Siemens Simatic S7-300 Instruction sheet

Configuring and commissioning S7 CPs
for Industrial Ethernet
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SIMATIC NET
S7-300/400 - Industrial Ethernet /
PROFINET
Configuring and commissioning S7
CPs for Industrial Ethernet
Configuration Manual
Part A - General application
09/2013
C79000
-G8976-C182-13
This manual...
Communication via Ethernet
CPs in S7 stations
1
Characteristics of the
Ethernet CPs
2
Configuring the Ethernet CP
with STEP 7
3
SEND/RECEIVE interface in
the user program
4
Configuring communications
connections
5
CP as PROFINET IO
controller
6
Intelligent PROFINET IO
device with S7-300 CP
7
Sending process messages
by email
8
File management and file
access with FTP/FTPS
9
S7-CP Advanced as Web
server: HTML process
control
10
Web diagnostics
11
STEP 7 special diagnostics
12
Downloading firmware
13
Connector pinout
A
References
B
Linking to other systems with
FETCH/WRITE
C
Document history
D

Siemens AG
Industry Sector
Postfach 48 48
90026 NÜRNBERG
GERMANY
Order number: C79000-G8976-C182
Ⓟ
09/2013 Technical data subject to change
Copyright © Siemens AG 2001 - 2013.
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.

Configuring and commissioning S7 CPs for Industrial Ethernet
Configuration Manual, 09/2013, C79000-G8976-C182-13 3
This manual...
●... supports you when commissioning your SIMATIC NET CP modules in an S7 station.
●... supports you so that your applications can communicate successfully and effectively
via the SIMATIC NET CPs.
●... expands the description in the online documentation of the STEP 7 configuration
software. You should always read the instructions on the individual topics available there.
Audience
This manual is intended for commissioning engineers, programmers of STEP 7 programs
and service personnel.
Scope of this manual
Note
Note that the availability of the functions described here for the device type you are using
depends on the firmware version of the CP and the versio
n of STEP
7. You can check which
functions your module supports in the description of the properties dialog for the module in
STEP 7.
Note
STEP 7
In this manual, the name STEP 7 is used for all the available versions of STEP 7.
This manual is valid for the following versions of the configuration software:
●STEP 7 V5.5 SP2 Hotfix 4
In addition to this, for CP modules with integrated Industrial Ethernet security
functionality: Security Configuration Tool (SCT) version V3.1
●STEP 7 Professional V12.0 SP1
Description of the STEP 7 functions
This manual takes into account the expanded information in the help systems and
information systems of the STEP 7 configuration tools. Explicit screenshots and explanations
of input dialogs have therefore been largely avoided in this manual.
If specific properties relate to the version of STEP 7, this is indicated in the text.

This manual...
Configuring and commissioning S7 CPs for Industrial Ethernet
4Configuration Manual, 09/2013, C79000-G8976-C182-13
New in this release
Editorial revisions
Note
You should also read the history of this manual in the appendix in Chapter
Document history
(Page
241).
Replaced documentation
This manual replaces the manual release 10/2012.
Abbreviations / short forms
The following abbreviations or short forms for CP groups are used in this manual:
●
"Advanced CP"
The term "Advanced CP" stands for CP modules with e-mail, FTP or Web functions and
PROFINET CBA. The term "Advanced" is used in the product name of the relevant
modules (for example CP 343–1 Advanced).
●
"Security CP"
In the context of the description of CP modules, the term "security CP" means CPs with
integrated Industrial Ethernet security functionality (CP x43–1 Advanced as of V3.0).
The documentation for SIMATIC NET S7 CPs
The documentation for SIMATIC NET S7 CPs consists of the following parts:
●Manual Part A - Configuration manual "Configuring and Commissioning S7 CPs for
PROFIBUS" (this document)
●Manual Part B - "S7-CPs for Industrial Ethernet - CPxxx"
Refer to /1/ (Page 227).
●SIMATIC NET Industrial Ethernet Security – Basics and Application - configuration
manual
Refer to /16/ (Page 232).
●Program blocks for SIMATIC NET S7 CPs - programming manual
Refer to /10/ (Page 230).
Contains the detailed description of the program blocks for the following services:
–Open communications services
–Access coordination with FETCH/WRITE
–Connection and system diagnostics
–FTP services
–Programmed connections and IP configuration

