Siemens PROFIBUS CP 1542-5 User manual

CP 1542-5
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SIMATIC NET
S7-1500 - PROFIBUS
CP 1542-5
Manual
11/2014
C79000
-G8976-C326-03
Preface
Guide to the documentation
1
Product overview
2
Functional characteristics
3
Requirements for use
4
Connecting up /
commissioning
5
Interrupts, diagnostics
messages, error and
system alarms
6
Technical specifications
7
Approvals
8

Siemens AG
Division Process Industries and Drives
Postfach 48 48
90026 NÜRNBERG
GERMANY
C79000-G8976-C326-03
Ⓟ
11/2014 Subject to change
Copyright © Siemens AG 2013 - 2014.
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 1542-5
Manual, 11/2014, C79000-G8976-C326-03 3
Preface
Purpose of the documentation
This device 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.
See also Guide to the documentation (Page 7)
Conventions
Make sure you read the special notices below:
Note
A notice contains important information on the product described in the documentation,
handling the product or about parts of the documentation you should pay particular attention
to.
Names
●In this document, the term "CP" is also used instead of the full product name.
●The name STEP 7 is used to mean the STEP 7 Professional configuration tool.
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 entry ID:
50305045 (http://support.automation.siemens.com/WW/view/en/50305045)

Preface
CP 1542-5
4Manual, 11/2014, C79000-G8976-C326-03
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:
●DOC_OSS-S7CMCP_74.pdf
●DOC_OSS-CP1542-5_76.pdf
Security information
Siemens provides products and solutions with industrial security functions that support the
secure operation of plants, solutions, machines, equipment and/or networks. They are
important components in a holistic industrial security concept. With this in mind, Siemens’
products and solutions undergo continuous development. Siemens recommends strongly
that you regularly check for product updates.
For the secure operation of Siemens products and solutions, it is necessary to take suitable
preventive action (e.g. cell protection concept) and integrate each component into a holistic,
state-of-the-art industrial security concept. Third-party products that may be in use should
also be considered. For more information about industrial security, visit
http://www.siemens.com/industrialsecurity.
To stay informed about product updates as they occur, sign up for a product-specific
newsletter. For more information, visit http://support.automation.siemens.com.
Trademarks
The following and possibly other names not identified by the registered trademark sign ®are
registered trademarks of Siemens AG:
SIMATIC NET, CP 1542-5

CP 1542-5
Manual, 11/2014, C79000-G8976-C326-03 5
Table of contents
Preface ................................................................................................................................................... 3
1 Guide to the documentation .................................................................................................................... 7
2 Product overview .................................................................................................................................... 9
2.1 Properties..................................................................................................................................9
2.2 Further functions .....................................................................................................................11
3 Functional characteristics...................................................................................................................... 13
3.1 Transmission speeds supported.............................................................................................13
3.2 Characteristic data of the DP interface ...................................................................................13
3.3 Characteristics of S7 communication .....................................................................................14
4 Requirements for use............................................................................................................................ 15
4.1 Configuration limits .................................................................................................................15
4.2 Project engineering .................................................................................................................15
4.3 Programming ..........................................................................................................................15
5 Connecting up / commissioning............................................................................................................. 17
5.1 Important notes on using the device.......................................................................................17
5.2 Installing and commissioning the CP 1542-5 .........................................................................19
5.3 Replacing a module without a programming device...............................................................21
5.4 Mode of the CPU - effect on the CP .......................................................................................22
6 Interrupts, diagnostics messages, error and system alarms................................................................... 23
6.1 Status and error display of the CP..........................................................................................23
6.2 Diagnostics options.................................................................................................................25
6.3 DP slave diagnostics...............................................................................................................25
6.4 Standard diagnostics ..............................................................................................................27
6.5 Device-specific diagnostics in DP-V1 .....................................................................................29
6.6 DP diagnostics frames when the CPU is in STOP .................................................................32
7 Technical specifications ........................................................................................................................ 33
8 Approvals.............................................................................................................................................. 35
Index..................................................................................................................................................... 39

