Siemens Simatic S7-1500 Technical Document

EQUIPMENT MANUAL
support.industry.siemens.com
6ES7516-3TN00-0AB0
CPU 1516T-3 PN/DP
11/2022Edition
SIMATIC
S7-1500

Introduction 1
Safety instructions 2
Product overview 3
Connecting up 4
Interrupts, error messages,
diagnostics and system
alarms 5
Technical specifications 6
Dimensional drawing A
SIMATIC
S7-1500
CPU 1516T-3 PN/DP
(6ES7516-3TN00-0AB0)
Equipment Manual
11/2022
A5E40898375-AC

Siemens AG
Digital Industries
Postfach 48 48
90026 NÜRNBERG
GERMANY
A5E40898375-AC
Ⓟ 10/2022 Subject to change
Copyright © SiemensAG 2017 - 2022.
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.

4
1 Introduction........................................................................................................................................ 5
1.1 Guide documentation S7-1500/ET 200MP......................................................................... 6
1.1.1 Information classes S7-1500/ET 200MP............................................................................. 6
1.1.2 SIMATIC Technical Documentation.................................................................................... 7
2 Safety instructions.............................................................................................................................. 10
2.1 Security information......................................................................................................... 10
3 Product overview................................................................................................................................ 11
3.1 New functions.................................................................................................................. 11
3.2 Application....................................................................................................................... 13
3.3 Hardware properties......................................................................................................... 19
3.4 Firmware functions........................................................................................................... 21
3.5 Operating and display elements........................................................................................ 26
3.5.1 Front view of the CPU with closed front panel................................................................... 26
3.5.2 Front view of the CPU without front flap........................................................................... 28
3.5.3 Rear view of the CPU......................................................................................................... 29
3.6 Mode selector switch........................................................................................................ 29
4 Connecting up.................................................................................................................................... 30
5 Interrupts, error messages, diagnostics and system alarms.............................................................. 34
5.1 Status and error display of the CPU.................................................................................... 34
6 Technical specifications...................................................................................................................... 37
A Dimensional drawing.......................................................................................................................... 38
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Table of contents

Introduction 1
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 equipment manual and the system manual enables you to
commission the CPU.
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.
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).
5
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1.1 Guide documentation S7-1500/ET 200MP
1.1.1 Information classes S7-1500/ET 200MP
The documentation for the SIMATIC S7-1500 automation system and the ET200MP
distributed I/O system is arranged into three areas.
This arrangement enables you to access the specific content you require. Changes and
supplements to the manuals are documented in a Product Information.
You can download the documentation free of charge from the Internet
(https://support.industry.siemens.com/cs/ww/en/view/109742691).
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.
Examples:
•Getting Started S7-1500
•S7-1500/ET 200MP System Manual
•Online help TIA Portal
Device information
Equipment manuals contain a compact description of the module-specific information, such
as properties, wiring diagrams, characteristics and technical specifications.
Examples:
•Equipment Manuals CPUs
•Equipment Manuals Interface Modules
•Equipment Manuals Digital Modules
•Equipment Manuals Analog Modules
•Equipment Manuals Communications Modules
•Equipment Manuals Technology Modules
•Equipment Manuals Power Supply Modules
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Introduction
1.1 Guide documentation S7-1500/ET 200MP

