Siemens SIMATIC ET 200SP User manual

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SIMATIC NET
ET 200SP - Industrial Ethernet
CP 1542SP-1, CP 1542SP-1 IRC,
CP 1543SP-1
Operating Instructions
01/2017
C79000
-G8976-C426-03
Preface
Application and functions
1
LEDs and connectors
2
Installation and connecting
up
3
Configuration and operation
4
Programming (OUC)
5
Diagnostics and
maintenance
6
Technical specifications
7
Approvals
A
Dimension drawings
B
Accessories
C
Documentation references
D

Siemens AG
Division Process Industries and Drives
Postfach 48 48
90026 NÜRNBERG
GERMANY
C79000-G8976-C426-02
Ⓟ
01/2017 Subject to change
Copyright © Siemens AG 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.

CP 1542SP-1, CP 1542SP-1 IRC, CP 1543SP-1
Operating Instructions, 01/2017, C79000-G8976-C426-03 3
Preface
Validity of this manual
This document contains information on the following modules:
●
CP 1542SP-1
Article number
6GK7542-6UX00-0XE0
Hardware version 1
Firmware version V1.0
Communications processor for connecting a SIMATIC ET 200SP CPU to Industrial
Ethernet
●
CP 1542SP-1 IRC
Article number
6GK7542-6VX00-0XE0
Hardware version 1
Firmware version V1.0
Communications processor for connecting a SIMATIC ET 200SP CPU via Industrial
Ethernet to a control room (TCSB, DNP3, IEC 60870-5-104)
●
CP 1543SP-1
Article number
6GK7543-6WX00-0XE0
Hardware version 1
Firmware version V1.0
Communications processor for connecting a SIMATIC ET 200SP CPU to Industrial
Ethernet, Security
Figure 1 CP 1542SP-1 with plugged in bus adapter (here 2xRJ-45)
On the front of the module at the right edge, the hardware version is printed as a placeholder
"X". If the printed text is, for example, "X 2 3 4", "X" would be the placeholder for hardware
product version 1.

Preface
CP 1542SP-1, CP 1542SP-1 IRC, CP 1543SP-1
4Operating Instructions, 01/2017, C79000-G8976-C426-03
Directly below, you will find the firmware version of the CP as it shipped.
The MAV address is printed on the front at the bottom left, above the connectors for the
power supply.
Product names, terms and abbreviations/acronyms
Below you will find terms and abbreviations/acronyms used often in this manual.
●
CP
When the property being described is valid in the current context for all three CP types or
if the CP type being used is clear from the context, the abbreviation "CP" will be used
instead of the three following product designations
–CP 1542SP-1
–CP 1542SP-1 IRC
–CP 1543SP-1
If information applies only to a certain product variant. the full module name is specified.
●
TCSB
Control center software "TeleControl Server Basic"
●
Telecontrol server
PC with installed software "TeleControl Server Basic"
Purpose of the manual
This manual describes the properties of this module and supports you when installing and
commissioning it.
The required configuration steps are described as an overview and there are explanations of
the relationship between firmware functions and configuration.
You will also find information about the diagnostics options of the device.
Required experience
To install, commission and operate the CP, you require experience in the following areas:
●Automation engineering
●Setting up the SIMATIC ET 200SP
●SIMATIC STEP 7 Professional
New in this issue
Editorial revision (MSIP approval)
Replaced edition
Release 11/2016

Preface
CP 1542SP-1, CP 1542SP-1 IRC, CP 1543SP-1
Operating Instructions, 01/2017, C79000-G8976-C426-03 5
Current manual release on the Internet
You will also find the current version of this manual on the Internet pages of Siemens
Industry Online Support under at the following addresses:
●CP 1542SP-1 / CP 1543SP-1
Link: (https://support.industry.siemens.com/cs/ww/en/ps/22144/man)
●CP 1542SP-1 IRC
Link: (https://support.industry.siemens.com/cs/ww/en/ps/22143/man)
Cross references
In this manual there are often cross references to other sections.
To be able to return to the initial page after jumping to a cross reference, some PDF readers
support the command <Alt>+<Left arrow>.
Sources of information and other documentation
You will find an overview of further reading and references in the Appendix of this manual.
License conditions
Note
Open source software
Read the license condit
ions for open source software carefully before using the product.
You will find license conditions in the following document on the supplied data medium:
●OSS_CP-ET200SP_86.pdf
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
Link: (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

