Siemens SIMATIC NET CP 1542-5 Technical Document

SIMATIC CP 1542-5
SIMATIC NET
S7-1500 - PROFIBUS
SIMATIC CP 1542
-5
Equipment Manual
CP 1542-5, firmware V2.0 (6GK7542-5FX00-0XE0)
CP 1542
-5, firmware V3.0 (6GK7542-5FX10-0XE0)
01/2023
C79000
-G8976-C326-05
Preface
Documentation
1
Product overview,
functions
2
Installation, wiring,
commissioning, operation,
disassembly
3
Configuration, program
blocks
4
Diagnostics and
maintenance
5
Technical specifications
6
Approvals
7
Dimension drawings
8

Siemens AG
Digital Industries
Postfach 48 48
90026 NÜRNBERG
GERMANY
C79000-G8976-C326-05
Ⓟ
01/2023 Subject to change
Copyright © Siemens AG 2013 - 2023.
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.

SIMATIC CP 1542-5
Equipment Manual, 01/2023, C79000-G8976-C326-05 3
Preface
Article number, validity and product names
This description contains information on the following product:
•CP 1542-5
Article number 6GK7 542-5FX00-0XE0
Hardware version 1
Firmware version V2.0.5
•CP 1542-5
Article number 6GK7 542-5FX10-0XE0
Hardware version 1
Firmware version V3.0
Communications processors for connecting SIMATIC S7-1500 to PROFIBUS DP
View of the CP
①
LEDs
②
Type plate
③
PROFIBUS interface: 1 x 9-pin D-sub female connector (RS-485)
Figure 1 View of the CP 1542-5 with closed (left) and open (right) front cover

Preface
SIMATIC CP 1542-5
4Equipment Manual, 01/2023, C79000-G8976-C326-05
Abbreviations and reference to the module version
•CP / module / device
These terms are used in the following instead of the complete product designation. In this
case, the information applies equally to both firmware versions or hardware product
versions of the module.
If the data of the two devices differs, the firmware version or the hardware version of the
respective device is explicitly stated.
•STEP 7
The name STEP 7 is used to mean the STEP 7 Professional configuration tool.
Purpose of the manual
This manual supplements the system manual of the S7-1500 automation system and the
function manuals. All functions that go beyond the system are described in the system
manual.
With the information in this manual and the system manual, you will be able to commission
the CP 1542-5.
New in this edition
•New module with new article number, see above.
•New firmware version improvements to the operating behavior
•New approvals: CCC / UKEX
•Editorial revision
Replaced edition
Edition 11/2018
Manual on DVD
You will find the manual on the DVD supplied with the product. This DVD contains the
product manuals valid at the time it is created.
Current manual edition on the Internet
You will also find the current version of this manual on the Internet pages of Siemens
Industry Online Support:
Link: (https://support.industry.siemens.com/cs/ww/en/ps/15672/man)
Sources of information and other documentation
See section Documentation (Page 9).

Preface
SIMATIC CP 1542-5
Equipment Manual, 01/2023, C79000-G8976-C326-05 5
License conditions
Note
Open source software
Read the license conditions for open source software carefully before using the product.
You will find license conditions in the following documents on the supplied data medium:
•OSS_CP15425_86.pdf
•OSS_CM15425_99.pdf
Firmware
The firmware is signed and encrypted. This ensures that only firmware created by Siemens
can be downloaded to the device.
Note on firmware/software support
Check regularly for new firmware/software versions or security updates and apply them. After
the release of a new version, previous versions are no longer supported and are not
maintained.
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 constitute one element of such a concept.
Customers are responsible for preventing unauthorized access to their plants, systems,
machines and networks. Such systems, machines and components should only be connected
to an enterprise network or the internet if and to the extent such a connection is necessary
and only when appropriate security measures (e.g. firewalls and/or network segmentation)
are in place.
For additional information on industrial security measures that may be implemented, please
visit
Link: (https://www.siemens.com/industrialsecurity)
Siemens’ products and solutions undergo continuous development to make them more
secure. Siemens strongly recommends that product updates are applied as soon as they are
available and that the latest product versions are used. Use of product versions that are no
longer supported, and failure to apply the latest updates may increase customers’ exposure to
cyber threats.
To stay informed about product updates, subscribe to the Siemens Industrial Security RSS
Feed under
Link: (https://www.siemens.com/cert)