General information
The function manuals contain detailed descriptions on general topics relating to the SIMATIC
S7-1500 and ET200MPsystems.
Examples:
•Function Manual Diagnostics
•Function Manual Communication
•Function Manual Motion Control
•Function Manual Web Server
•Function Manual Cycle and Response Times
•PROFINET Function Manual
•PROFIBUS Function Manual
Product Information
Changes and supplements to the manuals are documented in a Product Information. The
Product Information takes precedence over the device and system manuals.
You can find the latest Product Information on the S7-1500 and ET200MP systems on the
Internet (https://support.industry.siemens.com/cs/de/en/view/68052815).
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).
1.1.2 SIMATIC Technical Documentation
Additional SIMATIC documents will complete your information. You can find these
documents and their use at the following links and QR codes.
The Industry Online Support gives you the option to get information on all topics. Application
examples support you in solving your automation tasks.
7
Introduction
1.1 Guide documentation S7-1500/ET 200MP
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Overview of the SIMATIC Technical Documentation
Here you will find an overview of the SIMATIC documentation available in Siemens Industry
Online Support:
Industry Online Support International
(https://support.industry.siemens.com/cs/ww/en/view/109742705)
Watch this short video to find out where you can find the overview directly in Siemens
Industry Online Support and how to use Siemens Industry Online Support on your mobile
device:
Quick introduction to the technical documentation of automation products per
video (https://support.industry.siemens.com/cs/us/en/view/109780491)
YouTube video: Siemens Automation Products - Technical Documentation at a
Glance (https://youtu.be/TwLSxxRQQsA)
mySupport
With "mySupport" you can get the most out of your Industry Online Support.
Registration You must register once to use the full functionality of "mySupport". After registra
tion, you can create filters, favorites and tabs in your personal workspace.
Support requests Your data is already filled out in support requests, and you can get an overview of
your current requests at any time.
Documentation In the Documentation area you can build your personal library.
Favorites You can use the "Add to mySupport favorites" to flag especially interesting or fre
quently needed content. Under "Favorites", you will find a list of your flagged
entries.
Recently viewed
articles
The most recently viewed pages in mySupport are available under "Recently viewed
articles".
CAx data The CAx data area gives you access to the latest product data for your CAx or CAe
system. You configure your own download package with a few clicks:
• Product images, 2D dimension drawings, 3D models, internal circuit diagrams,
EPLAN macro files
• Manuals, characteristics, operating manuals, certificates
• Product master data
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.
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Introduction
1.1 Guide documentation S7-1500/ET 200MP

You can find the application examples on the Internet.
(https://support.industry.siemens.com/cs/ww/en/ps/ae)
9
Introduction
1.1 Guide documentation S7-1500/ET 200MP
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10
Safety instructions 2
2.1 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/cert).

Product overview 3
3.1 New functions
This section contains an overview of the most important new firmware functions of the CPU
compared to the predecessor CPU (V2.9).
New functions of the CPU in firmware version V3.0
New functions Applications Customer benefits
Communication of the CPU
SNMP network manage
ment protocol
A simple configuration option is available for
using SNMP services. For new configurations,
this is disabled by default in line with "Security-
by-Default".
Can be enabled/disabled in the CPU properties.
Community strings are configurable.
OPC UA server – Reading
the diagnostic status of
the own address space
By using the OPC UA instruction for reading
("OPC_UA_ReadList"), the own namespace of
the OPC UA Server can be accessed.
This allows you to read out the following
statuses and react to them in the user program:
• Status of the own OPC UA server
• Status of the connections of OPCUA clients
• Status of the session
• Status of subscriptions
In this way, connection problems can be quickly
detected, for example, and the plant availability
can be increased.
OPC UA server – Time
stamping of the source
time of nodes
By using the OPC UA instruction for writing
("OPC_UA_WriteList"), it is possible to change
the "SourceTimestamp" as well as the status
code of an OPC UA variable (node).
Distinction between the "source" and "server" time
possible
OPC UA server – Increase
of the configuration lim
its
The following configuration limits have been
increased:
• Possible number of nodes in the server
interface
• Maximum possible number of subscriptions
per session
• For subscription, the recommendation for
monitored values was increased
Further applications for CPUs as OPC UA servers
Web server of the CPU
New Web API methods Many new API methods extend your access
options to the CPU via the Web API.
Additional applications for the web server
Dynamic management of
certificates
The web server certificate for HTTPS communic
ation can now also be managed via the OPC UA
GDS mechanism, without separate download of
the hardware configuration.
Flexible certificate management
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New functions Applications Customer benefits
Allow data access only
via Web API
They limit the functionality of the web server to
the web API based functions. This means that
only encrypted communication via HTTPS is
possible.
Higher security of communication via web server
Technology functions of the CPU
Save absolute encoder adjustment for device
replacement
Saving the adjustment values with the
"MC_SaveAbsoluteEncoderData" instruction saves
having to perform the absolute encoder adjust
ment again after a device replacement.
The "MC_Home" instruction supports the new
"Incremental encoder adjustment" homing
mode.
Extended scope of functions
Active homing of absolute encoders is possible. Extended scope of functions
Absolute encoder adjustment/incremental
encoder adjustment of non-operational
encoders.
The function enables the transfer of actual values
of the operational encoder to a non-operational
encoder.
The "MC_Power" instruction supports coasting-
down.
Extended scope of functions "MC_Power" instruc
tion
The hardware limit switches are configurable as
traversable/non-traversable.
Extended scope of functions
For axes in a synchronous system, the dynamic
filter enables dynamic adaptation of axes with
higher dynamic responses to the axis with the
lowest dynamic response.
With the dynamic filter, axes with different inertia
can be adjusted to each other. Optimization of a
synchronous system
Stop superimposed movements on the axis
with the instruction "MC_HaltSuperimposed"
Use the instruction to stop a superimposed motion
independently of the basic motion.
Axis functions
With the "MC_MotionInSuperimposed" instruc
tion, you specify motion setpoints for the axis
that are determined cyclically by the application
for additional distance, velocity and accelera
tion and are additive to the basic motion.
By specifying superimposed motion setpoints, you
can optimize the motion profile of a basic motion.
Velocity gearing Via a variable gear ratio, synchronous axes can fol
low the velocity of a positioning axis.
Synchronous operation
functions
Synchronization in advance using leading value
distance starting from current leading value
position in camming
Extended scope of functions
The S7-1500 CPU supports up to 64 configured
signals per trace.
Number of configurable signals per trace extendedTrace functionality of
the CPU
Long-term trace: The S7-1500 CPU supports
cycle-granular recording of up to 64 different
tags in a .csv file over a long period (e.g. hours,
days).
Better diagnostic possibilities when analyzing the
course of signals over a long period of time
Reference
You can find an overview of all new functions, improvements and revisions in the respective
firmware versions on the Internet
(https://support.industry.siemens.com/cs/ww/en/view/109478459).
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Product overview
3.1 New functions