Table of contents
CP 1542-5
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CP 1542-5
Manual, 11/2014, C79000-G8976-C326-03 7
Guide to the documentation
1
Introduction
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 and are available in the Internet.
Table 1- 1 Documentation for the CP 1542-5
Topic
Documentation
Most important contents
System descrip-
tion
System manual: S7-1500 Automation System
(http://support.automation.siemens.com/WW/vi
ew/en/59191792)
•Application planning
•Installation
•Connecting
•Commissioning
Module properties Device manual: Power supplies
(http://support.automation.siemens.com/WW/vi
ew/en/57251228)
•Connecting
•Parameter assignment/
addressing
•Interrupts, error messages,
diagnostics and system
alarms
•Technical specifications
•Dimensional drawing
Device manual: Signal modules
(http://support.automation.siemens.com/WW/vi
ew/en/59174020)
System diagnos-
tics
Function manual: System diagnostics
(http://support.automation.siemens.com/WW/vi
ew/en/59192926)
•Overview
•Diagnostics evaluation for
hardware/software
Communication Function manual: Communication
(http://support.automation.siemens.com/WW/vi
ew/en/59192925)
•Overview
Function manual: PROFINET with STEP 7 V12
(http://support.automation.siemens.com/WW/vi
ew/en/49948856)
•PROFINET basics
•PROFINET functions
•PROFINET diagnostics

Guide to the documentation
CP 1542-5
8Manual, 11/2014, C79000-G8976-C326-03
Topic
Documentation
Most important contents
Function manual: PROFIBUS with STEP 7 V12
(http://support.automation.siemens.com/WW/vi
ew/en/59193579)
•PROFIBUS basics
•PROFIBUS functions
•PROFIBUS diagnostics
Function manual: Web Server
(http://support.automation.siemens.com/WW/vi
ew/en/59193560)
•Function
•Operation
Interference-free
installation of
control systems
Function Manual: Interference-free installation
of control systems
(http://support.automation.siemens.com/WW/vi
ew/en/59193566)
•Basics
•Electromagnetic compatibil-
ity
•Lightning protection
•Housing selection
Memory concept Function manual: Structure and Use of the
CPU Memory
(http://support.automation.siemens.com/WW/vi
ew/en/59193101)
•Design
•Principle of operation
•Use
Cycle and re-
sponse times
Function manual: Cycle and Response Times
(http://support.automation.siemens.com/WW/vi
ew/en/59193566)
•Basics
•Calculations
Analog value
processing
Function manual: Analog value processing
(http://support.automation.siemens.com/WW/vi
ew/en/59193559)
•Wiring options
•Tables of measured values
SIMATIC manuals
All current manuals for SIMATIC products are available for download free of charge from the
Internet (http://www.siemens.com/automation/service&support).
CP/CM documentation in the Manual Collection (article number 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/CMs
The "Version History/Current Downloads for SIMATIC NET S7 CPs (PROFIBUS)" provides
information on all CPs available up to now for SIMATIC S7 (PROFIBUS).
An up-to-date version of this document can be found on the Internet
(http://support.automation.siemens.com/WW/view/en/9836605)

CP 1542-5
Manual, 11/2014, C79000-G8976-C326-03 9
Product overview
2
2.1
Properties
Article number, validity and product names
This description contains information on the following product:
CP 1542-5
Article number6GK7 542-5FX00-0XE0
Hardware product version 1
Firmware version V1.0
Communications processor 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 2-1 View of the CP 1542-5 with closed (left) and open (right) front cover

Product overview
2.1 Properties
CP 1542-5
10 Manual, 11/2014, C79000-G8976-C326-03
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)
–PROFIBUS DP according to EN 50170 DPV1, DP master
–DP master mode for DP slaves complying with the PROFIBUS DPV0 and DPV1
standard
–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"
DP slaves.
–SYNC / FREEZE
The outputs or inputs can be synchronized by the user program using system function
DPSYNC_FR.
●
PROFIBUS DP slave
PROFIBUS DP according to EN 50170 DPV1, DP slave
Note
DP master or DP slave
Please note, however: The CP 1542
-
5 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 via S7 connections
The services of the CP 1542-5 listed above can be used independently at the same time.