Preface
CP 1542SP-1, CP 1542SP-1 IRC, CP 1543SP-1
6Operating Instructions, 01/2017, C79000-G8976-C426-03
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
Link: (http://www.siemens.com/industrialsecurity).
Firmware
The firmware is signed and encrypted. This ensures that only firmware created by Siemens
can be downloaded to the device.
SIMATIC NET glossary
Explanations of many 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 or product DVD
The DVD ships with certain SIMATIC NET products.
●On the Internet under the following address:
Link: (https://support.industry.siemens.com/cs/ww/en/view/50305045)
Training, Service & Support
You will find information on training, service and support in the multilanguage document
"DC_support_99.pdf" on the Internet pages of Siemens Industry Online Support:
Link: (https://support.industry.siemens.com/cs/ww/en/view/38652101)

CP 1542SP-1, CP 1542SP-1 IRC, CP 1543SP-1
Operating Instructions, 01/2017, C79000-G8976-C426-03 7
Table of contents
Preface ................................................................................................................................................... 3
1 Application and functions ...................................................................................................................... 11
1.1 Components of the product ....................................................................................................11
1.2 Application ..............................................................................................................................11
1.3 Communications services .......................................................................................................12
1.4 Telecontrol communication of the CP 1542SP-1 IRC ............................................................13
1.5 Other services and properties.................................................................................................14
1.6 Security functions (CP 1542SP-1 IRC, CP 1543SP-1)...........................................................15
1.7 Configuration limits and performance data.............................................................................17
1.8 Requirements for use..............................................................................................................19
1.8.1 Hardware requirements ..........................................................................................................19
1.8.2 Software requirements............................................................................................................20
1.9 Configuration examples ..........................................................................................................20
2 LEDs and connectors............................................................................................................................ 25
2.1 LEDs .......................................................................................................................................25
2.2 Power supply ..........................................................................................................................26
2.3 Connector for the BusAdapter ................................................................................................27
3 Installation and connecting up ............................................................................................................... 29
3.1 Important notes on using the device.......................................................................................29
3.1.1 Notes on use in hazardous areas ...........................................................................................29
3.1.2 Notes on use in hazardous areas according to ATEX / IECEx ..............................................31
3.1.3 Notes on use in hazardous areas according to UL HazLoc ...................................................31
3.1.4 General notices on use in hazardous areas according to FM ................................................32
3.2 Installing the CP......................................................................................................................32
3.3 Connecting the CP..................................................................................................................36
4 Configuration and operation .................................................................................................................. 39
4.1 Security recommendations .....................................................................................................39
4.2 Configuration in STEP 7 .........................................................................................................42
4.3 Ethernet interface....................................................................................................................43
4.3.1 IPv6 .........................................................................................................................................43
4.3.2 Time-of-day synchronization...................................................................................................43
4.4 SNMP......................................................................................................................................45
4.5 Telecontrol communication (CP 1542SP-1 IRC) ....................................................................45
4.5.1 Configuration...........................................................................................................................45