Preface
SIMATIC CP 1542-5
6Equipment Manual, 01/2023, C79000-G8976-C326-05
Observe the following security recommendations to prevent unauthorized access to the
system.
•Evaluate your plant as a whole in terms of security. Use a cell protection concept with
suitable products.
•Keep the firmware up to date. Check regularly for security updates of the firmware and
use them.
•Restrict physical access to the device to qualified personnel.
•Configure a protection level of the CPU.
Device defective
If a fault develops, please send the device to your Siemens representative for repair. Repairs
on-site are not possible.
Decommissioning
Shut down the device properly to prevent unauthorized persons from accessing confidential
data in the device memory.
Recycling and disposal
The product is low in pollutants, can be recycled and meets the requirements of the WEEE
directive 2012/19/EU "Waste Electrical and Electronic Equipment".
Do not dispose of the product at public disposal sites. For environmentally friendly recycling
and the disposal of your old device contact a certified disposal company for electronic scrap
or your Siemens contact.
Keep to the local regulations.
You will find information on returning the product on the Internet pages of Siemens Industry
Online Support:
Link: (https://support.industry.siemens.com/cs/ww/en/view/109479891)
SIMATIC NET glossary
The SIMATIC NET glossary describes terms that may be used in this document.
You will find the SIMATIC NET glossary in the Siemens Industry Online Support at the
following address:
Link: (https://support.industry.siemens.com/cs/ww/en/view/50305045)

SIMATIC CP 1542-5
Equipment Manual, 01/2023, C79000-G8976-C326-05 7
Table of contents
Preface ................................................................................................................................................... 3
1 Documentation...................................................................................................................................... 9
2 Product overview, functions................................................................................................................ 11
2.1 Application ........................................................................................................................ 11
2.2 Further functions............................................................................................................... 12
2.3 Configuration limits and performance data......................................................................... 13
2.3.1 Configuration limits ........................................................................................................... 13
2.3.2 Transmission speeds supported.......................................................................................... 13
2.3.3 Characteristic data of the DP interface................................................................................ 13
2.3.4 Characteristics of S7 communication.................................................................................. 14
2.4 Requirements for use......................................................................................................... 15
2.4.1 Usable CPUs....................................................................................................................... 15
2.4.2 Project engineering............................................................................................................ 16
2.4.3 Program blocks.................................................................................................................. 16
2.5 LEDs .................................................................................................................................. 16
3 Installation, wiring, commissioning, operation, disassembly ............................................................. 19
3.1 Important notes on using the device .................................................................................. 19
3.1.1 Notes on use in hazardous areas ........................................................................................ 19
3.1.2 Notes on use in hazardous areas according to ATEX / UKEX / IECEx / CCC-Ex ........................ 19
3.1.3 Notes on use in hazardous areas according to UL HazLoc and FM........................................ 20
3.2 Installation, removal and repairs in hazardous areas ........................................................... 21
3.3 Installation......................................................................................................................... 22
3.4 Connecting and commissioning ......................................................................................... 26
3.5 Mode of the CPU - effect on the CP..................................................................................... 27
3.6 Disassembly....................................................................................................................... 28
4 Configuration, program blocks............................................................................................................ 29
4.1 Configuration in STEP 7...................................................................................................... 29
4.2 Configuring in third-party systems...................................................................................... 29
4.3 Program blocks for communication and distributed I/O....................................................... 29
5 Diagnostics and maintenance ............................................................................................................. 31
5.1 Diagnostics........................................................................................................................ 31
5.1.1 Diagnostics options............................................................................................................ 31
5.1.2 DP slave diagnostics........................................................................................................... 31
5.1.3 Standard diagnostics.......................................................................................................... 33
5.1.4 Device-specific diagnostics in DP-V1................................................................................... 34
5.1.5 DP diagnostics frames when the CPU is in STOP.................................................................. 37