Product overview
2.2 Further functions
CP 1542-5
Manual, 11/2014, C79000-G8976-C326-03 11
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
2.2 Further functions
CP 1542-5
12 Manual, 11/2014, C79000-G8976-C326-03

CP 1542-5
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Functional characteristics
3
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
(
http://support.automation.siemens.com/WW/view/en/25209605)
3.1
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 33)
3.2
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 3- 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
Maximum size of the output area per DP slave
244 bytes
Max. size of the consistent area for a module
128 bytes

Functional characteristics
3.3 Characteristics of S7 communication
CP 1542-5
14 Manual, 11/2014, C79000-G8976-C326-03
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.
3.3
Characteristics of S7 communication
General characteristic data
The following information is important when operating S7 connections:
Table 3- 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.

CP 1542-5
Manual, 11/2014, C79000-G8976-C326-03 15
Requirements for use
4
4.1
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 Guide to the documentation
(Page 7)
4.2
Project engineering
Configuration and downloading the configuration data
When the configuration data is downloaded to the CPU, the CP 1542-5 is supplied with the
configuration information. The configuration data can be downloaded to the CPU via
PROFIBUS or any PROFINET interface of the S7-1500 station.
The following version of STEP 7 is required:
STEP 7 version and additional modules
Functions of the CP
STEP 7 Professional V12 SP1 The full functionality of the CP 1542-5 (6GK7
542 5FX00 0XE0) can be configured
4.3
Programming
Program blocks
For communications services, there are preprogrammed program blocks (instructions)
available as the interface in your STEP 7 user program.
Table 4- 1 Instructions for PROFIBUS DP
System blocks and sys-
tem functions
Meaning when used with CP
DPSYC_FR
DP slaves synchronize / freeze inputs (SYNC/FREEZE instruction)
DPNRM_DG
Reading the diagnostics data of a DP slave
DP_TOPOL Detecting the topology for the DP master system
WRREC
Writing the data record of a DP slave

Requirements for use
4.3 Programming
CP 1542-5
16 Manual, 11/2014, C79000-G8976-C326-03
System blocks and sys-
tem functions
Meaning when used with CP
RDREC
Reading the data record of a DP slave
GETIO
Reading the process image of a DP standard slave
SETIO
Transferring the process image of a DP standard slave
GETIO_PART Reading the process image partition of a DP standard slave
SETIO_PART
Transferring the process image partition of a standard DP slave
D_ACT_DP
Disable / enable DP slaves
DPRD_DAT
Reading consistent data of a DP standard slave
DPWR_DAT
Writing consistent data of a DP standard slave
RALRM Event-driven reading of interrupt information (diagnostics, pull/plug,
hardware interrupt) and DPV1-specific interrupts (update, status, vendor-
specific interrupt)
Refer to the documentation of the program blocks in the online help of STEP 7
Calling program blocks (instructions) for distributed I/O
Several calls are necessary for the instructions of the distributed I/O.
The time required to process the job depends on load, round-trip time and transmission
speed. If these instructions are called in a loop within one cycle, the cycle time could be
exceeded.
Exceptions:
●Only one call is required for the RALRM instruction "receive alarm".
Program blocks for DPV1 (according to the PNO standard) 1):
●Instruction RDREC "Read data record from a DP slave" corresponds to SFC59 in terms
of function
●Instruction WRREC "Write data record to a DP slave" corresponds to SFC58 in terms of
function
●Instruction RALRM "Read interrupt information from a DP slave" - call in an interrupt OB
1) PNO: PROFIBUS Users Organization
See also
8797900 (http://support.automation.siemens.com/WW/view/en/8797900)