Table of contents
CP 1542SP-1, CP 1542SP-1 IRC, CP 1543SP-1
8Operating Instructions, 01/2017, C79000-G8976-C426-03
4.5.2 Communication types ............................................................................................................ 46
4.5.3 Address and authentication information ................................................................................ 47
4.5.4 Ethernet interface (X1) > Advanced options.......................................................................... 48
4.5.5 Partner stations ...................................................................................................................... 52
4.5.5.1 Partner configuration.............................................................................................................. 52
4.5.5.2 Addressing of single and redundant communications partners............................................. 55
4.5.5.3 Partner for inter-station communication................................................................................. 55
4.5.6 Communication with the CPU ................................................................................................ 56
4.5.7 Data point configuration ......................................................................................................... 57
4.5.7.1 Configuring the data points .................................................................................................... 57
4.5.7.2 Datapoint types ...................................................................................................................... 59
4.5.7.3 Process image, types of transmission, event classes, triggers ............................................. 63
4.5.7.4 Status IDs of the data points.................................................................................................. 67
4.5.7.5 Rules for configuring the data point index: ............................................................................ 69
4.5.7.6 Read cycle ............................................................................................................................. 70
4.5.7.7 "Trigger“ tab ........................................................................................................................... 71
4.5.7.8 Threshold value trigger .......................................................................................................... 73
4.5.7.9 Analog value preprocessing................................................................................................... 74
4.5.8 Message configuration........................................................................................................... 81
4.5.9 Security > CP identification.................................................................................................... 83
4.5.10 Security > DNP3 security options .......................................................................................... 83
4.5.11 Security > E-mail configuration .............................................................................................. 86
4.6 Security configuration(CP 1543SP-1) .................................................................................... 86
4.6.1 VPN........................................................................................................................................ 86
4.6.1.1 VPN (Virtual Private Network)................................................................................................ 86
4.6.1.2 Creating a VPN tunnel for S7 communication between stations ........................................... 88
4.6.1.3 VPN communication with SOFTNET Security Client (engineering station)........................... 90
4.6.1.4 Establishment of VPN tunnel communication between the CP and SCALANCE M ............. 90
4.6.1.5 CP as passive subscriber of VPN connections...................................................................... 90
4.6.2 Firewall................................................................................................................................... 91
4.6.2.1 Pre-check of messages by the MAC firewall. ........................................................................ 91
4.6.2.2 Online diagnostics and downloading to station with the firewall activated ............................ 91
4.6.2.3 Notation for the source IP address (advanced firewall mode)............................................... 92
4.6.2.4 Firewall settings for S7 connections via a VPN tunnel .......................................................... 92
4.6.3 Filtering of the system events ................................................................................................ 92
4.7 Table "Certificate manager" (CP 1542SP-1 IRC, CP 1543SP-1) .......................................... 92
5 Programming (OUC) ............................................................................................................................. 95
5.1 Program blocks for OUC........................................................................................................ 95
6 Diagnostics and maintenance ............................................................................................................... 99
6.1 Diagnostics options ................................................................................................................ 99
6.2 Diagnostics with SNMP........................................................................................................ 100
6.3 Web server of the CPU ........................................................................................................ 102
6.4 Processing status of the telecontrol e-mails ........................................................................ 104
6.5 Downloading firmware ......................................................................................................... 106
6.6 Module replacement ............................................................................................................ 108
7 Technical specifications .......................................................................................................................109

Table of contents
CP 1542SP-1, CP 1542SP-1 IRC, CP 1543SP-1
Operating Instructions, 01/2017, C79000-G8976-C426-03 9
A Approvals............................................................................................................................................ 111
B Dimension drawings............................................................................................................................ 115
C Accessories ........................................................................................................................................ 117
C.1 BusAdapter ...........................................................................................................................117
C.2 Assignment of the Ethernet interface of the bus adapter .....................................................118
D Documentation references .................................................................................................................. 119
Index................................................................................................................................................... 121

Table of contents
CP 1542SP-1, CP 1542SP-1 IRC, CP 1543SP-1
10 Operating Instructions, 01/2017, C79000-G8976-C426-03