This manual...
Configuring and commissioning S7 CPs for Industrial Ethernet
Configuration Manual, 09/2013, C79000-G8976-C182-13 5
CP documentation in the Manual Collection (order no. A5E00069051)
The "SIMATIC NET Manual Collection" DVD contains the device manuals and descriptions
of all SIMATIC NET products current at the time it was created. It is updated at regular
intervals.
Version History / Current Downloads for the SIMATIC NET S7 CPs
The "Version History/Current Downloads for SIMATIC NET S7 CPs" provides information on
all CPs available up to now for SIMATIC S7 (Industrial Ethernet, PROFIBUS and IE/PB
Link).
An up-to-date version of this document can be found at on the Internet under the entry ID:
9836605 (http://support.automation.siemens.com/WW/view/en/9836605)
FAQs on the Internet
You will find detailed information (FAQs) on using the CPs on the Internet under the
following entry number (entry type "FAQ"):
17844971 (http://support.automation.siemens.com/WW/news/en/17844971)
Information on the current program block versions (FCs/FBs)
You should always use the latest block versions for new user programs. You will find
information on the current block versions and the current blocks for downloading on the
Internet under the entry ID:
8797900 (http://support.automation.siemens.com/WW/view/en/8797900)
When replacing a CP, follow the instructions in the device-specific Part B of this manual.
SIMATIC NET Quick Start CD: Examples relating to communication
The Quick Start CD that can be ordered separately is a treasure-trove of sample programs
and configurations.
You can order this directly via the Internet under the entry ID:
21827955 (http://support.automation.siemens.com/WW/view/en/21827955)
Additional information on SIMATIC S7
You will find additional information on SIMATIC automation systems on the Quick Start CD
and from the Customer Support Online services at:
General information on SIMATIC NET
(http://www.automation.siemens.com/net/index_00.htm)
or
Product information and downloads (http://support.automation.siemens.com/WW/view/en)

This manual...
Configuring and commissioning S7 CPs for Industrial Ethernet
6Configuration Manual, 09/2013, C79000-G8976-C182-13
References /.../
References to other documentation are shown in slashes /.../. Based on these numbers, you
can find the title of the documentation in the references at the end of the manual.
See also
Web diagnostics (Page 167)
Downloading firmware (Page 217)
Industrial Ethernet Security (Page 14)
SIMATIC NET glossary
Explanations of the specialist terms used in this documentation can be found in the SIMATIC
NET glossary.
You will find the SIMATIC NET glossary here:
●SIMATIC NET Manual Collection
The DVD ships with certain SIMATIC NET products.
●On the Internet under the following entry ID:
50305045 (http://support.automation.siemens.com/WW/view/en/50305045)

