Siemens Simatic S7-1500 Parts list manual

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SIMATIC
S7-1500
Isochronous mode
Function Manual
10/2018
A5E43884988
-AA
Preface
Documentation guide
1
What is isochronous mode?
2
Use of isochronous mode
3
Time sequence of
synchronization
4
Configuring isochronous
mode
5
Programming isochronous
mode
6

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A5E43884988-AA
Ⓟ
09/2018 Subject to change
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editions.

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Function Manual, 10/2018, A5E43884988-AA 3
Preface
Purpose of the documentation
This function manual provides an overview of the isochronous mode function for I/O modules
that you operate isochronously:
●As central I/O in a SIMATIC S7-1500
●In distributed I/O systems on PROFINET IO
●In distributed I/O systems on PROFIBUS DP
●Jointly as central and distributed I/O on PROFINET IO
The documentation supports you in the configuring and programming of isochronous mode.
Basic knowledge required
The following knowledge is required in order to understand the manual:
●General knowledge of automation technology
●Knowledge of the industrial automation system SIMATIC
●Knowledge about the use of Windows-based computers
●Knowledge about how to use STEP 7 (TIA Portal)
Scope
This documentation is the basic documentation for the SIMATIC S7-1500 automation system
and all SIMATIC products from the PROFINET and PROFIBUS environments. The product
documentation is based on this documentation.
The manual applies to the SIMATIC S7-1500 automation system with CPUs Firmware
Version V2.6 or higher (except S7-1500 Compact CPUs and S7-1500R/H CPUs). SIMATIC
STEP 7 Professional V15.1 or higher is also required.

Preface
Isochronous mode
4Function Manual, 10/2018, A5E43884988-AA
Conventions
STEP 7:
We refer to "STEP 7" in this documentation as a synonym for the configuration and
programming software "STEP 7 as of V15.1 (TIA Portal)" and subsequent versions.
This documentation contains pictures of the devices described. The figures may differ
slightly from the device supplied.
You should also pay particular attention to notes such as the one shown below:
Note
A note contains important information on the product, on handling of the product and
on the
section of the documentation to which you should pay particular attention.
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segmentation) are in place.
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Preface
Isochronous mode
Function Manual, 10/2018, A5E43884988-AA 5
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6Function Manual, 10/2018, A5E43884988-AA
Table of contents
Preface ................................................................................................................................................... 3
1 Documentation guide .............................................................................................................................. 7
2 What is isochronous mode? .................................................................................................................. 12
3 Use of isochronous mode...................................................................................................................... 15
4 Time sequence of synchronization ........................................................................................................ 17
4.1 Time sequence of synchronization on PROFINET IO and PROFIBUS DP........................... 17
4.2 Time sequence of synchronization in the central configuration............................................. 19
5 Configuring isochronous mode.............................................................................................................. 22
5.1 Configuring isochronous mode for distributed I/O on PROFINET IO .................................... 24
5.2 Configuring isochronous mode for central I/O in S7-1500..................................................... 26
5.3 Configuring joint isochronous operation of central and distributed I/O .................................. 30
5.4 Configuring isochronous mode for distributed I/O on PROFIBUS DP................................... 32
5.5 Configuring isochronous mode for a Motion Control application ........................................... 34
5.6 Setting the application cycle and delay time.......................................................................... 41
6 Programming isochronous mode........................................................................................................... 43
6.1 Program execution according to the IPO model .................................................................... 44
6.2 Program execution according to the OIP model .................................................................... 46
6.3 Programming of isochronous mode for Motion Control applications ..................................... 48
Glossary ............................................................................................................................................... 49
Index .................................................................................................................................................... 54

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Function Manual, 10/2018, A5E43884988-AA 7
Documentation guide
1
The documentation for the SIMATIC S7-1500 automation system, for CPU 1516pro-2 PN
based on SIMATIC S7-1500, and for the distributed I/O systems SIMATIC ET 200MP,
ET 200SP and ET 200AL is divided into three areas.
This division allows you easier access to the specific information you require.
Basic information
System manuals and Getting Started manuals describe in detail the configuration,
installation, wiring and commissioning of the SIMATIC S7-1500, ET 200MP, ET 200SP and
ET 200AL systems; use the corresponding operating instructions for CPU 1516pro-2 PN.
The STEP 7 online help supports you in configuration and programming.
Device information
Product manuals contain a compact description of the module-specific information, such as
properties, terminal diagrams, characteristics and technical specifications.

Documentation guide
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8Function Manual, 10/2018, A5E43884988-AA
General information
The function manuals contain detailed descriptions on general topics such as diagnostics,
communication, Motion Control, Web server, OPC UA.
You can download the documentation free of charge from the Internet
(https://support.industry.siemens.com/cs/ww/en/view/109742705).
Changes and additions to the manuals are documented in product information sheets.
You will find the product information on the Internet:
●S7-1500/ET 200MP (https://support.industry.siemens.com/cs/us/en/view/68052815)
●ET 200SP (https://support.industry.siemens.com/cs/us/en/view/73021864)
●ET 200AL (https://support.industry.siemens.com/cs/us/en/view/99494757)
Manual Collections
The Manual Collections contain the complete documentation of the systems put together in
one file.
You will find the Manual Collections on the Internet:
●S7-1500/ET 200MP (https://support.industry.siemens.com/cs/ww/en/view/86140384)
●ET 200SP (https://support.industry.siemens.com/cs/ww/en/view/84133942)
●ET 200AL (https://support.industry.siemens.com/cs/ww/en/view/95242965)
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(https://support.industry.siemens.com/My/ww/en/documentation).

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Function Manual, 10/2018, A5E43884988-AA 9
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In the CAx data area in "mySupport", you can access the current product data for your CAx
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You configure your own download package with a few clicks.
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macro files
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This tool is the successor of the SIMATIC Selection Tool and combines the known
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