CP 1542SP-1, CP 1542SP-1 IRC, CP 1543SP-1
Operating Instructions, 01/2017, C79000-G8976-C426-03 11
Application and functions
1
1.1
Components of the product
The following components are supplied with the product:
●CP 154xSP-1
●Plug for the socket of the power supply (24VDC) of the CP
●DVD with documentation and license texts
A BusAdapter for the Ethernet connection of the CP does not ship with the product.
1.2
Application
Application of the CP variants
The CP is used to connect the ET 200SP to Industrial Ethernet via a copper cable or fiber-
optic cable. It can be used as an additional Ethernet interface of the CPU for S7
communication.
For the Ethernet connection, the CP requires a bus adapter that does not ship with the
product.
The three CP variants are intended for the following communication tasks:
●
CP 1542SP-1
The CP 1542SP-1 allows the ET 200SP a further Ethernet connection.
●
CP 1542SP-1 IRC
The CP 1542SP-1 IRC supports telecontrol communication for connecting the ET 200SP
CPU to a control center. The following telecontrol protocols can be used as alternatives:
–TeleControl Basic
For connection of the ET 200SP to a master station with telecontrol server
(TCSB V3 SP3)
–DNP3
For connection of the ET 200SP to a master station with DNP3 masters
–IEC 60870-5-104
For connection of the ET 200SP to a master station with IEC masters
●
CP 1543SP-1
The CP 1543SP-1 has Security functions for network security, such as a firewall and
VPN. This makes protected access to the ET 200SP possible.

Application and functions
1.3 Communications services
CP 1542SP-1, CP 1542SP-1 IRC, CP 1543SP-1
12 Operating Instructions, 01/2017, C79000-G8976-C426-03
1.3
Communications services
Communications services
The following communications services are supported:
●
S7 communication and PG/OP communication with the following functions:
–PUT/GET as client and server for data exchange with S7 stations
–PG functions
–Operator control and monitoring functions (HMI)
For S7 communication, the CP requires a fixed IP address.
●
S7 routing
–Routing of S7 connections via the backplane bus and the CPU to other S7 stations
●
Open User Communication (OUC)
OUC via program blocks with the following protocols:
–TCP/IP
–ISO-on-TCP
–UDP
The CP 1543SP-1 supports Secure OUC.
You will find the program blocks supported by the three CP types in the section
Programming (OUC) (Page 95).
●
E-mail using program blocks
●
HTTP / HTTPS
Via HTTP / HTTPS you can access the Web server of the CPU.
For telecontrol communication of the CP 1542SP-1 IRC, see section Telecontrol
communication of the CP 1542SP-1 IRC (Page 13).
For information on the Security functions of the CP 1543SP-1, refer to the section Security
functions (CP 1542SP-1 IRC, CP 1543SP-1) (Page 15).

Application and functions
1.4 Telecontrol communication of the CP 1542SP-1 IRC
CP 1542SP-1, CP 1542SP-1 IRC, CP 1543SP-1
Operating Instructions, 01/2017, C79000-G8976-C426-03 13
1.4
Telecontrol communication of the CP 1542SP-1 IRC
Telecontrol protocols
In addition to the communications services named above, the CP 1542SP-1 IRC supports
the following telecontrol protocols for communication with a master station:
●
TeleControl Basic
This is a proprietary protocol of Siemens for telecontrol applications. The IP-based
protocol is used to connect the CP to the application TCSB.
TCSB is installed on a PC in the master station, the telecontrol server. Via the OPC-DA or
OPC-UA server of TCSB, an OPC client can access the process data of the CP.
TCSb is supported as of the following version: V3.0 + SP3
For the TCSB manual, see /3/ (Page 120).
●
DNP3
The CP functions as a DNP3 station (Outstation).
Communication is based on the DNP3 SPECIFICATION Version 2.11 (2007/2009).
You will find a detailed overview of the attributes and properties specified in the DNP3
protocol and supported by the CP in the DNP3 device profile, see Link:
(https://support.industry.siemens.com/cs/ww/en/ps/22143/man).
You will find the supported object groups and variations in the section Datapoint types
(Page 59).
Communications partner (DNP3) can be:
–SIMATIC PCS7 TeleControl
–SIMATIC WinCC TeleControl
–SIMATIC WinCC OA
–A TIM module with DNP3 capability (TIM 3V IE DNP3 / TIM 4R IE DNP3)
For the manual of the TIM module see /5/ (Page 120).
–Third-party systems that support the DNP3 specification named above.
●
IEC 60870-5-104
The CP functions as a substation (slave).
Communication is based on the specification IEC 60870-5 Part 104 (2006).
You will find a detailed overview of the attributes and properties specified in the IEC
specification and supported by the CP in the IEC device profile, see Link:
(https://support.industry.siemens.com/cs/ww/en/ps/22143/man).
You will find the supported IEC type identifiers as in the section Datapoint types
(Page 59).
Communications partner (IEC master) can be:
–SIMATIC PCS7 TeleControl
–SIMATIC WinCC TeleControl