Configuring and commissioning S7 CPs for Industrial Ethernet
Configuration Manual, 09/2013, C79000-G8976-C182-13 7
Table of contents
This manual... ......................................................................................................................................... 3
1 Communication via Ethernet CPs in S7 stations .................................................................................... 13
1.1 Industrial Ethernet........................................................................................................................13
1.2 Industrial Ethernet Security..........................................................................................................14
1.3 SIMATIC S7 communication options with Ethernet CPs .............................................................16
1.3.1 Types of communication ..............................................................................................................16
1.3.2 The communications services of the Ethernet CPs .....................................................................20
1.3.3 Operation using a configured or programmed database .............................................................21
1.4 PG/OP communication via Industrial Ethernet ............................................................................21
1.4.1 PG communication with STEP 7 over Industrial Ethernet ...........................................................23
1.4.2 OP mode: Connecting HMI/ monitoring devices via Industrial Ethernet......................................24
1.5 S7 communication via Industrial Ethernet ...................................................................................24
1.6 Open communications services (SEND/RECEIVE interface)......................................................28
1.7 FETCH/WRITE services (server).................................................................................................30
1.8 Networking stations with STEP 7.................................................................................................31
2 Characteristics of the Ethernet CPs....................................................................................................... 33
2.1 Communications processors for S7300.......................................................................................33
2.2 Communications processors for S7400.......................................................................................34
2.3 Slot rules for SIMATIC S7300......................................................................................................35
2.3.1 Permitted slots .............................................................................................................................35
2.3.2 Number of SIMATIC NET CPs being operated at the same time................................................35
2.3.3 Multicomputing .............................................................................................................................35
2.3.4 Removing/inserting (module replacement) ..................................................................................35
2.3.5 Note on S7300 CPU: Connection resources ...............................................................................36
2.4 Slot rules for SIMATIC S7400......................................................................................................36
2.4.1 Permitted slots .............................................................................................................................36
2.4.2 Number of SIMATIC NET CPs being operated at the same time................................................36
2.4.3 Multicomputing .............................................................................................................................37
2.4.4 Removing/inserting (module replacement) ..................................................................................37
2.4.5 Note on S7400 CPU: Connection resources ...............................................................................38
3 Configuring the Ethernet CP with STEP 7 ............................................................................................. 39
3.1 How to commission an Ethernet CP ............................................................................................39
3.2 Configuring - follow the steps below ............................................................................................39
3.2.1 Overview ......................................................................................................................................39
3.2.2 Networking Ethernet CP ..............................................................................................................40
3.3 Setting further CP properties .......................................................................................................42
3.3.1 Overview ......................................................................................................................................42

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8Configuration Manual, 09/2013, C79000-G8976-C182-13
3.3.2 "General" parameter group ......................................................................................................... 44
3.3.3 Parameter / function "Module addresses"................................................................................... 45
3.3.4 "Options / Settings" parameter group ......................................................................................... 46
3.3.5 "Time-of-day synchronization" parameter group - mode ............................................................ 50
3.3.6 "IP access protection" parameter group ..................................................................................... 52
3.3.7 "IP configuration" parameter group ............................................................................................. 55
3.3.8 "User management" parameter group ........................................................................................ 57
3.3.9 "Symbols / Tag declaration" parameter group ............................................................................ 57
3.3.10 "DNS configuration" parameter group......................................................................................... 58
3.3.11 "FTP" parameter group ............................................................................................................... 58
3.3.12 Parameter group "SNMP" ........................................................................................................... 61
3.3.13 "Port parameters" parameter group ............................................................................................ 61
3.3.14 "PROFINET" parameter group.................................................................................................... 63
3.3.15 "Security" parameter group (STEP 7 V5.5)................................................................................. 63
3.3.16 "Web" parameter group............................................................................................................... 64
3.4 Sending entries for the IP access protection to the Advanced CP using HTTP/HTTPS ............ 66
3.5 Media redundancy....................................................................................................................... 70
3.5.1 Media redundancy in ring topologies .......................................................................................... 70
3.5.2 MRP ............................................................................................................................................ 72
3.5.3 MRP configuration....................................................................................................................... 74
3.6 Assigning addresses the first time .............................................................................................. 76
3.6.1 Addressing by selecting the target system ................................................................................. 78
3.6.2 Addressing by adopting the configured address parameters ..................................................... 78
3.7 Downloading the configuration data to the target system........................................................... 79
4 SEND/RECEIVE interface in the user program...................................................................................... 83
4.1 How the SEND/RECEIVE interface works on the CPU .............................................................. 83
4.2 Programming the SEND/RECEIVE interface.............................................................................. 85
4.3 Data exchange S7 CPU − Ethernet CP ...................................................................................... 87
4.4 Additional information.................................................................................................................. 88
4.4.1 Programming data transfer via TCP connections ....................................................................... 88
4.4.2 Recommendations for use with a high communications load..................................................... 89
5 Configuring communications connections.............................................................................................. 91
5.1 Procedure and connection properties ......................................................................................... 92
5.2 Connections to partners in other projects ................................................................................... 94
5.3 Inconsistent connections - connections without assignment ...................................................... 96
5.4 Configuring ISO transport connection properties........................................................................ 99
5.4.1 Specifying ISO transport addresses ........................................................................................... 99
5.4.2 Specifying ISO transport dynamics properties.......................................................................... 100
5.5 Configuring ISO-on-TCP connection properties ....................................................................... 101
5.5.1 Specifying ISO-on-TCP addresses ........................................................................................... 101
5.6 Configuring TCP connection properties .................................................................................... 103
5.6.1 Specifying TCP addresses........................................................................................................ 103
5.7 Configuring UDP connection properties.................................................................................... 105
5.7.1 Specifying UDP addresses ....................................................................................................... 105

