace func-
tionality
Trace functionality supports you in troubleshooting
and/or optimizing the user program.
You record device tags and evaluate the recordings with
the trace and logic analyzer function. Tags are, for ex-
ample, drive parameters or system and user tags of a
CPU.
Trace and logic analyzer functions are suitable for moni-
toring highly dynamic processes.
Note: Note that the S7-1500R/H redundant system
supports recording of measurements. However, saving
the measurements to the SIMATIC memory card is not
supported.
Function manual Using the trace and
logic analyzer function
(https://support.industry.siemens.co
m/cs/ww/en/view/64897128)

Product overview
2.3 Firmware functions
CPU 1518HF-4 PN (6ES7518-4JP00-0AB0)
Equipment Manual, 05/2021, A5E49868646-AA 15
Function
Description
Additional information
PROFINET IO
System redundancy S2
IO-Devices with S2 system redundancy enable uninter-
rupted operation during a primary backup switchover.
If the role of the CPUs changes, the new primary CPU
takes over the PROFINET IO communication.
•Redundant System S7-1500R/H
(https://support.industry.siemens
.com/cs/ww/en/view/109754833)
System Manual
•Function manual PROFINET
(https://support.industry.siemens
.com/cs/ww/en/view/49948856)
Switched S1 device
The switched S1 device function of the CPU enables
operation of standard IO devices in the S7-1500R/H
redundant system.
Redundant System S7-1500R/H
(https://support.industry.siemens.co
m/cs/ww/en/view/109754833) Sys-
tem Manual
RT (real time)
RT prioritizes PROFINET IO frames over standard frames.
This ensures the required determinism in the automa-
tion technology. In this process the data is transferred
via prioritized Ethernet frames.
Function manual PROFINET
(https://support.industry.siemens.co
m/cs/ww/en/view/49948856)
MRP (Media Redundancy
Protocol)
The Media Redundancy Protocol enables the configura-
tion of redundant networks. Redundant transmission
links (ring topology) ensure that an alternative commu-
nication path is made available if a transmission link
fails.
Within the PROFINET ring, the H-CPUs assume the role
of the MRP Manager following appropriate project con-
figuration and all other devices in the ring assume the
role of the MRP clients.
MRP interconnection
The process MRP interconnection is an enhancement of
MRP and allows redundant coupling of two or more
rings with MRP in PROFINET networks. MRP intercon-
nection is - like MRP - specified in the standard IEC
62439-2 (Edition 3).
PROFIenergy
PROFIenergy is a PROFINET-based data interface for
switching off consumers centrally and with full coordi-
nation during pause times regardless of the manufac-
turer or device type. Through this, the process should
only be provided with the energy that is absolutely
required. Most of the energy is saved by the process.
The PROFINET device itself only contributes a few watts
to the savings potential.
Integrated technology
Integrated closed-loop
control functionality •PID Compact (continuous PID controller)
•PID 3Step (step controller for integrating actuators)
•PID Temp (temperature controller for heating and
cooling with two separate actuators)
Function manual PID Control
(https://support.industry.siemens.co
m/cs/ww/en/view/108210036)
Controlling, measuring
and position detection •TO_BasicPos (control of a SINAMICS drive)
•SSI_Absolute_Encoder (control of position detection
and measuring function of the TM PosInput tech-
nology module)
STEP 7 online help

Product overview
2.3 Firmware functions
CPU 1518HF-4 PN (6ES7518-4JP00-0AB0)
16 Equipment Manual, 05/2021, A5E49868646-AA
Function
Description
Additional information
Security Integrated
Know-how protection
The know-how protection protects user blocks against
unauthorized access and modifications.
Redundant System S7-1500R/H
(https://support.industry.siemens.co
m/cs/ww/en/view/109754833) Sys-
tem Manual
Access protection
You can use authorization levels to assign separate
rights to different user groups.
Integrity protection
The CPUs dispose of integrity protection by default.
Integrity protection identifies possible manipulations of
engineering data on the SIMATIC memory card or dur-
ing data transfer between STEP 7 and the CPUs.
Integrity protection also checks the communication
from a SIMATIC HMI system to the CPUs for possible
manipulations of engineering data.
If integrity protection identifies the manipulation of
engineering data, the user receives a corresponding
message.
Password provider
As an alternative to manual password entry, you can
link a password provider to STEP 7. A password provider
offers the following advantages:
•Convenient handling of passwords. STEP 7 automat-
ically imports the password for the blocks. This
saves you time.
•Optimum block protection because the users do not
know the password itself.