3.2 Application
SIMATIC S7-1500 is the modular control system for a wide variety of automation applications
in discrete automation.
SIMATIC S7-1500 is the cost-effective and convenient solution for a broad range of tasks and
offers the following advantages:
•Modular, fanless design
•Simple realization of distributed structures
•User-friendly handling
Areas of application of the SIMATIC S7-1500 automation system include, for example:
•Special-purpose machines
•Textile machinery
•Packaging machines
•General mechanical engineering
•Controller engineering
•Machine tool engineering
•Installation engineering
•Electrical industry and crafts
•Automobile engineering
•Water/waste water
•Food & Beverage
Areas of application of the SIMATIC S7‑1500R/H redundant system include, for example:
•Tunnels
•Airports (e.g. baggage conveyors)
•Subways
•Shipbuilding
•Wastewater treatment plants
•High-bay warehouses
Areas of application of the SIMATIC S7-1500T automation system for advanced motion
control applications include, for example:
•Packaging machines
•Converting applications
•Assembly automation
•Pick-and-place automation
•Palletizers
Several CPUs with various levels of performance and a comprehensive range of modules with
many convenient features are available. Fail-safe CPUs enable use in fail-safe applications.
The modular design allows you to use only the modules that you need for your application.
The controller can be retrofitted with additional modules at any time to expand its range of
tasks.
High industrial suitability due to the high resistance to EMC, shock and vibration enable
universal use of the SIMATIC S7-1500, S7-1500R/H and S7-1500T automation systems.
13
Product overview
3.2 Application
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Performance segments of standard CPUs
The CPUs can be used for smaller and mid-range applications, as well as for the high-end
range of machine and plant automation.
Table 3-1Standard CPUs
CPU Performance segment PROFIBUS
interfaces
PROFINET
IO RT/IRT
interfaces
PROFINET
IO RT inter
face
Basic
PROFINET
functional
ity
Work
memory
Processing
time for bit
operations
CPU1511‑1
PN
Standard CPU for small to
mid-range applications
-- 1 -- -- 1.8MB 25ns
CPU1513‑1
PN
Standard CPU for mid-range
applications
-- 1 -- -- 3.1 MB 25ns
CPU1515‑2
PN
Standard CPU for mid-range
to large applications
-- 1 1 -- 5.5 MB 6ns
CPU1516‑3
PN/DP
Standard CPU for demanding
applications and communica
tion tasks
1 1 1 -- 9.5 MB 6ns
CPU1517‑3
PN/DP
Standard CPU for demanding
applications and communica
tion tasks
1 1 1 -- 10MB 2ns
CPU1518‑4
PN/DP
Standard CPU for high-per
formance applications,
demanding communication
tasks and very short reaction
times
1 1 1 1 66MB 1ns
CPU1518‑4
PN/DP MFP
Standard CPU for high-per
formance applications,
demanding communication
tasks, very short reaction
times and C/C++ blocks for
the user program
1 1 1 1 116*MB 1ns
* 50 MB of the integrated work memory is reserved for the function library of CPU runtime
Performance segments of redundant CPUs
The CPUs of the S7-1500R/H redundant system offer a high degree of reliability and system
availability. A redundant configuration of the most important automation components
reduces the likelihood of production downtimes and the consequences of component errors.
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Product overview
3.2 Application