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Configuration Manual, 09/2013, C79000-G8976-C182-13 9
5.7.2 UDP with broadcast and multicast .............................................................................................107
5.7.3 Free UDP connection.................................................................................................................110
5.8 FETCH/WRITE mode ................................................................................................................111
6 CP as PROFINET IO controller ........................................................................................................... 115
6.1 Project engineering ....................................................................................................................115
6.1.1 PROFINET IO system in STEP 7 ..............................................................................................115
6.1.2 PROFINET IO with IRT communication (STEP 7 V5.5) ............................................................116
6.2 IO controller mode with S7-300 .................................................................................................117
6.2.1 Programming..............................................................................................................................117
6.2.2 Reading and writing data records with program block PNIO_RW_REC....................................118
6.2.3 Alarm evaluation with program block PNIO_Alarm....................................................................118
6.3 IO controller mode with S7-400 .................................................................................................119
6.3.1 Multicomputing mode - assigning the CP to the CPU (STEP 7 V5.5) .......................................119
6.3.2 Programming..............................................................................................................................119
6.4 Further information on operation with PROFINET IO ................................................................120
6.4.1 Effects of multicast communication on RT communication .......................................................120
7 Intelligent PROFINET IO device with S7-300 CP................................................................................. 121
7.1 Principle of data exchange in IO device mode ..........................................................................122
7.2 Configuration (STEP 7 V5.5) .....................................................................................................123
7.2.1 Principle of IO device coupling...................................................................................................123
7.2.2 Enabling the CPU as a PROFINET IO device in the S7 station ................................................124
7.2.3 Configuring the CP as an IO device with IRT communication...................................................124
7.2.4 Assigning a PROFINET IO device to a PROFINET I/O system ................................................125
7.3 Configuration (STEP 7 Professional).........................................................................................128
7.4 Programming..............................................................................................................................128
7.4.1 Interface for programming on the PROFINET IO device...........................................................129
7.4.2 Initialization and configuration....................................................................................................129
7.5 Shared device ............................................................................................................................131
7.6 Example of configuration and programming ..............................................................................131
8 Sending process messages by email .................................................................................................. 135
8.1 Overview of the functions...........................................................................................................135
8.1.1 Authentication and other features of the Advanced CP.............................................................136
8.2 Project engineering ....................................................................................................................138
8.2.1 Options of mail server mode ......................................................................................................138
8.2.2 Configuring a mail server and addressing recipients.................................................................138
8.3 Setting up an e-mail connection.................................................................................................139
8.4 Sending an e-mail ......................................................................................................................141
8.5 Testing the email function ..........................................................................................................143
9 File management and file access with FTP/FTPS................................................................................ 145
9.1 FTP functions in an S7 station with the Advanced CP ..............................................................145
9.2 Advanced CP as FTP server for the file system on the CP.......................................................147

