Siemens CP 342-5 User manual

CP 342-5 / CP 342- 
5 FO
_
_________________
_
_
_________________
_
_
________________
_
_
_
_________________
_
_
_________________
_
_
_________________
_
_
_________________
_
_
_________________
_
_
_________________
_
_
_________________
_
_
_________________
_
SIMATIC NET
S7 CPs for PROFIBUS
CP 342-5 / CP 342-5 FO
Manual
Manual Part B
10/2011
C79000-G8976-C146-09
Product overview and notes
Properties / services
1
Requirements for use
2
Installation and
commissioning
3
Displays and operator
controls
4
Performance data and
behavior in operation
5
Further notes on operation
6
Compatibility with the
previous product
7
Technical specifications
8
Certifications and approvals
A
References
B

Legal information
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
with a safety alert symbol, indicates that minor personal injury can result if proper precautions are not taken.
CAUTION
without a safety alert symbol, indicates that property damage can result if proper precautions are not taken.
NOTICE
indicates that an unintended result or situation can occur if the relevant information is not taken into account.
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.
Siemens AG
Industry Sector
Postfach 48 48
90026 NÜRNBERG
GERMANY
Order number: C79000-G8976-C146
Ⓟ 11/2011 Technical data subject to change
Copyright © Siemens AG 2010,
2011.
All rights reserved

CP 342-5 / CP 342-5 FO
Manual, 10/2011, C79000-G8976-C146-09 3
Product overview and notes





&3
&3)2
① 9-pin D-sub female connector
② Duplex sockets for optical connectors
③ Status and error displays
④ Mode selector
⑤ Connector for power supply and functional ground

Product overview and notes
CP 342-5 / CP 342-5 FO
4 Manual, 10/2011, C79000-G8976-C146-09
Product names
This manual contains information on the following products:
● CP 342−5
order number 6GK7 342−5DA03−0XE0
hardware product version 1 / firmware version V6.0
for SIMATIC S7−300 / C7−300
● CP 342−5 FO
order number 6GK7 342−5DF00−0XE0
hardware product version 2 / firmware version V5.4
for SIMATIC S7−300 / C7−300
Structure of the documentation
The documentation for this device consists of the following parts:
● Manual Part A - Configuration manual "Configuring and Commissioning S7 CPs for
PROFIBUS"
You will find this manual on the Manual DVD that ships with every CP or on the Internet
under the following entry ID:
1158693 (http://support.automation.siemens.com/WW/view/en/1158693)
● Part B - Manual "S7 CPs for PROFIBUS CP 342-5 / CP 342-5 FO" (this manual)
License conditions
NOTICE
Open source software
Read the license conditions for open source software carefully before using the product.
The acceptance of the disclaimers of liability and warranty it contains is a clear precondition
of the use of open source software.
You will find the license conditions on the same data medium as this manual under the
following file name:
DOC_OSS-S7-CM-CP_74.pdf
Note
NOTICE
Compatibility with previous versions
Read the information relating to enhanced functions and any restrictions that may apply in
the sectionCompatibility with the previous product (Page 35).

Product overview and notes
CP 342-5 / CP 342-5 FO
Manual, 10/2011, C79000-G8976-C146-09 5
WARNING
Danger from emitted light beam (CP 342-5 FO)
Never look directly into the opening of the optical transmission diode or the optical fiber.
The emitted light beam could endanger your eyes.
Note
Difference between the CP 342-5 and CP 342-5 FO
When the function being described only applies to one of the two device types CP 342-5 or
CP 342-5 FO, the text will point out which device the information applies to.
SIMATIC NET glossary
Explanations of the specialist terms used in this documentation can be found in the SIMATIC
NET glossary.
You will find the SIMATIC NET glossary here:
● SIMATIC NET Manual DVD
The DVD ships with most SIMATIC NET products.
● On the Internet under the following entry ID:
50305045 (http://support.automation.siemens.com/WW/view/en/50305045)

Product overview and notes
CP 342-5 / CP 342-5 FO
6 Manual, 10/2011, C79000-G8976-C146-09

