Siemens CP 342-5 User manual

Contents, Product Notes
CP 342-5/342-5 FO Communica-
tions Processor 1
Compatibility – Replacing older
Modules 2
How to Install the Module 3
Technical Data 4
Notes on the CE Mark on
SIMATIC NET Products 5
References 6
Manual
CP 342–5 6GK7 342-5DA02-0XE0
version 1 or higher (firmware V4.0.0)
CP 342–5 FO 6GK7 342-5DF00-0XE0
version 1 or higher (firmware V4.0.0)
06/2000
C79000–G8976–C146
Release 01
SIMATIC NET

Safety Guidelines
This manual contains notices which you should observe to ensure your own personal safety, as well as to
protecttheproductandconnectedequipment.Thesenoticesarehighlightedinthemanualbyawarning
triangle and are marked as follows according to the level of danger:
!Danger
indicatesthatdeath,severepersonalinjuryorsubstantialpropertydamagewillresultifproperprecautions
arenottaken.
!Warning
indicatesthatdeath, severe personal injury or substantial propertydamagecan result if proper precau-
tions are not taken.
!Caution
indicatesthat minor personal injury orproperty damage can result if proper precautions are not taken.
Note
drawsyourattentiontoparticularlyimportantinformationonthe product, handling the
product,orto a particular part of the documentation.
Qualified Personnel
Only qualifiedpersonnel should be allowed to install and work on this equipment. Qualified persons are
defined as persons who are authorized to commission, to ground, and to tag circuits, equipment, and sy-
stemsin accordance with establishedsafety practices and standards.
Correct Usage
Notethefollowing
!Warning
This device and its components may only be used for the applications described in the catalog or the
technicaldescription,andonlyinconnection with devices or components from other manufacturers which
havebeen approvedorrecommended by Siemens.
This product can only function correctly and safely if it is transported, stored, set up, and installed
correctly,andoperatedandmaintainedasrecommended.
Trademarks SIMATICR, SIMATIC HMIRand SIMATIC NETRare registered trademarks of the SIEMENS AG.
Third parties using for their own purpose any other names in this document which refer to trademarks
mightinfringeupontherightsofthetrademarkowners.
Wehavecheckedthecontentsofthismanualforagreementwiththe
hardware and software described. Since deviations cannot be
precludedentirely, we cannot guarantee full agreement. However,
the data in this manual are reviewed regularly and any necessary
corrections included in subsequent editions. Suggestions for
improvementarewelcomed.
Technicaldata subject to change.
ESiemensAG2000
DisclaimerofLiabilityCopyrightESiemensAG 2000 All rights reserved
The reproduction, transmission or use of this document or its
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SiemensAktiengesellschaft C79000-G8976-C146/01

ManualCP 342–5 / CP 342–5 FO
C79000–G8976–C146/01 3
Contents
Product Notes 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1 CP 342-5/342-5 FO Communications Processor 5. . . . . . . . . .
1.1 Characteristics 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2 Performance 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2.1 Transmission Rates 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2.2 Basic Data of the DP Interface/DP Master 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2.3 Basic Data of the DP Interface / DP Slave 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2.4 Data for S5-Compatible Communication (SEND/RECEIVE interface)
on FDL Connections: 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2.5 Basic Data for S7 Communication 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2.6 Using Parallel Communications Services (Multiprotocol Operation) 12. . . . . . . .
1.3 Displays and Mode Selector 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 Compatibility – Replacing older Modules 16. . . . . . . . . . . . . . . .
3 How to Install the Module 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4 Technical Data 23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5 Notes on the CE Mark on SIMATIC NET Products 24. . . . . . . . .
6 References 25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Product Notes
4ManualCP 342–5 / CP 342–5 FO
C79000–G8976–C146/01
Product Notes
Note
All the information in the product information bulletin accompanying the device
described here is up to date and valid and must be read thoroughly.
Compatibility with the Previous Version
The CP 342–5 described here can be used to replace the following CPs
–CP 342–5 6GK7 342–5DA00–0XE0
–CP 342–5 6GK7 342–5DA01–0XE0
The CP 342–5 FO and CP 342–5 are compatible in terms of function.
Note
Please note the extended functions and restrictions as described in Chapter 2
of this manual!

ManualCP 342–5 / CP 342–5 FO
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1 CP 342-5/342-5 FO Communications Processor
Application
The CP 342-5/342-5 FO communications processor is intended for operation in a
programmable controller of the SIMATIC S7-300 series. It allows the S7-300 to be
connected to a PROFIBUS fieldbus system.
Design
Mode selector
Status and error
displays
Connection for power supply
and functional ground
(9-pin sub-D female
connector)
CP 342-5 CP 342-5 FO
(Duplex sockets for optical
connection)
Figure1 Front View of the CPs 342-5 / 342-5 FO
Configuration
Configuration is possible via MPI or LAN/PROFIBUS.