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Configuring and commissioning S7 CPs for Industrial Ethernet
10 Configuration Manual, 09/2013, C79000-G8976-C182-13
9.2.1 Procedure.................................................................................................................................. 147
9.2.2 File system - structure and features.......................................................................................... 148
9.3 Advanced CP as FTP server for the S7 CPU data ................................................................... 150
9.3.1 Procedure.................................................................................................................................. 150
9.3.2 FTP commands on the FTP client ............................................................................................ 151
9.3.3 File allocation table ................................................................................................................... 153
9.4 The Advanced CP as FTP client for S7 CPU data ................................................................... 157
9.4.1 Procedure.................................................................................................................................. 157
9.4.2 Setting up FTP connections ...................................................................................................... 159
9.5 Program blocks for FTP services.............................................................................................. 160
10 S7-CP Advanced as Web server: HTML process control ......................................................................161
10.1 Overview of HTML process control........................................................................................... 161
10.2 Security when accessing process data..................................................................................... 162
10.2.1 Opening ports on the Advanced CP during configuration......................................................... 163
10.2.2 Operation with firewall and proxy server................................................................................... 163
10.2.3 Scaled password protection with security ................................................................................. 164
10.3 Accessing the Advanced CP via a Web browser...................................................................... 165
11 Web diagnostics ..................................................................................................................................167
11.1 Requirements............................................................................................................................ 167
11.2 Setup and operation.................................................................................................................. 169
11.3 Diagnostics pages of the CP..................................................................................................... 172
11.3.1 Start page.................................................................................................................................. 172
11.3.2 Identification .............................................................................................................................. 174
11.3.3 Diagnostics buffer ..................................................................................................................... 174
11.3.4 Module status / rack configuration ............................................................................................ 175
11.3.5 Industrial Ethernet ..................................................................................................................... 179
11.3.6 SEND/RECEIVE communication / configured connections...................................................... 181
11.3.7 S7 communication..................................................................................................................... 183
11.3.8 Media redundancy..................................................................................................................... 185
11.3.9 IP access protection.................................................................................................................. 185
11.3.10 Security ..................................................................................................................................... 187
11.3.11 Topology.................................................................................................................................... 187
11.3.11.1 Topology - "Graphic view" tab.............................................................................................. 189
11.3.11.2 Topology - "Table view" tab ................................................................................................. 192
11.3.11.3 Topology - "Status overview" tab......................................................................................... 194
11.3.12 Update center............................................................................................................................ 194
11.3.12.1 Update center - "Firmware" tab............................................................................................ 194
11.3.12.2 Update center - "IP access control list" tab.......................................................................... 195
11.3.12.3 Update center - "Diagnostics messages" tab ...................................................................... 196
12 STEP 7 special diagnostics..................................................................................................................199
12.1 Overview ................................................................................................................................... 199
12.2 Functions................................................................................................................................... 200
12.2.1 Installation and startup .............................................................................................................. 200
12.2.2 Setup and operation.................................................................................................................. 201
12.2.3 Menu commands....................................................................................................................... 202

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12.3 Starting diagnostics....................................................................................................................204
12.3.1 Online path: Establishing a connection to the CP......................................................................204
12.3.2 Use as PC station - setting the gateway for "PC internal" .........................................................209
12.3.3 Other ways of starting diagnostics (STEP 7 V5.5).....................................................................210
12.4 How to use diagnostics ..............................................................................................................211
12.5 Starting diagnostics functions explicitly .....................................................................................212
12.6 Checklist for "typical problems" in a system ..............................................................................213
12.6.1 Checklist for general CP functions.............................................................................................214
12.6.2 Communications connection checklist.......................................................................................214
12.7 Diagnostics messages from e-mail connections with authentication.........................................215
13 Downloading firmware......................................................................................................................... 217
13.1 Loading using the Firmware Loader ..........................................................................................217
13.2 Loading from the Download Center ...........................................................................................219
A Connector pinout................................................................................................................................. 223
A.1 24 VDC connector......................................................................................................................223
A.2 RJ-45 jack for twisted pair Ethernet ...........................................................................................223
A.3 Connector for Industrial Ethernet ...............................................................................................224
A.4 Connector for PROFIBUS..........................................................................................................225
B References ......................................................................................................................................... 227
C Linking to other systems with FETCH/WRITE...................................................................................... 237
D Document history ................................................................................................................................ 241
Index................................................................................................................................................... 243