CP 342-5 / CP 342-5 FO
Manual, 10/2011, C79000-G8976-C146-09 7
Table of contents
Product overview and notes....................................................................................................................... 3
1 Properties / services .................................................................................................................................. 9
1.1 Application......................................................................................................................................9
1.2 Communications services ..............................................................................................................9
2 Requirements for use .............................................................................................................................. 11
2.1 Operation in control device families.............................................................................................11
2.2 Project engineering ......................................................................................................................11
2.3 Programming................................................................................................................................12
3 Installation and commissioning................................................................................................................ 15
3.1 Important notes on using the device............................................................................................15
3.2 Procedure for installation and commissioning .............................................................................17
4 Displays and operator controls ................................................................................................................ 19
4.1 LED displays ................................................................................................................................19
4.2 Mode selector...............................................................................................................................21
5 Performance data and behavior in operation ........................................................................................... 23
5.1 Transmission speeds supported..................................................................................................23
5.2 Characteristic data of the DP interface / DP master....................................................................23
5.3 Characteristic data of the DP interface / DP slave.......................................................................25
5.4 Characteristic data of open communications services (SEND/RECEIVE interface) over
FDL connections ..........................................................................................................................27
5.5 Characteristics of S7 communication ..........................................................................................28
5.6 Characteristic data for multiplexing OP connections ...................................................................30
5.7 Parallel use of communications services (multiprotocol mode)...................................................30
6 Further notes on operation....................................................................................................................... 33
6.1 General operation on PROFIBUS................................................................................................33
6.2 DP mode ......................................................................................................................................33
6.3 Interface in the user program.......................................................................................................34
6.4 Other information available about the CP....................................................................................34
7 Compatibility with the previous product.................................................................................................... 35
7.1 Enhanced functions and modifications ........................................................................................35
7.2 Replacing older modules / module replacement..........................................................................37

Table of contents
CP 342-5 / CP 342-5 FO
8 Manual, 10/2011, C79000-G8976-C146-09
7.3 Compatibility in the user program in DP mode ........................................................................... 38
8 Technical specifications........................................................................................................................... 43
A Certifications and approvals..................................................................................................................... 45
B References .............................................................................................................................................. 47
Index........................................................................................................................................................ 51

CP 342-5 / CP 342-5 FO
Manual, 10/2011, C79000-G8976-C146-09 9
Properties / services 1
1.1 Application
Automation system
The CP 342-5/342-5 FO communications processor is intended for operation in a SIMATIC
S7-300 / C7-300 automation system. It allows connection of the S7-300 / C7-300 to a
PROFIBUS fieldbus system.
1.2 Communications services
Supported communications services
The current version of the CP 342-5/342-5 FO supports the following communications
services:
● PROFIBUS DP
– as DP master class 1 (PROFIBUS DP according to EN 50170 DPV0, DP master)
– as DP slave (PROFIBUS DP according to EN 50170 DPV0, DP slave)
NOTICE
DP master or DP slave
Please note, however: The CP 342-5/342-5 FO supports operation as a DP master
or DP slave only as alternatives. You can also deselect DP mode altogether.

Properties / services
1.2 Communications services
CP 342-5 / CP 342-5 FO
10 Manual, 10/2011, C79000-G8976-C146-09
● S7 communication and PG/OP communication
– PG functions with uploading / downloading of FM modules, configuration / diagnostics
and routing
– Operator control and monitoring functions (HMI)
Multiplexing TD/OP connections
When multiplexing OP connections, the following acyclic services are supported:
- read once
- write once
- read system status list
– Client and server for data exchange via communication blocks on S7 connections
configured at both ends
The following blocks / functions are available:
BSEND FB 12, BRCV FB 13,
PUT FB 14, GET FB 15
USEND FB 8, URCV FB 9
C_CNTRL FC 62
You will find a more detailed description in /5/ (Page 49)
Note
The partner station can be an S7-300, S7-400 or PG/PC application with SIMATIC
NET OPC server; raw data tags using BSEND/BRECV to WinCC are not supported.
– Server for data exchange on connections configured at both ends without
communications blocks on the S7-300 / C7-300 station
● Open communications services (SEND/RECEIVE interface) over FDL connections of the
following type:
– Specified FDL connections
– Free layer 2 connections (SDA, SDN)
– Broadcast
– Multicast
The services of the CP 342-5/342-5 FO listed here can be used independently at the
same time.