6ManualCP 342–5 / CP 342–5 FO
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1.1 Characteristics
Services
The current version of the CP 342-5/342-5 FO supports the following
communication services:
SPROFIBUS-DP
–as DP master class 1 and class 2 (PROFIBUS-DP complying with EN
50170, DP Master)
–as DP slave (PROFIBUS DP complying with EN 50170, DP Slave)
Note
Note however, that the CP 342-5/342-5 FO can only be operated as DP master or
DP slave but not both. The DP mode can also be completely deselected.
SS5-compatible communication (SEND/RECEIVE interface) on FDL connections
of the following types:
–Specified FDL connections
–Free layer 2 connections (SDA, SDN)
– Broadcast
– Multicast
SS7 communication and PG/OP communication
–PG functions (including routing)
–Operator control and monitoring functions (HMI)
–Server for data exchange using communication FBs
The services of the CP 342-5/342-5 FO listed here can all be used at the same
time independent of each other.
PG Functions with
Supload / download of FM modules
SConfiguration / diagnostics
SRouting

ManualCP 342–5 / CP 342–5 FO
C79000–G8976–C146/01 7
Module Replacement without PG
The CP supports the option of storing the CP configuration data on the CPU. If you
use this option, you can replace a module without having to download the
configuration data from the programming device.
The configuration data are then stored in the load memory of the CPU. The
non-volatile storage of the configuration data on the CPU is guaranteed by battery
backup or by using an EPROM module card.
Configuration
For configuration, you require STEP 7, version V5.1 or higher; for FDL connections
and diagnostic functions, you require the NCM S7 for PROFIBUS optional package
supplied with STEP 7.
Note
If you modify the bus parameters in the configuration data, you can only download
the configuration data to the CP via MPI!

8ManualCP 342–5 / CP 342–5 FO
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1.2 Performance
1.2.1 Transmission Rates
The transmission rate is set with the SIMATIC STEP 7 configuration software. The
following values are permitted:
Table 1-1
Transmission rate CP 342-5 CP 342-5 FO
9.6 Kbps
19.2 Kbps
45.45 Kbps
93.75 Kbps
187.5 Kbps
500 Kbps
1.5 Mbps
3 Mbps
6 Mbps
12 Mbps
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
–
–
n
1.2.2 Basic Data of the DP Interface/DP Master
General Data
The following data are important if you want to operate the CP 342-5/342-5 FO as
a DP master:
Table 1-2
Feature Explanation / Values
Number of DP slaves that can be operated 124 maximum
Size of the DP data areas (total):
–DP input area
–DP output area 2160 bytes maximum 2160 bytes maximum
Size of the DP data areas (per DP slave):
–DP input area
–DP output area 244 bytes maximum 244 bytes maximum
Size of the DP diagnostic data: 240 bytes per DP slave

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Extended Master Functions
The CP 342-5/342-5 FO supports the following:
SSYNC/FREEZE (acyclic)
SShared input/output (acyclic)
SActivating/deactivating DP slaves
SModifications during runtime
–own PROFIBUS address
–DP mode (no DP, DP master, DP slave active/passive)
SHardware interrupts / diagnostic interrupts
Hardware and diagnostic interrupts do not need to be evaluated in the user
program. Hardware and diagnostic interrupts are acknowledged automatically
by the CP.
You can use single diagnostics to obtain interrupt information.
Reaction Times of a DP Master
To calculate the reaction times when operating the module as a DP master, the
runtime of the function blocks required for DP processing in the S7-300 CPU
(DP_SEND, DP_RECV) is the decisive factor.
Table 1-3
Components Explanation / Values (Guidelines)
Runtime on the CPU 314-1
(6ES7 314–1AE04–0AB0) Per DP_SEND block call:
S0,2 – 3,4 ms at 16 bytes
S0,2 – 5,9 ms at 240 bytes 1)
Per DP_RECV block call:
S0,3 – 3,5 ms at 16 bytes
S0,3 – 6,9 ms at 240 bytes 1)
1) At data lengths > 240 bytes: The data is transferred segmented. This then involves several block calls.
Note
The reaction times listed above are only intended as a guideline and only apply to
a single-master configuration when no other services (for example PG functions)
are processed on the CP.