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Configuring and commissioning S7 CPs for Industrial Ethernet
12 Configuration Manual, 09/2013, C79000-G8976-C182-13

Configuring and commissioning S7 CPs for Industrial Ethernet
Configuration Manual, 09/2013, C79000-G8976-C182-13 13
Communication via Ethernet CPs in S7 stations
1
The Ethernet CP for SIMATIC S7 provides a series of communications services for different
tasks.
This section explains the following topics:
●The types of communication possible with the Ethernet CP on Industrial Ethernet
●The tasks handled by the Ethernet CP for the various services
●How to create the conditions for your communications requirements
There, you will find further information:
●When installing the Ethernet CP, follow the instructions in the device manual of the
relevant Ethernet CP. This also contains further information about the performance of the
Ethernet CP. /1/ (Page 227)
●For the functions and use of the STEP 7 configuration software, some of which are used
to configure the CP (such as hardware configuration), refer to /5/ (Page 229).
●For using, structuring and handling Industrial Ethernet, you will find detailed information in
/23/ (Page 234).
1.1
Industrial Ethernet
Industrial Ethernet
Industrial Ethernet is the network for the process control level and the cell level of the
vendor-independent SIMATIC NET open communications system. Physically, Industrial
Ethernet is an electrical network based on shielded, coaxial cable, twisted pair cable or an
optical network of fiber-optic cables (FO cable).
Industrial Ethernet is defined by the international standard IEEE 802.3 (see /10/).

Communication via Ethernet CPs in S7 stations
1.2 Industrial Ethernet Security
Configuring and commissioning S7 CPs for Industrial Ethernet
14 Configuration Manual, 09/2013, C79000-G8976-C182-13
Allround communication in the industrial sector
Industrial Ethernet is integrated in the SIMATIC NET concept that allows comprehensive
networking of the management, cell and field levels along with PROFINET / PROFIBUS and
the ASInterface (ASi).
Network access
Industrial Ethernet is accessed using the CSMA/CD (Carrier Sense Multiple Access with
Collision Detection) network access technique specified in IEEE 802.3.
1.2
Industrial Ethernet Security
Cell protection concept with Industrial Ethernet Security
With Industrial Ethernet Security, individual devices, automation cells or network segments
of an Ethernet network can be protected. In addition to this, data transmission can be
protected by a combination of different security measures such as a firewall, NAT/NAPT
routers and VPN (Virtual Private Network) via an IPsec Tunnel:
●Data espionage
●Data manipulation
●Unauthorized access
The security functions of the security CPs are configured with the Security Configuration
Tool configuration tool integrated in STEP 7.

Communication via Ethernet CPs in S7 stations
1.2 Industrial Ethernet Security
Configuring and commissioning S7 CPs for Industrial Ethernet
Configuration Manual, 09/2013, C79000-G8976-C182-13 15
You will find detailed information on the topic of Industrial Ethernet Security and
configuration with the Security Configuration Tool in /16/ (Page 232).

Communication via Ethernet CPs in S7 stations
1.3 SIMATIC S7 communication options with Ethernet CPs
Configuring and commissioning S7 CPs for Industrial Ethernet
16 Configuration Manual, 09/2013, C79000-G8976-C182-13
1.3
SIMATIC S7 communication options with Ethernet CPs
1.3.1
Types of communication
The Ethernet CP for SIMATIC S7 supports the following types of communication depending
on the CP type:
Possible types of communication /
mechanisms
Interfaces / services / protocols
PG/OP communication
S7 communication
With the protocols
•ISO
•TCP/IP (RFC 1006)
Open communications services With the SEND / RECEIVE interface and the
protocols
•ISO transport
•ISOonTCP (TCP/IP with RFC 1006)
•TCP
•UDP
With FETCH / WRITE services and the protocols
•ISO transport
•ISO-on-TCP
•TCP
PROFINET IO and PROFINET CBA With the protocols
•TCP
•UDP
•RT (PROFINET IO and CBA)
•IRT (PROFINET IO)
•DCOM (PROFINET CBA)
HTML process control with Web browser With the protocols
•HTTP or HTTPS
File management and file access with FTP With the protocols
•FTP or FTPS 1)

