Siemens Simatic S7-1500/ET 200MP User manual

Digital input module DI 16x24VDC BA
(6ES7521-1BH10-0AA0)
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SIMATIC
S7-1500/ET 200MP
Digital input module DI 16x24VDC BA
(6ES7521-1BH10-0AA0)
Manual
09/2014
A5E32363114
-AB
Preface
Documentation guide
1
Product overview
2
Wiring
3
Address space
4
Diagnostics alarms
5
Technical specifications
6
Dimensional drawing
A
Open Source Software
B

Siemens AG
Industry Sector
Postfach 48 48
90026 NÜRNBERG
GERMANY
A5E32363114-AB
Ⓟ
09/2014 Subject to change
Copyright © Siemens AG 2014.
All rights
reserved
Legal information
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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
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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 16x24VDC BA (6ES7521-1BH10-0AA0)
4Manual, 09/2014, A5E32363114-AB
Preface
Purpose of the documentation
This product manual supplements the system manuals:
●S7-1500 Automation System
●ET 200MP Distributed I/O System
Functions that relate in general to the systems are described in these system manuals.
The information provided in this product manual and in the system/function manuals
supports you in commissioning the systems.
Changes compared to previous version
Compared to the previous version, this product manual includes detailed information on the
module functions, for example, as of which STEP 7 version the function is supported.
Conventions
The term "CPU" is used in this manual both for the CPUs of the S7-1500 automation system,
as well as 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 sectio
n of the documentation to which particular attention
should be paid.

Preface
Digital input module DI 16x24VDC BA (6ES7521-1BH10-0AA0)
Manual, 09/2014, A5E32363114-AB 5
Security information
Siemens provides products and solutions with industrial security functions that support the
secure operation of plants, solutions, machines, equipment and/or networks. They are
important components in a holistic industrial security concept. With this in mind, Siemens’
products and solutions undergo continuous development. Siemens recommends strongly
that you regularly check for product updates.
For the secure operation of Siemens products and solutions, it is necessary to take suitable
preventive action (e.g. cell protection concept) and integrate each component into a holistic,
state-of-the-art industrial security concept. Third-party products that may be in use should
also be considered. You can find more information about industrial security on the Internet
(http://www.siemens.com/industrialsecurity).
To stay informed about product updates as they occur, sign up for a product-specific
newsletter. You can find more information on the Internet
(http://support.automation.siemens.com).
Open Source Software
Open-source software is used in the firmware of the product described. 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 in the appendix.

Digital input module DI 16x24VDC BA (6ES7521-1BH10-0AA0)
6Manual, 09/2014, A5E32363114-AB
Table of contents
Preface ................................................................................................................................................... 4
1 Documentation guide .............................................................................................................................. 7
2 Product overview .................................................................................................................................... 9
2.1 Properties................................................................................................................................. 9
3 Wiring ................................................................................................................................................... 11
3.1 Wiring and block diagram ...................................................................................................... 11
4 Address space ...................................................................................................................................... 13
4.1 Address space ....................................................................................................................... 13
5 Diagnostics alarms................................................................................................................................ 17
5.1 Status and error displays ....................................................................................................... 17
6 Technical specifications ........................................................................................................................ 19
A Dimensional drawing............................................................................................................................. 22
B Open Source Software.......................................................................................................................... 24

Digital input module DI 16x24VDC BA (6ES7521-1BH10-0AA0)
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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
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
Manuals contain a compact description of the module-specific information, such as
properties, terminal diagrams, characteristics, 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.
You can download the documentation free of charge from the Internet
(http://www.automation.siemens.com/mcms/industrial-automation-systems-
simatic/en/manual-overview/tech-doc-controllers/Pages/Default.aspx).
Changes and supplements to the manuals are documented in a Product Information.

Documentation guide
Digital input module DI 16x24VDC BA (6ES7521-1BH10-0AA0)
8Manual, 09/2014, A5E32363114-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
(http://support.automation.siemens.com/WW/view/en/86140384).
My Documentation Manager
The My Documentation Manager is used to 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 the My Documentation Manager on the Internet
(http://support.automation.siemens.com/WW/view/en/38715968).
Applications & Tools
Applications & Tools supports 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 in individual products.
You can find Applications & Tools on the Internet
(http://support.automation.siemens.com/WW/view/en/20208582).
CAx Download Manager
The CAx Download Manager is used to access the current product data for your CAx or CAe
systems.
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 the CAx Download Manager on the Internet
(http://support.automation.siemens.com/WW/view/en/42455541).