The higher the risks and costs of a production downtime, the more worthwhile the use of a
redundant system. The avoidance of production downtimes compensates for the generally
higher investment costs.
Table 3-2Redundant CPUs
CPU Performance segment PROFIBUS
interfaces
PROFINET
IO RT/IRT
interfaces
PROFINET
IO RT inter
face
Basic
PROFINET
functional
ity
Work
memory
Processing
time for bit
operations
CPU1513R-1
PN
Redundant CPU for smaller
to mid-range applications
-- 1 -- -- 3.1 MB 50 ns
CPU
1515R-2PN
Redundant CPU for mid-
range to large applications
-- 1 -- 1 5.5 MB 20ns
CPU
1517H-3PN
Redundant CPU for demand
ing applications and commu
nication tasks
-- 1 -- 1 10MB 4ns
CPU
1518HF-4PN
Fail-safe and redundant CPU
for demanding applications
and communication tasks
-- 1 -- 2 69 MB 4ns
Performance segments of compact CPUs
The compact CPUs can be used for smaller to mid-range applications and have an integrated
analog and digital on-board I/O as well as integrated technology functions.
Table 3-3Compact CPUs
CPU Performance segment PROFIBUS
interfaces
PROFINET
IO RT/IRT
interfaces
PROFINET
IO RT inter
face
Basic
PROFINET
functional
ity
Work memory Pro
cessing
time for
bit opera
tions
CPU1511C-1PN Compact CPU for small to
mid-range applications
-- 1 -- -- 1.175MB 60ns
CPU1512C-1PN Compact CPU for mid-
range applications
-- 1 -- -- 1.25MB 48ns
The following table shows the specific properties of the Compact CPUs.
CPU1511C‑1PN CPU1512C‑1PN
Integrated analog inputs/outputs 5 inputs/2 outputs 5 inputs/2 outputs
Integrated digital inputs/outputs 16 inputs/16 outputs 32 inputs/32 outputs
High-speed counters 6 6
Frequency meters 6 (max. 100 kHz) 6 (max. 100 kHz)
Period duration measurement 6 channels 6 channels
Pulse width modulation (PWM output)
Max. 4 (up to 100 kHz) Max. 4 (up to 100 kHz)
Pulse Train Output (PTO output) Max. 4 (up to 100 kHz) Max. 4 (up to 100 kHz)
Frequency output Up to 100 kHz Up to 100 kHz
15
Product overview
3.2 Application
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Performance segments of technology CPUs
The technology CPUs can be used for low and mid-range applications, as well as for the high-
end range of machine and plant automation. Because of their extended motion control
functions, they are primarily used for drive control.
Table 3-4Technology CPUs
CPU Performance segment PROFIBUS
interfaces
PROFINET
IO RT/IRT
interfaces
PROFINET
IO RT inter
face
Basic
PROFINET
functional
ity
Work memory Pro
cessing
time for
bit opera
tions
CPU 1511T-1PN Technology CPU for small
to mid-range applications
-- 1 -- -- 1.95MB 25ns
CPU 1515T-2PN Technology CPU for mid-
range to large applica
tions
-- 1 1 -- 6MB 6ns
CPU1516T-3PN/
DP
Technology CPU for high-
end applications and
communication tasks
1 1 1 -- 10.5 MB 6 ns
CPU1517T-3PN/
DP
Technology CPU for high-
end applications and
communication tasks
1 1 1 -- 11MB 2ns
CPU
1518T-4PN/DP
Technology CPU for high-
performance motion con
trol applications with
large quantities,
demanding communica
tion tasks and very short
reaction times
1 1 1 1 69 MB 1ns
CPU1511TF-1PN
CPU1515TF-2PN
CPU1516TF-3P
N/DP
CPU1517TF-3P
N/DP
CPU
1518TF-4PN/DP
These CPUs are described in the fail-safe CPUs.
Performance segments of fail-safe CPUs
The fail-safe CPUs are intended for users who want to implement demanding standard and
fail-safe applications both centrally and decentrally.
These fail-safe CPUs allow the processing of standard and safety programs on a single CPU.
This allows fail-safe data to be evaluated in the standard user program. The integration also
provides the system advantages and the extensive functionality of SIMATIC for fail-safe
applications.
The fail-safe CPUs are certified for use in safety mode up to:
•Safety class (Safety Integrity Level) SIL 3 according to IEC61508:2010
•Performance Level (PL) e and Category 4 according to ISO 13849-1:2015 or EN ISO
13849-1:2015
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Product overview
3.2 Application