CP 1542-5
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Connecting up / commissioning
5
5.1
Important notes on using the device
Safety notices on the use of the device
The following safety notices must be adhered to when setting up and operating the device
and during all associated work such as installation, connecting up, replacing devices or
opening the device.
General notices
WARNING
Safety extra low voltage
The equipment is designed for operation with Safety Extra-Low Voltage (SELV) by a
Limited Power Source (LPS). (This does not apply to 100 V...240 V devices.)
This means that only SELV / LPS complying with IEC 60950-1 / EN 60950-1 / VDE 0805-1
must be connected to the power supply terminals. The power supply unit for the equipment
power supply must comply with NEC Class 2, as described by the National Electrical Code
(r) (ANSI / NFPA 70).
There is an additional requirement if devices are operated with a redundant power supply:
If the equipment is connected to a redundant power supply (two separate power supplies),
both must meet these requirements.
General notices on use in hazardous areas
WARNING
Risk of explosion when connecting or disconnecting the device
EXPLOSION HAZARD
DO NOT CONNECT OR DISCONNECT EQUIPMENT WHEN A FLAMMABLE OR
COMBUSTIBLE ATMOSPHERE IS PRESENT.

Connecting up / commissioning
5.1 Important notes on using the device
CP 1542-5
18 Manual, 11/2014, C79000-G8976-C326-03
WARNING
Replacing components
EXPLOSION HAZARD
SUBSTITUTION OF COMPONENTS MAY IMPAIR SUITABILITY FOR CLASS I, DIVISION
2 OR ZONE 2.
WARNING
Requirements for the cabinet/enclosure
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
Restricted area of application
This equipment is suitable for use in Class I, Division 2, Groups A, B, C and D or non-
hazardous locations only.
WARNING
Restricted area of application
This equipment is suitable for use in Class I, Zone 2, Group IIC or non-hazardous locations
only.
WARNING
LAN attachment
A LAN or LAN segment with the attachments belonging to it should be within a single low-
voltage supply system and within a single building. Make sure that the LAN is in an of type
A environment according to IEEE 802.3 or in a type 0 environment according to IEC TR
62101.
Never establish a direct electrical connection to TNV networks (telephone network) or
WANs (Wide Area Network).
General notices on use in hazardous areas according to ATEX
WARNING
Requirements for the cabinet/enclosure
To comply with EU Directive 94/9 (ATEX95), this enclosure must meet the requirements of
at least IP54 in compliance with EN 60529.

Connecting up / commissioning
5.2 Installing and commissioning the CP 1542-5
CP 1542-5
Manual, 11/2014, C79000-G8976-C326-03 19
WARNING
Suitable cables for temperatures in excess of 70 °C
If the cable or conduit entry point exceeds 70°C or the branching point of conductors
exceeds 80°C, special precautions must be taken. If the device is operated at ambient
temperatures above 50°C, the permitted temperature range of the selected cable must be
suitable for the temperatures actually measured.
WARNING
Protection against transient voltage surges
Provisions shall be made to prevent the rated voltage from being exceeded by transient
voltage surges of more than 40%. This criterion is fulfilled, if supplies are derived from
SELV (Safety Extra-Low Voltage) only.
5.2
Installing and commissioning the CP 1542-5
WARNING
Read the system manual "S7-1500 Automation System"
Prior to installation, connecting up and commissioning, read the relevant sections in the
system manual "S7-1500 Automation System" (references to documentation, refer to the
section Guide to the documentation (Page 7)).
Make sure that the power supply is turned off when installing/uninstalling the devices.
Configuration
Commissioning the CP fully is only possible if the STEP 7 project data is complete.

Connecting up / commissioning
5.2 Installing and commissioning the CP 1542-5
CP 1542-5
20 Manual, 11/2014, C79000-G8976-C326-03
Procedure for installation and commissioning
Step
Execution
Notes and explanations
1
When installing and connecting up,
keep to the procedures described for
installing I/O modules in the system
manual "S7-1500 Automation Sys-
tem".
3
Connect the CP to PROFIBUS via the
RS-485 socket.
Underside of the CP
4
Turn on the power supply.
5
Close the front covers of the module
and keep them closed during opera-
tion.
6
The remaining steps in commission-
ing involve downloading the STEP 7
project data.
The STEP 7 project data of the CP is transferred
when you download to the station. To load the
station, connect the engineering station on which
the project data is located to the Ethernet/MPI inter-
face of the CPU.
You will find more detailed information on loading in
the following sections of the STEP 7 online help:
•Downloading project data
•Using online and diagnostics functions