Digital input module DI 16x24VDC BA (6ES7521-1BH10-0AA0)
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Product overview
2
2.1
Properties
Part number:
6ES7521-1BH10-0AA0
View of the module
Figure 2-1 View of the DI 16x24VDC BA module

Product overview
2.1 Properties
Digital input module DI 16x24VDC BA (6ES7521-1BH10-0AA0)
10 Manual, 09/2014, A5E32363114-AB
Properties
The module has the following technical properties:
●16 digital inputs; electrically isolated in groups of 16
●Rated input voltage 24 VDC
●Suitable for switches and 2-/3-/4-wire proximity switches
The module supports the following functions:
Table 2- 1 Version dependencies of the module functions
Function
Firmware version
of the module
Configuration software
STEP 7
(TIA Portal)
GSD file in STEP 7
(TIA Portal) V12 or higher,
or STEP 7
V5.5 SP3 or higher
Firmware update
V1.0.0 or higher
V13 or higher
X
Identification data I&M0 to I&M3
V1.0.0 or higher
V13 or higher
X
Module internal shared input (MSI) V1.0.0 or higher V13 Update 3 or higher
(PROFINET IO only)
X
(PROFINET IO only)
Configurable submodules / submodules for
Shared Device
V1.0.0 or higher V13 Update 3 or higher
(PROFINET IO only)
X
(PROFINET IO only)
You can configure the module with STEP 7 (TIA Portal) and with a GSD file.
Accessories
The following accessories are supplied with the module and can also be ordered separately
as spare parts:
●Front connector (push-in terminals) including cable tie
●Labeling strips
●U connector
●Universal front door
You can find more information on accessories in the S7-1500 Automation System
(http://support.automation.siemens.com/WW/view/en/59191792) system manual and the
ET 200MP Distributed I/O System
(http://support.automation.siemens.com/WW/view/en/59193214) system manual.

Digital input module DI 16x24VDC BA (6ES7521-1BH10-0AA0)
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Wiring
3
3.1
Wiring and block diagram
This section contains the block diagram of the module and outlines various connection
options.
For more information on front connector wiring and creating cable shields, for example, refer
to the "Wiring" section in the S7-1500 Automation System
(http://support.automation.siemens.com/WW/view/en/59191792) and
ET 200MP Distributed I/O System
(http://support.automation.siemens.com/WW/view/en/59193214) system manuals.

Wiring
3.1 Wiring and block diagram
Digital input module DI 16x24VDC BA (6ES7521-1BH10-0AA0)
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Abbreviations used
Meaning of the abbreviations used in the following figure:
M
Ground connector
CHx
Channel or display for the channel status
The figure below shows you how to connect the module and the assignment of the channels
to the addresses (input byte a and input byte b).
①
Backplane bus interface
Figure 3-1 Block diagram and terminal assignment

Digital input module DI 16x24VDC BA (6ES7521-1BH10-0AA0)
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Address space
4
4.1
Address space
The module can be configured in various ways in STEP 7. Depending on the configuration,
additional/different addresses are assigned in the process image of the inputs.
Configuration options of DI 16x24VDC BA
You can configure the module with STEP 7 (TIA Portal) or with a GSD file.
When you configure the module by means of the GSD file, the configurations are available
under different abbreviations/module names.
The following configurations are possible:
Table 4- 1 Configuration options
Configuration
Short designation/
module name in the GSD file
Configuration software, e.g., with STEP 7 (TIA
Portal)
Integrated in hardware
catalog
STEP 7 (TIA Portal)
GSD file in STEP 7
(TIA Portal) V12 or
higher or STEP 7
V5.5 SP3 or higher
1 x 16-channel without value status
DI 16x24VDC BA
V13 or higher
X
2 x 8-channel without value status DI 16x24VDC BA S V13 Update 3 or higher
(PROFINET IO only)
X
(PROFINET IO only)
1 x 16-channel with value status for
module-internal Shared Input with up
to 4 submodules
DI 16x24VDC BA MSI V13 Update 3 or higher
(PROFINET IO only)
X
(PROFINET IO only)

Address space
4.1 Address space
Digital input module DI 16x24VDC BA (6ES7521-1BH10-0AA0)
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Address space for configuration as 1 x 16-channel DI 16x24VDC BA
The figure below shows the address space assignment for configuration as a 1 x 16-channel
module. You can freely assign the start address for the module. The addresses of the
channels are based on the start address.
The letters "a" through "b" are printed on the module. "EB a", for example, stands for module
start address input byte a.
Figure 4-1 Address space for configuration as 1 x 16-channel DI 16x24VDC BA
Address space for configuration as 2 x 8-channel DI 16x24VDC BA S
For the configuration as a 2 x 8-channel module, the channels of the module are divided into
multiple submodules. The submodules can be assigned to different IO controllers when the
module is used in a Shared Device.
The number of usable submodules depends on the interface module used. Please observe
the information in the manual for the particular interface module.
Unlike the 1 x 16-channel module configuration, each of the two submodules has a freely
assignable start address.
Figure 4-2 Address space for configuration as 2 x 8-channel DI 16x24VDC BA S