Table of contents
SIMATIC CP 1542-5
8Equipment Manual, 01/2023, C79000-G8976-C326-05
5.2 Maintenance ..................................................................................................................... 37
5.2.1 Update firmware................................................................................................................ 37
5.2.3 Module replacement.......................................................................................................... 40
6 Technical specifications....................................................................................................................... 41
6.1 Technical specifications of the CP (6GK7542-5FX00-0XE0)................................................. 41
6.2 Technical specifications of the CP (6GK7542-5FX10-0XE0)................................................. 42
6.3 PROFIBUS interface terminal assignment............................................................................ 43
6.4 Ambient temperature ........................................................................................................ 43
7 Approvals............................................................................................................................................. 45
8 Dimension drawings............................................................................................................................ 51
Index.................................................................................................................................................... 53

SIMATIC CP 1542-5
Equipment Manual, 01/2023, C79000-G8976-C326-05 9
Documentation
1
Documentation guide
The documentation of the SIMATIC products has a modular structure and covers topics
relating to your automation system.
The complete documentation for the S7-1500 system consists of a system manual, function
manuals and device manuals.
The STEP 7 information system (online help) also supports you when configuring and
programming your automation system.
Overview of the documentation on communication with S7-1500
The following table lists additional documents that supplement this description of the
CP 1542-5. The documents are available on the Internet.
Table 1- 1 Documentation for the CP 1542-5
Topic
Documentation
Important contents
System
description System manual: S7-1500 Automation System (https://support.industry.siemens.com/cs/ww/e
n/view/59191792)
•Application planning
•Installation
•Connecting
•Commissioning
Module properties
Power supplies
(https://support.industry.siemens.com/cs/ww/e
n/ps/13721/man) manual
•Connecting
•Parameter assignment/
addressing
•Interrupts, error messages,
diagnostics and system
alarms
•Technical specifications
•Dimension drawing
Signal modules
(https://support.industry.siemens.com/cs/ww/e
n/ps/13743/man) manual
System
diagnostics
System diagnostics
(https://support.industry.siemens.com/cs/ww/e
n/view/59192926) function manual
•Overview
•Diagnostics evaluation for
hardware/software
Communication
Communication
(https://support.industry.siemens.com/cs/ww/e
n/view/59192925) function manual
•Overview
Function manual PROFINET with STEP 7
(https://support.industry.siemens.com/cs/ww/e
n/view/49948856)
•PROFINET basics
•PROFINET functions
•PROFINET diagnostics

Documentation
SIMATIC CP 1542-5
10 Equipment Manual, 01/2023, C79000-G8976-C326-05
Topic
Documentation
Important contents
Function manual PROFIBUS with STEP 7
(https://support.industry.siemens.com/cs/ww/e
n/view/59193579)
•PROFIBUS basics
•PROFIBUS functions
•PROFIBUS diagnostics
Web server
(https://support.industry.siemens.com/cs/ww/e
n/view/59193560) function manual
•Function
•Operation
Interference-free
installation of
control systems
Designing interference-free controllers
(https://support.industry.siemens.com/cs/ww/e
n/view/59193566) function manual
•Basics
•Electromagnetic
compatibility
•Lightning protection
•Housing selection
Memory concept Structure and Use of the CPU Memory
(https://support.industry.siemens.com/cs/ww/e
n/view/59193101) function manual
•Design
•Principle of operation
•Use
Cycle and
response times Function manual: Cycle and Response Times (https://support.industry.siemens.com/cs/ww/e
n/view/59193566)
•Basics
•Calculations
Analog value
processing
Function manual: Analog value processing
(https://support.industry.siemens.com/cs/ww/e
n/view/67989094)
•Wiring options
•Tables of measured values
SIMATIC manuals
All current manuals for SIMATIC products are available for download free of charge from the
Internet:
Link: (https://support.industry.siemens.com/cs/ww/en)

SIMATIC CP 1542-5
Equipment Manual, 01/2023, C79000-G8976-C326-05 11
Product overview, functions
2
2.1 Application
Application
The communications processor CP 1542-5 is intended for operation in an S7-1500
automation system. The CP 1542-5 allows the connection of an S7-1500 station to a
PROFIBUS fieldbus system.
Supported communications services
In its current configuration, the CP 1542-5 supports the following communications services:
•PROFIBUS DP master (class 1)
–DP master according to EN 50170, DP-V1
–DP master mode for DP slaves according to PROFIBUS DP-V0 and DP-V1
–DP master mode for Siemens DP slaves
–Direct data exchange (DP slave to DP slave)
As a DP master, the CP 1542-5 is capable of enabling direct data exchange for its
assigned DP slaves.
–SYNC/FREEZE
The outputs or inputs can be synchronized by the user program using system function
DPSYNC_FR.
•PROFIBUS DP slave
DP slave according to EN 50170, DP-V0 / DP-V1
Note
DP master or DP slave
The CP only supports operation either as DP master or DP slave.
•S7 communication
–PG communication for uploading / downloading of S7 configuration, diagnostics and
routing
–Operator control and monitoring functions (HMI communication)
–Data exchange over S7 connections
The services of the CP 1542-5 listed above can be used independently at the same time.