Additional password protection for F-configuration and F-program is set up for IT security.
Table 3-5Fail-safe CPUs
CPU Performance segment PROFIBUS
interfaces
PROFINET
IO RT/IRT
interfaces
PROFINET
IO RT inter
face
Basic
PROFINET
functional
ity
Work memory Pro
cessing
time for
bit opera
tions
CPU1511F-1PN Fail-safe CPU for small to
mid-range applications
-- 1 -- -- 1.95MB 25ns
CPU1511TF-1PN Fail-safe technology CPU
for small to mid-range
applications
-- 1 -- -- 1.95MB 25ns
CPU1513F-1PN Fail-safe CPU for mid-
range applications
-- 1 -- -- 3.4 MB 25ns
CPU1515F-2PN Fail-safe CPU for mid-
range to large applica
tions
-- 1 1 -- 6MB 6ns
CPU1515TF-2PN Fail-safe technology CPU
for high-end applications
and communication tasks
-- 1 1 -- 6MB 6ns
CPU1516F-3PN/
DP
Fail-safe CPU for
demanding applications
and communication tasks
1 1 1 -- 10.5 MB 6ns
CPU1516TF-3P
N/DP
Fail-safe technology CPU
for high-end applications
and communication tasks
1 1 1 -- 10.5 MB 6 ns
CPU1517F-3PN/
DP
Fail-safe CPU for
demanding applications
and communication tasks
1 1 1 -- 11MB 2ns
CPU1517TF-3P
N/DP
Fail-safe technology CPU
for high-end applications
and communication tasks
1 1 1 -- 11MB 2ns
CPU1518F-4PN/
DP
Fail-safe CPU for high-
performance applica
tions, demanding com
munication tasks and
very short reaction times
1 1 1 1 69MB 1ns
CPU1518F-4PN/
DP MFP
Fail-safe CPU for high-
performance applica
tions, demanding com
munication tasks, very
short reaction times and
C/C++ blocks for the user
program
1 1 1 1 119*MB 1ns
* 50 MB of the integrated work memory is reserved for the function library of CPU runtime
17
Product overview
3.2 Application
CPU 1516T-3 PN/DP (6ES7516-3TN00-0AB0)
Equipment Manual, 11/2022, A5E40898375-AC