Communication via Ethernet CPs in S7 stations
1.3 SIMATIC S7 communication options with Ethernet CPs
Configuring and commissioning S7 CPs for Industrial Ethernet
Configuration Manual, 09/2013, C79000-G8976-C182-13 17
Possible types of communication /
mechanisms
Interfaces / services / protocols
Email communication With the protocols
•SMTP / ESMTP
Security functionality •Firewall
•VPN
•SNMPv3
•Syslog
•NAT / NAPT
•NTP (secured)
1) Where the term "FTPS" is used in this documentation, FTPS in the explicit mode is meant
(PTPES).
Types of communication
●
PG/OP communication
PG/OP communication is used to download programs and configuration data, to run tests
and diagnostics functions, and to control and monitor a plant from OPs.
●
S7 communication
S7 communication forms a simple and efficient interface between SIMATIC S7 stations
and PGs/PCs using communication function blocks.
●
Open communications services (SEND/ RECEIVE)
Depending on the CP type, the SEND/RECEIVE interface allows programcontrolled
communication on a configured connection from a SIMATIC S7 PLC to another SIMATIC
S7 PLC, to a SIMATIC S5 PLC, to PCs/PGs, and to third-party stations.
Depending on the CP type, the following communications services are available on the
SEND/RECEIVE interface:
–ISO transport
Optimized for top performance at the selfcontained manufacturing level.
–IP-based services for internetwork communication
This includes:
ISOonTCP connections (RFC 1006), TCP connections and UDP datagram service
(including broadcast / multicast).

Communication via Ethernet CPs in S7 stations
1.3 SIMATIC S7 communication options with Ethernet CPs
Configuring and commissioning S7 CPs for Industrial Ethernet
18 Configuration Manual, 09/2013, C79000-G8976-C182-13
●
FETCH/WRITE services (server)
The FETCH/WRITE services (server) allow direct access to the system memory areas on
the SIMATIC S7 CPU from SIMATIC S5, SIMATIC PC stations, or from third-party
devices.
Depending on the CP type, the following communications services are available for
FETCH/WRITE access:
–ISO transport
Optimized for top performance at the selfcontained manufacturing level.
–TCP/IP for internetwork communication with ISOonTCP connections (RFC 1006), TCP
connections.
●
PROFINET IO
PROFINET is a standard of the PROFIBUS Users organization defining a vendor-
independent communications and engineering model.
–PROFINET IO controller
The S7CPs that support the PROFINET IO controller mode allow direct access to IO
devices over Industrial Ethernet.
–PROFINET IO device
With the S7CPs that support the PROFINET IO device mode, you can operate S7
stations as "intelligent" PROFINET IO devices on Industrial Ethernet.
Additional information: see References for PROFINET IO (Page 233).
For PROFINET IO communication, UDP is used to assign parameters and RT (real time)
or IRT (isochronous real time) for cyclic IO data traffic.
●
PROFINET CBA
–PROFINET CBA
An S7 station equipped with a CP capable of PROFINET CBA can be interconnected
as a PROFINET CBA component in SIMATIC iMap.
Additional information: see References for PROFINET CBA (Page 230)
In PROFINET CBA, interconnections are used with acyclic and cyclic transmission.
●
HTML process control / Web diagnostics
Supplied functions and HTML pages allow you to query important system data using a
Web browser.