Product overview, functions
2.2 Further functions
SIMATIC CP 1542-5
12 Equipment Manual, 01/2023, C79000-G8976-C326-05
2.2 Further functions
Enabling /disabling DP slave - in the standard system
DP slaves can be activated and deactivated by the user program using system function
D_ACT_DP.
Diagnostics requests
As a DP master (class 1), the CP 1542-5 supports diagnostics requests of a DP master (class 2).
Getting the bus topology in a DP master system
The CP 1542-5 operating as DP master supports the measurement of the PROFIBUS bus
topology in a DP master system using a diagnostics repeater (DP slave).
System function DP_TOPOL in the user program can instruct diagnostics repeaters to measure
the PROFIBUS BUS topology in a DP master system.
Time-of-day synchronization - time master or time slave
The CP 1542-5 can be enabled for time-of-day synchronization. As an alternative, the CP can
be configured as time master or time slave on PROFIBUS.
•Time master: The CP is synchronized using the time of day in the S7-1500 station and
outputs the time of day on PROFIBUS. The output interval can be set.
•Time slave: The CP receives time-of-day frames on PROFIBUS and outputs the time within
the S7-1500 station. The output interval within the S7-1500 station is set permanently to
10 seconds.
Note
Recommendation for setting the time
It is advisable to set the time
-of-day master so that time-of-day frames are sent at intervals of
approximately 10 seconds. This achieves as small a deviation as possible between the internal
time and the absolute time.
Web diagnostics
With the aid of Web diagnostics of the CPU, you read the diagnostics data from an S7 station
via the Web browser on the PG/PC.
In terms of the CP, the Web pages provide the following information:
•Module and status information
•Special information on the DP master system (status of the DP slaves)

Product overview, functions
2.3 Configuration limits and performance data
SIMATIC CP 1542-5
Equipment Manual, 01/2023, C79000-G8976-C326-05 13
2.3 Configuration limits and performance data
2.3.1 Configuration limits
When using the CP type described here, the following limits apply:
•The number of CPs that can be operated in a rack depends on the CPU type being used.
Note the information in the documentation of the CPU, see Documentation (Page 9)
Note
Measured values of transfer or reaction times
Measurements of transfer and reaction times in Ethernet, PROFIBUS and PROFINET networks
for a series of configurations can be found on the Internet
(https://support.industry.siemens.com/cs/ww/en/view/25209605)
2.3.2 Transmission speeds supported
The transmission speed is set with the SIMATIC STEP 7 configuration software.
Note
Remember the cable length
The permitted cable length must be kept to depending on the transmission speed.
Refer to the information in the section Technical specifications (Page 41)
2.3.3 Characteristic data of the DP interface
General characteristic data
No special program blocks are required for DP mode. The interfacing to the distributed I/O is
by direct I/O access or using program blocks (SFCs/SFBs) of the CPU.
Table 2- 1 General characteristic data of DP mode
Characteristic
Explanation / values
Number of operable DP slaves
32
Max. size of the input area of all DP slaves
2 Kbytes
Max. size of the output area of all DP slaves
2 Kbytes
Maximum size of the input area per DP slave
244 bytes

Product overview, functions
2.3 Configuration limits and performance data
SIMATIC CP 1542-5
14 Equipment Manual, 01/2023, C79000-G8976-C326-05
Characteristic
Explanation / values
Maximum size of the output area per DP slave
244 bytes
Max. size of the consistent area for a module
128 bytes
Diagnostics requests
As a DP master (class 1), the CP 1542-5 supports diagnostics requests of a DP master (class 2).
DP startup behavior
Note
Increasing the default value for startup parameters
- configuration of the CPU
In some situations, it is necessary to increase the default value for the startup parameter
"Parameter assignment time for the distributed I/O" in
the configuration of the CPU:
•
When there is a large number of modules (DP slaves) configured that can be assigned
parameters.
•
When a high value is configured for the constant bus cycle time in the network properties
of the PROFIBUS DP line.
2.3.4 Characteristics of S7 communication
General characteristic data
The following information is important when operating S7 connections:
Table 2- 2 General characteristics of S7 connections
Characteristic
Explanation / values
Number of S7 connections that can
be operated via PROFIBUS
Operable in total: Max. 16
The value depends on the S71500 CPU being used.