Product overview
2.4 Operator controls and display elements
CPU 1518HF-4 PN (6ES7518-4JP00-0AB0)
Equipment Manual, 05/2021, A5E49868646-AA 17
2.4 Operator controls and display elements
2.4.1 Front view of the CPU with closed front flap
The following figure shows the front view of the CPU 1518HF-4 PN.
①
LEDs for the current operating state and diagnostic status of the CPU
②
Front panel with display
③
Display
④
Control keys
⑤
Front panel of the X4 and X5 interfaces
Figure 2-3 View of CPU 1518HF-4 PN (with front panel) - front
Note
Temperature range for display
To increase its service life, the display switches off at a temperature below the permitted
operating temperature of the device. When the display cools down, it automatically switches
itself on again. When the display is switched off, the LEDs continue to
show the status of the
CPU.
For more information on the temperatures at which the display switches itself on and off,
refer to the Technical specifications (Page 33).

Product overview
2.4 Operator controls and display elements
CPU 1518HF-4 PN (6ES7518-4JP00-0AB0)
18 Equipment Manual, 05/2021, A5E49868646-AA
Pulling and plugging the front panel with display
You can pull and plug the front panel with display during operation.
WARNING
Personal injury and damage to property may occur
If you remove or attach the front panel of a redundant system S7-1500R/H during operation,
personal injury or damage to property can occur in hazardous area zone 2.
Before you remove or fit the front panel, always switch off the power supply to the
S7-1500R/H redundant system in hazardous area zone 2.
Locking the front panel
You can lock the front panel to protect the SIMATIC memory card and the mode selector of
the CPU against unauthorized access.
You can attach a security seal or a padlock with a hoop diameter of 3 mm to the front panel.
Figure 2-4 Locking latch on the CPU
In addition to the mechanical lock, you can also block access to a password-protected CPU on
the display (local lock) and assign a password for the display. You can find additional
information on the display, the configurable protection levels and the local lock in the system
manual for Redundant System S7-1500R/H
(https://support.industry.siemens.com/cs/ww/en/view/109754833).
Reference
You can find detailed information on the individual display options, a training course and a
simulation of the available menu commands in the SIMATIC S7-1500 Display Simulator
(https://support.industry.siemens.com/cs/ww/en/view/109761758).

Product overview
2.4 Operator controls and display elements
CPU 1518HF-4 PN (6ES7518-4JP00-0AB0)
Equipment Manual, 05/2021, A5E49868646-AA 19
2.4.2 Front view of the CPU without front flaps
The figure below shows the operator controls and connection elements of CPU 1518HF-4 PN.
①
Mode selector
②
No function
③
LED displays for the ports of the X4 and X5 interfaces
④
MAC addresses of the X4 and X5 interfaces
⑤
H-Sync X4 and X5 interfaces with 1 port each (not visible in graphic)
⑥
Fixing screws
⑦
Connector for power supply
⑧
PROFINET IO interface X1 with 2 ports
⑨
PROFINET IO interface X2 and X3 each with 1 port
⑩
MAC addresses of the X1, X2 and X3 interfaces
⑪
LED displays for the ports of the X1, X2 and X3 interfaces
⑫
Slot for the SIMATIC memory card
⑬
Display connector
⑭
LEDs for the current operating state and diagnostic status of the CPU
Figure 2-5 View of CPU 1518HF-4 PN (without front panel) - front