Application and functions
1.5 Other services and properties
CP 1542SP-1, CP 1542SP-1 IRC, CP 1543SP-1
14 Operating Instructions, 01/2017, C79000-G8976-C426-03
–SIMATIC WinCC OA
–Third-party systems that support the DNP3 specification named above.
Properties of the telecontrol CP
●
Data point configuration
The process values are configured as data points for the communication. The data points
access PLC tags in the CPU. The data points can be processed one-to-one in the control
system.
●
Messages / e-mail
With configurable events in the process image of the CPU, the CP 1542SP-1 IRC can
send messages as e-mails. The data sent by e-mail is configured using PLC tags.
●
Storage of events
The CP 1542SP-1 IRC can store events of different classes and transfer them together to
the communications partner.
●
Analog value processing
Analog values can be preprocessed on the CP 1542SP-1 IRC according to various
methods.
1.5
Other services and properties
Further services and properties of the CP
●
IP configuration
–Address types
The CP supports IP addresses according to IPv4 and IPv6.
–Addressing
The IP address, the subnet mask and the address of a gateway can be set manually
in the configuration. As an alternative, the IP address can be obtained using program
blocks.
–DHCP: As an alternative, the IP address can be obtained from a DHCP server.
–DCP (Discovery and Configuration Protocol) is supported.
●
Time-of-day synchronization
–NTP
On the Ethernet interface, the CP can synchronize its time of day via NTP.

Application and functions
1.6 Security functions (CP 1542SP-1 IRC, CP 1543SP-1)
CP 1542SP-1, CP 1542SP-1 IRC, CP 1543SP-1
Operating Instructions, 01/2017, C79000-G8976-C426-03 15
–Only CP 1542SP-1 IRC
When telecontrol communication is enabled, the CP always obtains its local time of
day as UTC time from the communications partner. The time of day of the CP can be
read by the CPU using a PLC tag. For information on the format of the time stamp of
the data frames, refer to the section Datapoint types (Page 59).
If telecontrol communication is disabled, the CP can synchronize its time of day via
NTP.
–Only CP 1543SP-1
If the Security functions are enabled, the secure method NTP (secure) can be used.
For more information, refer to the section Time-of-day synchronization (Page 43).
●
SNMP
As SNMP agent, the CP supports queries via SNMPv1.
The CP 1543SP-1 also supports SNMPv3.
For more detailed information, refer to section SNMP (Page 45).
1.6
Security functions (CP 1542SP-1 IRC, CP 1543SP-1)
The Security functions described below are enabled in the configuration for the relevant CP.
For information on the Securityfunctions of Open User Communication, refer to the section
Programming (OUC) (Page 95).
Note
Recommendation for critical security plants
Refer to the information in the section
Security recommendations (Page 39).
Security functions of the CP 1542SP-1 IRC
●
E-mail
For secure transfer of information with encrypted e-mails you have the alternative of
using:
–SSL/TLS
–STARTTLS
For information on the configuration, refer to the section Security > E-mail configuration
(Page 86).
●
Certificates
For the secure authentication of the communications partners, certificates are used.