CPU Performance segment PROFIBUS
interfaces
PROFINET
IO RT/IRT
interfaces
PROFINET
IO RT inter
face
Basic
PROFINET
functional
ity
Work memory Pro
cessing
time for
bit opera
tions
CPU1518TF-4P
N/DP
Technology CPU for high-
performance motion con
trol applications with
large quantities,
demanding communica
tion tasks and very short
reaction times
1 1 1 1 69 MB 1ns
* 50 MB of the integrated work memory is reserved for the function library of CPU runtime
In addition to the CPUs, further components such as SINAMICS drives dispose of integrated
safety functions. Additional information about integrated safety functions in drives can be
found in the manuals for the respective products.
Security Integrated
In conjunction with STEP7, each CPU offers password-based know-how protection against
unauthorized reading out or modification of the program blocks.
Copy protection provides reliable protection against unauthorized reproduction of program
blocks. With copy protection, individual blocks on the SIMATIC memory card can be tied to its
serial number so that the block can only be run if the configured memory card is inserted into
the CPU.
In addition, various access rights can be assigned in the controller to different user groups
using four different authorization levels.
Improved manipulation protection allows changed or unauthorized transfers of engineering
data to be detected by the controller.
The use of an Ethernet CP (CP 1543-1) provides you with additional access protection
through a firewall or possibilities to establish secure VPN connections.
Design and handling
All CPUs of the SIMATIC S7-1500 product series feature a display with plain text information.
The display provides the user with information on the order numbers, firmware version, and
serial number of all connected modules. In addition, the IP address of the CPU and other
network settings can be adapted locally without a programming device. Error messages are
shown on the display directly in plain text. When performing servicing, you can minimize
plant downtimes by quickly accessing the diagnostics alarms. Detailed information about this
and a multitude of other display functions is available in the SIMATICS7-1500 Display Simu
lator (https://support.industry.siemens.com/cs/ww/en/view/109761758).
Uniform front connectors for all modules and integrated potential jumpers for flexible
formation of potential groups simplify storage. Additional components such as circuit
breakers, relays, etc., can be installed quickly and easily, since a DIN rail is implemented in the
rail of the SIMATIC S7-1500. The CPUs of the SIMATIC S7-1500 product series can be
expanded centrally and in a modular fashion with signal modules. Space-saving expansion
enables flexible adaptation to each application.
The system cabling for digital signal modules enables fast and clear connection to sensors
and actuators from the field (fully modular connection consisting of front connector modules,
18 CPU 1516T-3 PN/DP (6ES7516-3TN00-0AB0)
Equipment Manual, 11/2022, A5E40898375-AC
Product overview
3.2 Application

connection cables and I/O modules), as well as easy wiring inside the control cabinet (flexible
connection consisting of front connectors with assembled single conductors).
System diagnostics and alarms
Integrated system diagnostics is activated by default for the CPUs. The different types of
diagnostics are configured instead of programmed. System diagnostics information and
alarms from the drives are displayed consistently and in plain text:
•On the CPU display
•In STEP7
•On the HMI
•On the Web server
This information is available in RUN mode, but also in STOP mode of the CPU. The diagnostic
information is updated automatically when you configure new hardware components.
The CPU is available as a central interrupt server in up to three project languages. The HMI
takes over the display in the project languages defined for the CPU. If you require alarm texts
in additional languages, you can load them into your HMI via the configured connection. The
CPU, STEP7 and their HMI ensure data consistency without additional engineering steps. The
maintenance work is easier.
3.3 Hardware properties
Article number
6ES7516-3TN00-0AB0
19
Product overview
3.3 Hardware properties
CPU 1516T-3 PN/DP (6ES7516-3TN00-0AB0)
Equipment Manual, 11/2022, A5E40898375-AC

View of the module
The following figure shows the CPU1516T‑3PN/DP.
Figure 3-1CPU1516T‑3PN/DP
NOTE
Protective film
Note that a protective film is attached to the display of the CPU when shipped from the
factory. Remove the protective film if necessary.
Properties
The CPU1516T‑3PN/DP has the following properties:
Property Description Additional information
CPU display All CPUs of the SIMATIC S7-1500 product series feature a
display with plain text information. The display provides
information on order numbers, firmware version and
serial numbers of all connected modules. In addition, you
can set the IP address of the CPU and carry out further
network settings. The display shows occurring error mes
sages directly in plain text.
In addition to the functions listed here, a multitude of
other functions that are described in the SIMATIC
S7-1500 Display Simulator are shown on the display.
• S7-1500, ET 200MP system manu
al
(https://support.automation.
siemens.
com/WW/view/en/59191792)
• SIMATIC S7-1500 Display Simulat
or
(https://support.industry.siemens.
com/cs/ww/en/view/109761758)
20 CPU 1516T-3 PN/DP (6ES7516-3TN00-0AB0)
Equipment Manual, 11/2022, A5E40898375-AC
Product overview
3.3 Hardware properties