Address space
4.1 Address space
Digital input module DI 16x24VDC BA (6ES7521-1BH10-0AA0)
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Address space for configuration as 1 x 16-channel DI 16x24VDC BA MSI
The channels 0 to 15 of the module are copied to up to 4 submodules with configuration 1 x
16-channel module (Module-internal Shared Input, MSI). Channels 0 to 15 are then available
with identical input values in different submodules. These submodules can be assigned to up
to four IO controllers when the module is used in a Shared Device. Each IO controller has
read access to the same channels.
The number of usable submodules depends on the interface module used. Please observe
the information in the manual for the particular interface module.
Value status (Quality Information, QI)
The meaning of the value status depends on the submodule involved.
For the 1st submodule (=basic submodule), the value status is not relevant.
For the 2nd to 4th submodule (=MSI submodule), the value status 0 indicates that the value
is incorrect or the basic submodule has not yet been configured (not ready for operation).
The figure below shows the assignment of the address space with submodules 1 and 2.
Figure 4-3 Address space for configuration as 1 x 16-channel DI 16x24VDC BA MSI with value
status

Address space
4.1 Address space
Digital input module DI 16x24VDC BA (6ES7521-1BH10-0AA0)
16 Manual, 09/2014, A5E32363114-AB
The figure below shows the assignment of the address space with submodules 3 and 4.
Figure 4-4 Address space for configuration as 1 x 16-channel DI 16x24VDC BA MSI with value
status

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Diagnostics alarms
5
The module has no selectable diagnostics. Diagnostics alarms, for example, cannot be
output with STEP 7 (TIA Portal).
5.1
Status and error displays
LED displays
The figure below shows you the LED displays (status and error displays) of the
DI 16x24VDC BA.
Figure 5-1 LED displays of the module DI 16x24VDC BA

Diagnostics alarms
5.1 Status and error displays
Digital input module DI 16x24VDC BA (6ES7521-1BH10-0AA0)
18 Manual, 09/2014, A5E32363114-AB
Meaning of the LED displays
The tables below explain the meaning of the status and error displays.
LED RUN/ERROR
Table 5- 1 RUN/ERROR status and error displays
LED
Meaning
Remedy
RUN
ERROR
Off Off
Voltage missing or too low at backplane bus.
•Switch on the CPU and/or the system pow-
er supply modules.
•Verify that the U connectors are inserted.
•Check to see if too many modules are in-
serted.
Flashes
Off
Module is starting up. ---
On Off
Module is ready.
Flashes
Flashes
Hardware defective. Replace the module.
LED CHx
Table 5- 2 CHx status display
LED CHx
Meaning
Remedy
Off
0 = Status of the input signal. ---
On
1 = Status of the input signal. ---

Digital input module DI 16x24VDC BA (6ES7521-1BH10-0AA0)
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Technical specifications
6
Technical specifications of the DI 16x24VDC BA
6ES7521-1BH10-0AA0
Product type designation
DI 16x24VDC BA
General information
Hardware version
E01
Firmware version
V1.0.0
Product function
I&M data
Yes; I&M0 to I&M3
Engineering with
STEP 7 TIA Portal can be configured/integrated
as of version
V13 / V13
STEP 7 can be configured/integrated as of version
V5.5 SP3 / -
Operating mode
MSI
Yes
Supply voltage
Type of supply voltage
DC
Rated value (DC)
24 V
Permitted range, low limit (DC)
20.4 V
Permitted range, high limit (DC)
28.8 V
Power
Power taken from the backplane bus
1.05 W
Power loss
Power loss, typ.
1.8 W
Digital inputs
Number of inputs
16
Sinking/sourcing input
Sinking input
Input characteristic curve acc. to IEC 61131,
type 3
Yes
Input voltage
Rated value, DC
24 V
for signal "0"
-30 to +5 V
for signal "1"
11 to 30 V
Permitted voltage at input, min.
-30 V; -3 V permanently; -30 V brief reverse
polarity protection
Permitted voltage at input, max.
30 V
Input current
for signal "1", typ.
2.7 mA

Technical specifications
Digital input module DI 16x24VDC BA (6ES7521-1BH10-0AA0)
20 Manual, 09/2014, A5E32363114-AB
6ES7521-1BH10-0AA0
Input delay (for rated value of input voltage)
For standard inputs
•
Configurable No
•
with "0" to "1", min. 3 ms
•
with "0" to "1", max. 4 ms
•
with "1" to "0", min. 3 ms
•
with "1" to "0", max. 4 ms
For interrupt inputs
•
Configurable No
Cable length
Cable length shielded, max.
1000 m
Cable length unshielded, max.
600 m
Encoders
Connectable encoders
2-wire sensor
Yes
•
Permitted quiescent current (2-wire sensor),
max.
1.5 mA
Isochronous mode
Isochronous mode (application synchronized up to
terminal)
No
Interrupts/diagnostics/status information
Interrupts
Diagnostics interrupt
No
Hardware interrupt
No
Diagnostics alarms
Diagnostics
No
Monitoring of the supply voltage
No
Wire break
No
Short
-circuit No
Fuse blown
No
Diagnostics indicator LED
RUN LED
Yes; green LED
ERROR LED
Yes; red LED
MAINT LED
No
Monitoring of the supply voltage
No
Channel status display
Yes; green LED
For channel diagnostics
No
For module diagnostics
No