Application and functions
1.6 Security functions (CP 1542SP-1 IRC, CP 1543SP-1)
CP 1542SP-1, CP 1542SP-1 IRC, CP 1543SP-1
16 Operating Instructions, 01/2017, C79000-G8976-C426-03
●
Secure telecontrol communication
The telecontrol protocols provide the following Security functions:
–TeleControl Basic
As an integrated security function, the telecontrol protocol encrypts the data for
transfer between the CP and telecontrol server. The interval for the key exchange
between CP and telecontrol server is set to 1 hour.
The telecontrol password is used to authenticate the CP with the telecontrol server
–DNP3
The CP supports the Security mechanisms listed in the specification.
Security functions of the CP 1543SP-1
With Industrial Ethernet Security, individual devices, automation cells or network segments
of an Ethernet network can be protected. The data transfer via the CP 1543SP-1 can be
protected from the following attacks by a combination of different security measures:
●Data espionage
●Data manipulation
●Unauthorized access
Secure underlying networks can be operated via additional Ethernet/PROFINET interfaces of
the CPU.
As a result of using the CP, as a security module, the following security functions are
accessible to the ET 200SP station on the interface to the Ethernet network:
●
Firewall
The firewall protects the device with:
–IP firewall with stateful packet inspection (layer 3 and 4)
–Firewall also for "non-IP" Ethernet frames according to IEEE 802.3 (layer 2)
–Limitation of the transmission speed ("Bandwidth limitation")
●
Certificates
For the secure authentication of the communications partners, certificates are used.
●
Communication made secure by IPsec tunnels (VPN)
VPN tunnel communication allows the establishment of secure IPsec tunnels for
communication with one or more security modules. The CP can be put together with
other modules to form VPN groups during configuration. IPsec tunnels (VPN) are created
between all security modules of a VPN group.
●
Logging
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.
●
NTP (secure)
For secure transfer during time-of-day synchronization

Application and functions
1.7 Configuration limits and performance data
CP 1542SP-1, CP 1542SP-1 IRC, CP 1543SP-1
Operating Instructions, 01/2017, C79000-G8976-C426-03 17
●
SNMPv3
For secure transmission of network analysis information safe from eavesdropping
For information on configuring the security functions, refer to the section Security
configuration(CP 1543SP-1) (Page 86).
You will find further information on the functionality and configuration of the security functions
in the information system of STEP 7 and in the manual /4/ (Page 120).
1.7
Configuration limits and performance data
Number of CPs per station
In each ET 200SP station, up to three special modules can be plugged in and configured;
this allows a maximum of two CP 154xSP-1 modules.
For details of the permitted special modules and the slot rules, refer to section Installing the
CP (Page 32).
Connection resources
Number of connections via Industrial Ethernet in total maximum of 32,
of which:
●S7: Max. 16
●TCP/IP: Max. 32
●ISO-on-TCP: Max. 32
●UDP: Max. 32
Also:
●Online connections of the engineering station (STEP 7): Max. 2
●TCP connections for HTTP
For HTTP access upp to 12 TCP connection resources are available that are used by one
or more Web browsers to display data of the CP.
●PG/OP connections (HMI): In total maximum of 16,
of which:
–Connection resources for PG connections: Max. 16
–Connection resources for OP connections: Max. 16
Frame memory (send buffer)
Only CP 1542SP-1 IRC
The CP has a frame memory (send buffer) for the values of data points configured as an
event.
The volume of the send buffer is divided equally among all configured communications
partners.