Communication via Ethernet CPs in S7 stations
1.3 SIMATIC S7 communication options with Ethernet CPs
Configuring and commissioning S7 CPs for Industrial Ethernet
Configuration Manual, 09/2013, C79000-G8976-C182-13 19
●
File management and file access with FTP
The CPs with IT functionality provide additional functions for FTP services.
You can use your S7 station both as an FTP client and address it in FTP server mode.
–S7 station as FTP client
You can transfer data blocks from or to a file server.
–S7 station as FTP server
Another station, for example, a PC writes or reads data blocks on the S7 station or
files in the file system on the CP with IT functionality.
●
Email communication
CPs with IT functions provide Email services.
This allows the controller to send messages dependent on process events.
Security functionality
●
Firewall
–IP firewall with stateful packet inspection (layer 3 and 4)
–Firewall also for Ethernet "non-IP" frames according to IEEE 802.3 (layer 2)
–Bandwidth limitation
–Global firewall rules
–All network nodes located in the internal network segment of a CP are protected by its
firewall.
●
Communication made secure by IPsec tunnels
The CP x43-1 Adv. can be grouped together with other security modules during
configuration. IPsec tunnels are created between all security modules of a group (VPN).
All internal nodes of these security modules can communicate securely with each other
through these tunnels.
●
SNMPv3
For secure transmission of network analysis information safe from eavesdropping.
●
Logging via the Syslog server
To allow monitoring, events can be stored in log files that can be read out using the
configuration tool or can be sent automatically to a syslog server.
●
HTML process control using HTTPS
For encrypted transmission of system data via a Web browser.
●
File management and file access using FTP (explicit mode)
For encrypted transfer of files.
●
Time-of-day synchronization and transfer using NTP (secure)
For secure time-of-day synchronization and transmission.

Communication via Ethernet CPs in S7 stations
1.3 SIMATIC S7 communication options with Ethernet CPs
Configuring and commissioning S7 CPs for Industrial Ethernet
20 Configuration Manual, 09/2013, C79000-G8976-C182-13
1.3.2
The communications services of the Ethernet CPs
Depending on the module type, the S7 CPs support the following communications options:
Automation system
supported communications services / functions
Module
PG/OP
S7
Open
PROFINET
CBA
PROFINET
IO
IT
Security
S7/C7-300 CP 343-1
Lean
●● 4) ●○● 1) ○○
CP 343-1
●
●
●
● 6)
● 3)
○
○
CP 343-1
Advanced
●●●● 6) ● 5) ●●
S7-400/
S7-400H
CP 443-1
●
●
●
○
● 2)
○
○
CP 443-1
Advanced
●●●●● 2) ●●
Legend: ● = is supported; ○ = is not supported
1) PROFINET IO device
2) PROFINET IO controller
3) PROFINET IO device or PROFINET IO controller
4) only server
5) PROFINET IO device and/or PROFINET IO controller
6) dependent on device type: For example, EX21 with CBA, EX30 without CBA
Possibilities for communication between device types
The possible communication available with the types of communication listed above is
shown in the following table:
S7-300
S7-400
S5-115 - 155U/H
PC station
ET 200
S7-300
S7 communication
SEND/ RECEIVE
PROFINET CBA
PROFINET IO 3)
FTP services
S7 communication
SEND/ RECEIVE
PROFINET CBA
PROFINET IO 3)
FTP services
SEND/ RECEIVE
FETCH/WRITE
PG/OP communication
1)
S7 communication 1)
SEND/ RECEIVE
FETCH/WRITE
PROFINET CBA
PROFINET IO
HTML process control
FTP services
E-mail
S7 communication
PROFINET IO
S7-400
S7 communication
SEND/ RECEIVE
PROFINET CBA
PROFINET IO 2)
FTP services
S7 communication
SEND/ RECEIVE
PROFINET CBA
PROFINET IO
FTP services
1) PC only as client
2) S7
300 as PROFINET IO device or controller
S7-400 as a PROFINET IO controller
3) S7300 as PROFINET IO device and/or controller