CP 342-5 / CP 342-5 FO
Manual, 10/2011, C79000-G8976-C146-09 11
Requirements for use 2
2.1 Operation in control device families
SIMATIC device families
You can operate the CP in the following device families:
● SIMATIC S7-300 stations with the following CPU types:
– Standard
– Compact
– Modular
● SIMATIC C7 compact units in C7 packaging system
● SINUMERIK
2.2 Project engineering
Configuration and downloading the configuration data
It is possible to download the configuration data to the CP via MPI or PROFIBUS. The
following version of STEP 7 is required:
STEP 7 version Functions of the CP
STEP 7 as of V5.1 The functional range of the following CP type can
be configured:
6GK7 342−5DA02−0XE0
6GK7 342−5DF00−0XE0
STEP 7 as of V5.4.5 with Hotfix 4 and HSP
1049
STEP 7 as of V5.5.2
STEP 7 Professional V11
The functional range of the following CP type can
be configured:
6GK7 342−5DA03−0XE0.
Depending on what is available on your PG / PC and the S7-300 station, use one of the following
connectors to load the configuration data: MPI, Industrial Ethernet or PROFIBUS.

Requirements for use
2.3 Programming
CP 342-5 / CP 342-5 FO
12 Manual, 10/2011, C79000-G8976-C146-09
NOTICE
Changing bus parameters
If you change the bus parameters in the configuration data, you must not load this
configuration data on the CP via PROFIBUS!
Note
Extensive configuration
Before loading an extensive configuration over a previous configuration, you should run a
memory reset on the CP.
By doing this, you avoid the configuration storage space on the CP being exceeded. If the
configuration storage space on the CP is not adequate, the diagnostics buffer of the CP
reports a lack of resources when you download the configuration data.
Replacing a module without a programming device
The CP supports the option of storing the configuration data of the CP on the CPU. If you
use this option, this means that module replacement is possible without having to load the
configuration data from the PG again.
The configuration data is then stored in load memory of the CPU. Storage of the
configuration data is protected from power failure by the battery backup or the EPROM
module card in the CPU.
2.3 Programming
Program blocks
For some communications services, there are preprogrammed functions and function blocks
(FCs / FBs / instructions) available as the interface in your STEP 7 user program.
NOTICE
Current program blocks
We recommend that you always use the latest block versions for all module types.
You will find information on the current block versions and the current blocks to download
from the Internet in our Customer Support under entry ID:
8797900 (http://support.automation.siemens.com/WW/news/en/8797900)
This recommendation assumes that you are using the latest firmware for the particular
module type.

Requirements for use
2.3 Programming
CP 342-5 / CP 342-5 FO
Manual, 10/2011, C79000-G8976-C146-09 13
Further information
● On programming and use of the CP as DP master or DP slave
On initializing the CP as DP master or DP slave and on the running of the program, see
/1/ (Page 47)
● Interfaces and program sequence
Refer to the documentation of the program blocks in the online help of STEP 7 or in the
manual /4/ (Page 48)

Requirements for use
2.3 Programming
CP 342-5 / CP 342-5 FO
14 Manual, 10/2011, C79000-G8976-C146-09

CP 342-5 / CP 342-5 FO
Manual, 10/2011, C79000-G8976-C146-09 15
Installation and commissioning 3
3.1 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
Danger from emitted light beam (CP 342-5 FO)
Never look directly into the opening of the optical transmission diode or the optical fiber.
The emitted light beam could endanger your eyes.
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.
WARNING
Opening the device
DO NOT OPEN WHEN ENERGIZED.

Installation and commissioning
3.1 Important notes on using the device
CP 342-5 / CP 342-5 FO
16 Manual, 10/2011, C79000-G8976-C146-09
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.
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.
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.