Application and functions
1.7 Configuration limits and performance data
CP 1542SP-1, CP 1542SP-1 IRC, CP 1543SP-1
18 Operating Instructions, 01/2017, C79000-G8976-C426-03
The size of the send buffer can be configured in STEP 7, refer to the section Communication
with the CPU (Page 56).
The maximum size of the send buffer depends on the telecontrol protocol being used and is
as follows:
●TeleControl Basic
64000 events
●DNP3
100000 events
●IEC 60870-5-104
100000 events
You will find details of how the send buffer works such as storing events as well as the
options for transferring the data in the section Process image, types of transmission, event
classes, triggers (Page 63).
E-mail (via message editor)
Only CP 1542SP-1 IRC
With telecontrol communication enabled, up to 10 messages can be configured in STEP 7.
The messages are sent as e-mails.
Telecontrol connections and data points
Only CP 1542SP-1 IRC
●
Telecontrol connections
–TeleControl Basic
A connection can be established to a single or redundant telecontrol server.
–DNP3
Connections to up to four masters can be established.
–IEC 60870-5-104
Connections to up to four masters can be established.
●
Data points
The data to be transferred by the CP is assigned to various data points in the STEP 7
configuration. The size of the user data per data point depends on the data type of the
relevant data point. You will find details in the section Datapoint types (Page 59).
The maximum number of configurable data points is 500.
In the allocation of the internal CP memory for data points, the length of the data point
name is also included. See also the note in section Configuring the data points (Page 57).

Application and functions
1.8 Requirements for use
CP 1542SP-1, CP 1542SP-1 IRC, CP 1543SP-1
Operating Instructions, 01/2017, C79000-G8976-C426-03 19
Security functions
Only CP 1543SP-1
●
VPN tunnel
A maximum of four VPN tunnels can be established for secure communication with other
Security modules.
●
Firewall rules
The maximum number of firewall rules in advanced firewall mode is limited to 256. The
firewall rules are divided up as follows:
–Maximum 226 rules with individual addresses
–Maximum 30 rules with address ranges or network addresses
(e.g. 140.90.120.1 - 140.90.120.20 or 140.90.120.0/16)
–Maximum 128 rules with limitation of the transmission speed ("Bandwidth limitation")
1.8
Requirements for use
1.8.1
Hardware requirements
Bus adapter
To connect to the Ethernet network, the CP requires a BusAdapter. A BusAdapter does not
ship with the CP.
The CP supports the following BusAdapter:
●BA 2xRJ45
●BA 2xFC
●BA 2xSCRJ
●BA SCRJ/RJ45
●BA SCRJ/FC
For more detailed information on the bus adapters, refer to the section BusAdapter
(Page 117) and the manual /2/ (Page 119).
CPUs and other components of the ET 200SP
The CP supports operation in stations that contain one of the following CPUs:
●CPU 1510SP-1 PN
Article number: 6ES7510-1DJ01-0AB0
●CPU 1510SP F-1 PN
Article number: 6ES7510-1SJ01-0AB0
●CPU 1512SP-1 PN
Article number: 6ES7512-1DK01-0AB0

Application and functions
1.9 Configuration examples
CP 1542SP-1, CP 1542SP-1 IRC, CP 1543SP-1
20 Operating Instructions, 01/2017, C79000-G8976-C426-03
●CPU 1512SP F-1 PN
Article number: 6ES7512-1SK01-0AB0
Further parts and modules that are also required to set up the ET 200SP station, such as
rails, I/O modules or cabling are not listed here. See also /2/ (Page 119) for information on
this.
Components of the communications partner
Components required by the communications partners of the CP 1542SP-1 IRC are not
listed here. You will find references to other products (e.g. TCSB) in the list of references in
the appendix of the manual.
1.8.2
Software requirements
Configuration software
To configure the CP, the following configuration tool is required:
●STEP 7 Professional as of version 14.
Software for online functions
To use the online functions, the following software is required:
●STEP 7 in the version specified above
CPU firmware
To use the CP, a CPU 151xSP with a firmware version ≥ V2.0 is required.
Telecontrol protocols (CP 1542SP-1 IRC)
You will find telecontrol protocols supported by the CP in the section Telecontrol
communication of the CP 1542SP-1 IRC (Page 13).
1.9
Configuration examples
Below you will find configuration examples for the use of the three CP variants.
CP 1542SP-1 - Network separation
The CP is used in the ET 200SP to operate lower-level networks separately or to achieve
separation from the higher-level network.
The ET 200SP can be expanded flexibly with further Ethernet interfaces via the CP. The
network separation allows the setting up of identical machines with the same IP address.
The CP takes over the communication and relieves the CPU.