10 ManualCP 342–5 / CP 342–5 FO
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1.2.3 Basic Data of the DP Interface / DP Slave
The following characteristics are important for successful data transfer to a DP
slave:
Table 1-4
Feature Explanation / Values
Device database file (*.GSD) File name:
CP 342-5: SIEM8093.GSD
CP 342-5 FO: SIEM8095.GSD
You can obtain device database files as follows:
SBy modem from the mailbox in the Interface Center, Fürth
Tel. [phone] (from outside Germany [phone]
SOn the Internet
http.\\www.ad.siemens.de under “Support, Training and
Service...Customer Support, Downloads”
Vendor ID CP 342-5: 8093H
CP 342-5 FO: 8095H
Size of the DP data areas:
–DP input area
–DP output area 240 bytes maximum 240 bytes maximum
Min. slave interval 2 ms
SYNC / FREEZE not supported
User parameter assignment data 3 bytes; value: 00 00 00 (fixed)
User diagnostic data 0 bytes
Reaction Times of a DP Slave
To calculate the reaction times when operating the module as a DP slave, the
runtime of the function blocks required for DP processing in the S7-300 CPU
(DP_SEND, DP_RECV) is the decisive factor.
Table 1-5
Components Explanation / Values
Runtime on the CPU 314-1
(6ES7 314–1AE04–0AB0) Per DP_SEND block:
S0,3 – 3,2 ms at 16 bytes
S0,2 – 5,7 ms at 240 bytes
Per DP_RECV block:
S0,3 – 3,5 ms at 16 bytes
S0,3 – 6,4 ms at 240 bytes

ManualCP 342–5 / CP 342–5 FO
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Note
The reaction times listed above are only intended as a guideline and only apply
when no other services (for example PG functions) are processed on the CP.
1.2.4 Data for S5-Compatible Communication (SEND/RECEIVE inter-
face) on FDL Connections:
The following data are important when operating FDL connections (Specified, Free
Layer 2 (SDA and SDN), Broadcast, Multicast):
Table 1-6
Feature Explanation / Values
Total number of FDL connections that can be
operated. maximum 16
Size of the transferable data area for FDL
connections maximum 240 bytes per specified FDL connection (for sending and receiving);
Free layer 2, broadcast and multicast:
Up to 236 bytes of user data can be transferred per
job. The job header occupies an additional 4 bytes.
Reaction Times of FDL Connections
To calculate the reaction times when operating with FDL connections, the runtime
of the function blocks required in the S7-300 CPU (AG_SEND, AG_RECV) is the
decisive factor.
Table 1-7
Components Explanation / Values
Runtime on the CPU 314-1
(6ES7 314–1AE04–0AB0) Per AG_SEND block:
S0,2 – 3,2 ms at 16 bytes
S0,2 – 5,7 ms at 240 bytes
Per AG_RECV block:
S0,2 – 3,5 ms at 16 bytes
S0,3 – 6,4 ms at 240 bytes

12 ManualCP 342–5 / CP 342–5 FO
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1.2.5 Basic Data for S7 Communication
The following characteristic data are important for operating S7 connections:
Table 1-8
Feature Explanation / Values
Number of S7 connections that can be operated 16 maximum 1)
1)The actualnumberof S7 connectionsthatcan be operateddependson the CPU typeyou are using. There
are further restrictions if you operate in mixed mode. Refer to Section 1.2.6 for more information.
1.2.6 Using Parallel Communications Services (Multiprotocol Opera-
tion)
Performance
If you want to use the available communications services at the same time, there
are restrictions in terms of communication performance.
The following table shows the transmission rate for FDL connections dependent on
the following:
SThe frame length (number of bytes)
SThe number of connections
The values were measured when sending and receiving in direct succession (at a
transmission rate of 1.5 Mbps, bus profile universal, two stations, mode “no DP”).
Table 1-9 Number of FDL Frames per Second
Number of
connections
Frame length
1 4 8 16
1 byte 77 / s 92 / s 92 / s 92 / s
100 bytes 73 / s 88 / s 88 / s 88 / s
240 bytes 67 / s 82 / s 83 / s 84 / s
Note
Recommendation: In the mixed mode –DP + FDL + S7 functions –a delay time
should be selected.

ManualCP 342–5 / CP 342–5 FO
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Number of Connections in Mixed Mode
If you use a connection configuration involving the maximum number of FDL
connections (16) and the use of DP at the same time, the maximum number of S7
connections reduces from 16 to 12.