Product overview, functions
2.4 Requirements for use
SIMATIC CP 1542-5
Equipment Manual, 01/2023, C79000-G8976-C326-05 15
2.4 Requirements for use
2.4.1 Usable CPUs
The following CPUs can be used as local CPU of the communications module:
•Compatible CPUs
All CPUs that can be configured in STEP 7 as of firmware version V2.1 from the following
series:
–Standard CPUs (CPU 15xx)
–Compact CPUs (CPU 15xxC)
–Technology CPUs (CPU 15xxT / TF)
–Fail-safe CPUs (CPU 15xxF)
The following CPUs cannot be used:
•Non-compatible CPUs
–H-CPU (CPU 1517H / HF)
–R-CPUs (CPU 151xR)
Note
Keep the firmware version of the CPUs and communications modules up to date
To avoid possible problems when using newer CPUs together with older communications
modules, you should keep the firmware of both your communications modules and your
CPUs up to da
te.
Check regularly for security updates for the firmware and use them.
Information regarding product news and new firmware versions of the communications
module is available at the following address:
Link: (https://support.industry.siemens.com/cs/ww/en/ps/15672/dl)

Product overview, functions
2.5 LEDs
SIMATIC CP 1542-5
16 Equipment Manual, 01/2023, C79000-G8976-C326-05
2.4.2 Project engineering
Configuration
To configure the CP, the following configuration tool is required:
STEP 7 version
CP (6GK7542-5FX00-0XE0)
CP (6GK7542-5FX10-0XE0)
STEP 7 Professional V16
The functionality of the CP with
firmware version V2.0.4 can be
configured.
The CP is configurable, but with the
functionality of the CP (6GK7542-
5FX00-0XE0) with firmware
version V2.0.4.
STEP 7 Professional V17
The functionality of the CP with
firmware version V2.0.5 can be
configured.
The CP is configurable, but with the
functionality of the CP (6GK7542-
5FX00-0XE0) with firmware
version V2.0.5.
STEP 7 Professional V18
The functionality of the CP with
firmware version V2.0.5 can be
configured.
The functionality of the CP with
firmware version V3.0 can be
configured.
Downloading the configuration data
When the configuration data is downloaded to the CPU, the CP is supplied with the relevant
configuration data. The configuration data can be downloaded to the CPU via PROFIBUS or
any PROFINET interface of the S7-1500 station.
2.4.3 Program blocks
For the use of the program blocks for the CP, STEP 7 in the following version is required:
STEP 7 version
CP (6GK7542-5FX00-0XE0)
CP (6GK7542-5FX10-0XE0)
STEP 7 Professional V17
Using the program blocks for the
CP with firmware version V2.0.5
Using the program blocks for the
CP (6GK7542-5FX00-0XE0) with
firmware version V2.0.5
STEP 7 Professional V18
Using the program blocks for the
CP with firmware version V2.0.5
Using the program blocks for the
CP with firmware version V3.0
2.5 LEDs
The status and error displays of the CP 1542-5 are described below.
You can find additional information on "Interrupts" in the STEP 7 online help.
You can find additional information on "Diagnostics" and "System alarms" in the System
diagnostics (https://support.industry.siemens.com/cs/ww/en/view/59192926) function
manual.

