Siemens Simatic S7-1500 User manual

___________________
___________________
___________________
___________________
___________________
___________________
___________________
___________________
___________________
SIMATIC
S7-1500/ET 200MP
Digital input module
DI 16x24...125VUC HF
(6ES7521-7EH00-0AB0)
Manual
12/2016
A5E35681478
-AC
Preface
Documentation guide
1
Product overview
2
Wiring
3
Parameters/address space
4
Interrupts/diagnostic alarms
5
Technical specifications
6
Dimensional drawing
A
Parameter data records
B

Siemens AG
Division Digital Factory
Postfach 48 48
90026 NÜRNBERG
GERMANY
A5E35681478-AC
Ⓟ
12/2016 Subject to change
Copyright © Siemens AG 2015 - 2016.
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.

Digital input module DI 16x24...125VUC HF (6ES7521-7EH00-0AB0)
4Manual, 12/2016, A5E35681478-AC
Preface
Purpose of the documentation
This manual supplements the S7-1500/ET 200MP
(https://support.industry.siemens.com/cs/ww/en/view/59191792) system manual.
Functions that relate in general to the systems are described in these system manuals.
The information provided in this manual and in the system/function manuals supports you in
commissioning the systems.
Changes compared to previous version
Compared to the previous version, this manual contains the following change:
Technical specifications have been updated: Module is M/P reading.
Conventions
The term "CPU" is used in this manual both for the CPUs of the S7-1500 automation system
and for interface modules of the ET 200MP distributed I/O system.
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
Digital input module DI 16x24...125VUC HF (6ES7521-7EH00-0AB0)
Manual, 12/2016, A5E35681478-AC 5
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 only form one element of such a concept.
Customer is responsible to prevent unauthorized access to its plants, systems, machines
and networks. Systems, machines and components should only be connected to the
enterprise network or the internet if and to the extent necessary and with appropriate security
measures (e.g. use of firewalls and network segmentation) in place.
Additionally, Siemens’ guidance on appropriate security measures should be taken into
account. For more information about industrial security, please visit
(http://www.siemens.com/industrialsecurity).
Siemens’ products and solutions undergo continuous development to make them more
secure. Siemens strongly recommends to apply product updates as soon as available and to
always use the latest product versions. Use of product versions that are no longer supported,
and failure to apply latest updates may increase customer’s exposure to cyber threats.
To stay informed about product updates, subscribe to the Siemens Industrial Security RSS
Feed under (http://www.siemens.com/industrialsecurity).
Open Source Software
Open-source software is used in the firmware of the I/O modules. Open Source Software is
provided free of charge. We are liable for the product described, including the open-source
software contained in it, pursuant to the conditions applicable to the product. Siemens
accepts no liability for the use of the open source software over and above the intended
program sequence, or for any faults caused by modifications to the software.
For legal reasons, we are obliged to publish the original text of the license conditions and
copyright notices. Please read the information relating to this on the Internet
(https://support.industry.siemens.com/cs/ww/en/view/109741045).

Digital input module DI 16x24...125VUC HF (6ES7521-7EH00-0AB0)
6Manual, 12/2016, A5E35681478-AC
Table of contents
Preface ................................................................................................................................................... 4
1 Documentation guide .............................................................................................................................. 7
2 Product overview .................................................................................................................................. 11
2.1 Properties............................................................................................................................... 11
3 Wiring ................................................................................................................................................... 13
3.1 Wiring and block diagram ...................................................................................................... 13
4 Parameters/address space ................................................................................................................... 15
4.1 Parameters............................................................................................................................. 15
4.2 Declaration of parameters...................................................................................................... 16
4.3 Address space ....................................................................................................................... 17
5 Interrupts/diagnostic alarms .................................................................................................................. 21
5.1 Status and error displays ....................................................................................................... 21
5.2 Interrupts ................................................................................................................................ 23
5.3 Diagnostics alarms................................................................................................................. 25
6 Technical specifications ........................................................................................................................ 26
A Dimensional drawing............................................................................................................................. 30
A.1 Dimensional drawing.............................................................................................................. 30
B Parameter data records ........................................................................................................................ 32
B.1 Parameter assignment and structure of the parameter data records.................................... 32
B.2 Structure of the parameter data records................................................................................ 33

Digital input module DI 16x24...125VUC HF (6ES7521-7EH00-0AB0)
Manual, 12/2016, A5E35681478-AC 7
Documentation guide
1
The documentation for the SIMATIC S7-1500 automation system, the CPU 1516pro-2 PN
based on SIMATIC S7-1500 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. For
CPU 1516pro-2 PN you use the corresponding operating instructions. 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.

Documentation guide
Digital input module DI 16x24...125VUC HF (6ES7521-7EH00-0AB0)
8Manual, 12/2016, A5E35681478-AC
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
(http://w3.siemens.com/mcms/industrial-automation-systems-simatic/en/manual-
overview/Pages/Default.aspx).
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).
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).
"mySupport" - Documentation
In the Documentation area in "mySupport" you can combine entire manuals or only parts of
these to your own manual.
You can export the manual as PDF file or in a format that can be edited later.
You can find "mySupport" - Documentation on the Internet
(http://support.industry.siemens.com/My/ww/en/documentation).

Documentation guide
Digital input module DI 16x24...125VUC HF (6ES7521-7EH00-0AB0)
Manual, 12/2016, A5E35681478-AC 9
"mySupport" - CAx data
In the CAx data area in "mySupport", you can access the current product data for your CAx
or CAe system.
You configure your own download package with a few clicks.
In doing so you can select:
●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" - CAx data on the Internet
(http://support.industry.siemens.com/my/ww/en/CAxOnline).
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).
TIA Selection Tool
With the TIA Selection Tool, you can select, configure and order devices for Totally
Integrated Automation (TIA).
This tool is the successor of the SIMATIC Selection Tool and combines the known
configurators for automation technology into one tool.
With the TIA Selection Tool, you can generate a complete order list from your product
selection or product configuration.
You can find the TIA Selection Tool on the Internet
(http://w3.siemens.com/mcms/topics/en/simatic/tia-selection-tool).

Documentation guide
Digital input module DI 16x24...125VUC HF (6ES7521-7EH00-0AB0)
10 Manual, 12/2016, A5E35681478-AC
SIMATIC Automation Tool
You can use the SIMATIC Automation Tool to run commissioning and maintenance activities
simultaneously on various SIMATIC S7 stations as a bulk operation independently of the TIA
Portal.
The SIMATIC Automation Tool provides a multitude of functions:
●Scanning of a PROFINET/Ethernet network and identification of all connected CPUs
●Address assignment (IP, subnet, gateway) and station name (PROFINET device) to a
CPU
●Transfer of the date and the programming device/PC time converted to UTC time to the
module
●Program download to CPU
●Operating mode switchover RUN/STOP
●Localization of the CPU by means of LED flashing
●Reading out CPU error information
●Reading the CPU diagnostic buffer
●Reset to factory settings
●Updating the firmware of the CPU and connected modules
You can find the SIMATIC Automation Tool on the Internet
(https://support.industry.siemens.com/cs/ww/en/view/98161300).
PRONETA
With SIEMENS PRONETA (PROFINET network analysis), you analyze the PROFINET
network during commissioning. PRONETA features two core functions:
●The topology overview independently scans PROFINET and all connected components.
●The IO check is a fast test of the wiring and the module configuration of a system.
You can find SIEMENS PRONETA on the Internet
(https://support.industry.siemens.com/cs/ww/en/view/67460624).