14 ManualCP 342–5 / CP 342–5 FO
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1.3 Displaysand Mode Selector
LED Display of the CP Mode
The four LEDs on the front panel provide information about the mode of the CP
coded as shown below:
Table 1-10
SF (red) BUSF (red) RUN
(green) STOP (yellow) CP Mode
Starting up (STOP–>RUN)
Running (RUN)
Stopping (RUN–>STOP)
Ready for firmware download (mode
active for 10 seconds)
Loading firmware
Waiting for firmware update (CP
currently has incomplete firmware)
Stopped (STOP)
Stopped (STOP)with error
Running (RUN) with problems on
PROFIBUS
Running (RUN) with error on DP slave(s)
Module fault or error/ system error
Key: on off flashing
Note
Refer to the NCM S7 for PROFIBUS /2/ manual for detailed information about
operating modes.

ManualCP 342–5 / CP 342–5 FO
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Controlling the Operating Mode
There are different ways in which you can control the operating mode of the
CP 342-5/342-5 FO, as follows:
SUsing the mode selector
SUsing the NCM S7 for PROFIBUS configuration software
SSIMATIC Manager in STEP 7
To be able to control the CP mode from STEP 7 / NCM S7 for PROFIBUS, the
mode selector must be set to RUN.
Mode Selector
You can set the following operating modes with the mode selector:
SSwitch from STOP to RUN:
The CP enters configured and/or loaded data in the work memory and changes
to the RUN mode.
SSwitch from RUN to STOP:
The CP changes to the STOP mode. Established connections (FDL and S7
connections) are terminated.
This affects DP operation as follows:
–DP slave mode: the CP is no longer involved in data transfer.
–DP master mode: the mode is “OFFLINE”.
In the STOP mode, it is possible to configure the CP 342-5/342-5 FO and run
diagnostic functions.
Note
Refer to the manual /2/ for detailed information about downloading a database to
the CP.

16 ManualCP 342–5 / CP 342–5 FO
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2 Compatibility – Replacing older Modules
Replacing Modules
The table below describes the steps involved when replacing an older module with
one of the modules described here:
Table 1-11
Previously Used Module Steps in Configuration
6GK7 342-5DA00-0XE0 Supply the new module with the adapted configuration as described
below:
1. In STEP 7 / HW Config, replace the previously configured CP
342-5 with the new module (you will find this in the hardware
catalog).
2. Save, compile and download the configuration data to the CPU or
CP again.
6GK7 342-5DA01-0XE0 Case a: Unchanged configuration
If you do not require any extension of the functionality provided by
the previous CP (such as amounts of data), you do not need to make
any changes in the configuration.
When commissioning, you then only need to remember the following
difference:
SIf you selected the option of storing the configuration data of the
CP you are replacing on the CPU, the configuration data will be
downloaded to the CP from the CPU automatically when the CP
starts up.
SOtherwise, download the configuration data again to the CP from
your programming device/PC.
Case b: Adapted configuration
If you want to use the extended functionality of the new CP, follow the
steps outlined below:
1. Use the new FCs (version 3.0 or higher; see also page 21) in
your user program.
2. In STEP 7 / HW Config, replace the previously configured CP
342-5 with the new module (you will find this in the hardware
catalog).
3. Extend the configuration according to your requirements, for
example in the configured connections.
4. Save, compile and download the configuration data to the CPU
and CP again.

ManualCP 342–5 / CP 342–5 FO
C79000–G8976–C146/01 17
Information in the Online Help and Documentation regarding NCM S7 for
PROFIBUS
The additional information “for newer modules”in the STEP 7 / NCM online help
and in the NCM S7 for PROFIBUS manual applies to the CP described here. The
symbol shown here is used to indicated the relevant passages.
Note on Installation
If you cannot close the slot gap resulting from replacing an older module by shifting
the other modules, you must insert a dummy module (6ES7 370-0AA01-0AA0).
Compatibility
The CP 342-5/342-5 FO behaves differently from its predecessors in several ways.
Remember that this affects your user program. The following table provides an
overview:
Table 1-12 Changed Behavior
Topic Previously New
1. DPSTATUS output parameter in
FC DP_RECV
DP master mode: Bit 6: indicated “overflow of
received data”Bit 6: is no longer set
DP slave mode: Bit 3: indicated “no frame from
DP master within watchdog
time”
Bit 3: is no longer set
Bit 4: indicated “overflow of DP
data” Bit 4: is no longer set
2. DP modes A distinction was made
between STOP and OFFLINE. The STOP mode is represented by the OFFLINE mode.
3. Setting the current DP mode –is supported –In the version of the CP 342-5
described here, the following
job parameters are not suppor-
ted for FC DP_CTRL with
CTYPE 4:
SRUN with AUTOCLEAR
SRUN without AUTOCLEAR
4. Cyclic reading of the
input/output data using FC
DP_CTRL 1)
–supported In the version of the CP 342-5
described here, the following
services of FC DP_CTRL are
not supported:
CTYPE = 7
CTYPE = 8
These job types are rejected
with the code 8311H.