Product overview, functions
2.5 LEDs
SIMATIC CP 1542-5
Equipment Manual, 01/2023, C79000-G8976-C326-05 17
LED display
The following figure shows the LEDs of the CP 1542-5 .
①
RUN/STOP LED
②
ERROR LED
③
MAINT LED
Figure 2-1 LED display of the CP 1542-5 (without front cover)
Meaning of the LED displays
The CP 1542-5 has 3 LEDs to display the current operating status and the diagnostics status
and these have the following meanings:
•
RUN/STOP LED
(one-color LED: green)
•
ERROR LED
(one-color LED: red)
•
MAINT LED
(one-color LED: yellow)

Product overview, functions
2.5 LEDs
SIMATIC CP 1542-5
18 Equipment Manual, 01/2023, C79000-G8976-C326-05
The following table shows the meaning of the various combinations of colors of the
RUN/STOP, ERROR and MAINT LEDs.
Table 2- 3 Meaning of the LEDs
RUN/STOP LED
ERROR LED
MAINT LED
Meaning
LED off
LED off
LED off
No supply voltage on the CP or supply
voltage too low.
LED lit green
LED lit red
LED lit yellow
LED test during startup
LED lit green
LED lit red
LED off
Startup (booting the CP)
LED lit green
LED off
LED off
CP is in RUN mode.
No disruptions
LED flashing
green
LED off LED off
No CP configuration exists
Loading firmware
LED lit green
LED flashing red
LED off
A diagnostics event has occurred.
LED lit green
LED off
LED lit yellow
Maintenance, maintenance is demanded.
LED lit green LED off
LED flashing
yellow
Maintenance is required.
Downloading the user program
LED flashing
green
LED flashing red LED flashing
yellow
Module fault
Diagnostics with LEDs
Diagnostics using the LEDs is the first means of narrowing down errors/faults. To narrow the
error/fault down even further, evaluate the message on the display of the S7-1500 CPU. If
errors/faults occur, you can also identify them using the Web server or by evaluating the
diagnostics buffer of the CPU. The diagnostics buffer of the CPU contains plain language
information about the error/fault that has occurred. The diagnostics buffer is accessible via
STEP 7, the display and the Web server.

SIMATIC CP 1542-5
Equipment Manual, 01/2023, C79000-G8976-C326-05 19
Installation, wiring, commissioning, operation,
disassembly
3
3.1 Important notes on using the device
Safety notices on the use of the device
Note the following safety notices when setting up and operating the device and during all
associated work such as installation, connecting up or replacing the device.
3.1.1 Notes on use in hazardous areas
WARNING
The device may only be operated in an environment with pollution degree 1 or 2 as
described in EN/IEC 60664-1, GB/T 16935.1.
WARNING
EXPLOSION HAZARD
Do not connect or disconnect cables to or from the device when a flammable or
combustible atmosphere is present.
3.1.2 Notes on use in hazardous areas according to ATEX / UKEX / IECEx / CCC-Ex
WARNING
Requirements for the cabinet
To comply with EU Directive 2014/34 EU (ATEX 114), UK Regulation SI 2016/1107 or the
conditions of IECEx or CCC-Ex, the housing or cabinet must meet the requirements of at
least IP54 (according to EN/IEC 60529, GB/T 4208) in compliance with EN IEC/IEC 60079-7,
GB 3836.8.

Installation, wiring, commissioning, operation, disassembly
3.1 Important notes on using the device
SIMATIC CP 1542-5
20 Equipment Manual, 01/2023, C79000-G8976-C326-05
WARNING
Suitable cables at high ambient temperatures in hazardous area
At an ambient temperature of ≥60 °C, use heat-resistant cables designed for an ambient
temperature at least 20 °C higher. The cable entries used on the enclosure must comply
with the IP degree of protection required by EN IEC / IEC 60079-0, GB 3836.1.
WARNING
Transient overvoltages
Take measures to prevent transient overvoltages of more than 40% of the rated voltage (or
more than 119 V). This is the case if you only operate devices with SELV (safety extra-low
voltage).
3.1.3 Notes on use in hazardous areas according to UL HazLoc and FM
This equipment is suitable for use in Class I, Division 2, Groups A, B, C and D or non-
hazardous locations only.
This equipment is suitable for use in Class I, Zone 2, Group IIC or non-hazardous locations
only.
WARNING
When used in hazardous environments corresponding to Class I, Division 2 or Class I, Zone
2, the device must be installed in a cabinet or a suitable enclosure.
WARNING
Wall mounting outside of the control cabinet or housing does not fulfill the requirements of
the FM approval.
WARNING
EXPLOSION HAZARD
Replacing components may impair suitability for Class 1, Division 2 or Zone 2.
WARNING
If the device is installed in a cabinet, the inner temperature of the cabinet corresponds to
the ambient temperature of the device.