Installation and commissioning
3.2 Procedure for installation and commissioning
CP 342-5 / CP 342-5 FO
Manual, 10/2011, C79000-G8976-C146-09 17
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 equipment is operated in an air
ambient in excess of 50 °C, only use cables with admitted maximum operating temperature
of at least 80 °C.
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.
3.2 Procedure for installation and commissioning
What to do / steps
1. Install the CP on the S7 standard rail.
Slots 4 to 11 are permitted for the CP in racks 0 to 3 (connected by IM 360/361).
2. Establish the connection via the enclosed bus connector to the backplane bus.
Proceed as described in the sections dealing with installation and wiring, explained in
detail in /2/ (Page 48).
NOTICE
No operation in the expansion rack with connection via an IM 365
The CP cannot be used in an expansion rack that is connected via the IM 365! Reason:
The required communication bus is not connected to the extension rack via the IM 365.

Installation and commissioning
3.2 Procedure for installation and commissioning
CP 342-5 / CP 342-5 FO
18 Manual, 10/2011, C79000-G8976-C146-09
3. Connect the CP to the power supply.
Follow the instructions as described in detail in /2/ (Page 48) when wiring between the
power supply and the CPU.
NOTICE
Connecting to the power supply
Connect the CPU, CP and IM (if used) to the same power supply.
Only wire up the S7300 / C7300 with the power switched off!
NOTICE
Guidelines for grounding and chassis grounding concept
When it ships, the CP has a jumper inserted between the M and functional earth
terminals. If you want to ground the reference potential, do not remove the jumper
between the M and functional earth terminals.
Note the information in the SIMATIC S7 installation guidelines for grounding and chassis
grounding, see Auto-Hotspot
In this document, you will find information on the topic "Setting up an S7-300 with
Earthed Reference Potential" and "Setting up an S7-300 with Unearthed Reference
Potential".
4. Connect the CP to PROFIBUS.
The remaining steps in commissioning involve downloading the configuration data.
For more information on configuration and in particular on node initialization, refer to the
manual /1/ (Page 47) and the online help of the configuration tool.

CP 342-5 / CP 342-5 FO
Manual, 10/2011, C79000-G8976-C146-09 19
Displays and operator controls 4
4.1 LED displays
LEDs on the front panel
On the front panel, you will see the following LEDs for displaying the operational and
communications status:
6)
581
6723
%86)
Figure 4-1 LEDs on the front panel
The LEDs have the following meaning:
● SF: Group error
● BUSF: Bus faults on the PROFIBUS interface
● RUN: RUN mode
● STOP: STOP mode
Unlabeled LED placeholders have no meaning.
LEDs for displaying the operating mode
The different combinations of the LEDs on the front panel indicate the status:
Table 4- 1 LED display schemes
SF(red) BUSF (red) RUN (green) STOP (yellow) CP operating mode
Starting up (STOP → RUN)
Running (RUN)

Displays and operator controls
4.1 LED displays
CP 342-5 / CP 342-5 FO
20 Manual, 10/2011, C79000-G8976-C146-09
SF(red) BUSF (red) RUN (green) STOP (yellow) CP operating mode
Stopping (RUN → STOP)
The time required for the signaled
mode change depends on the size
of the STEP 7 project; this can take
up to 1 minute in large projects.
On completion of the mode change,
the data exchange with the DP
slaves continues.
Stopped (STOP)
In STOP mode, configuring and
performing diagnostics on the CP
remain possible.
Stopped (STOP) with error(s).
In this state, the CPU or intelligent
modules in the rack remain
accessible using PG functions.
Running (RUN) with problems on
PROFIBUS.
Running (RUN) with problems on
the DP slaves.
Ready to begin loading
firmware. (Operating mode
active for a period of 10 s)
or
CP is in DP slave mode and is
not involved in cyclic data
exchange with the DP master.
Loading firmware.
Invalid firmware was loaded
Waiting for firmware update. (CP
currently has an incomplete
firmware version)
Module fault / system error
Note:
The two unlabeled LEDs also flash
in this operating status
Legend - meaning of the symbols:
Symbol
-
Status ON (steady light) OFF Flashing Any