18 ManualCP 342–5 / CP 342–5 FO
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Table 1-12 Changed Behavior, continued
Topic NewPreviously
5. Triggering cyclic global control
with FC DP_CTRL 1) –supported DP master mode:
In the version of the CP 342-5
described here, the following
services of FC DP_CTRL are
not supported:
CTYPE = 1
These job types are rejected
with the code 8311H.
6. Triggering acyclic global control
with the CLEAR job or with FC
DP_CTRL 1)
–supported DP master mode:
In the version of the CP 342-5
described here, the following
services of FC DP_CTRL are
not supported:
CTYPE = 0 command mode =
CLEAR
These job types are rejected
with the code 8318H.
7. Triggering acyclic global control
for group 0 using FC DP_CTRL
1)
–supported DP master mode:
In the version of the CP 342-5
described here, the following
services of FC DP_CTRL are
not supported:
CTYPE = 0 group select = 0
These job types are rejected
with the code 8318H.
8. Consistency in data transfer
between CP and user program Maximum DP data area:
S240 bytes in the DP master
mode
S86 bytes in the DP slave
mode
Maximum DP data area:
S2160 bytes in the DP
master mode
S240 bytes in the DP slave
mode
SYou will find further information on consistency following this table
9. FCs for DP mode Depending on the
configuration, the older FC
types (FC91 to 94) can be used
alongside the new FC version
(FC1 to 4).
SYou will find further information on the FCs following this table
10. FCs: Evaluate general proper-
ties and codes on the call inter-
face
Description in the online help or
in the NCM S7 for PROFIBUS
manual
The additional information “for
newer modules”applies to the
CP described here.
The passages are highlighted
by this symbol:

Manual CP 342–5 / CP 342–5 FO
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Table 1-12 Changed Behavior, continued
Topic NewPreviously
11. Deterministic sending/receiving
of data –coordination between
CPU and CP/PROFIBUS
In the cyclic DP mode, the job
confirmation on the FC
interface contains the
confirmation of the transfer to
PROFIBUS.
In the cyclic DP mode, the
execution cycle on the CPU is
independent of the cycle on the
CP.
Sending data: The confirmation
of the job does not include
confirmation of the transfer to
PROFIBUS that has already
taken place.
Receiving data: It is possible
that the same data is received
more than once.
12. Jobs with DP_SEND and
DP_RECV 1) DP slave mode:
To trigger job processing, the
FCs DP_SEND and DP_RECV
must be activated at least once.
DP master mode:
To trigger reception, FC
DP_RECV must be activated at
least once.
Depending on the use, job
processing can be triggered
simply by activating FC
DP_SEND or DP_RECV.
In the DP master mode, at least
one of the two FCs must be
activated once.
13. Receive buffer not long enough
for AG_RECV If the receive buffer is too short, data are received up to the size
of the buffer.
The call is acknowledged with
error code 8185H.
If the receive buffer is too short,
no data are received.
The call is acknowledged with
error code 80B1H.
14. Responder functionality of the
DP master (class 1);
DP master (class 2) sends jobs
to DP master (class 1)
Functions:
S“DDLM_GET_Master_Diag”
S“DDLM_Act_Param”
–supported by DP master as
responder ––DP master without responder
functionality –
1) see also /2/ in the chapter on FC blocks and the STEP 7 online help on FCs;

20 ManualCP 342–5 / CP 342–5 FO
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Note on 8. : Consistency in data transfer between CP and user program
Depending on the response in the user program, you can assume different areas
as consistent data areas on the transfer interface between the CP and user
program.
Note
Please note the information on programming FCs in the online help on the FCs
and in the manual /2/.
SVariant 1: NDR bit is evaluated on the FC interface
You can assume a consistency over the entire DP data area used.
SVariant 2: NDR bit is not evaluated on the FC interface
You can assume a data consistency in a contiguous, non overlapping 32-byte
area.
(“Non overlapping”means that 32-byte areas are counted starting from base
address “0” of the relevant DP data area.)
Table 1-13 Consistency in the DP Master Mode
Data Access in User Program Maximum Area with Data Consistency
Variant 1 2160 bytes
Variant 2 32 bytes
Table 1-14 Consistency in the DP Slave Mode
Data Access in User Program Maximum Area with Data Consistency
Variant 1 240 bytes
Variant 2 32 bytes
Note on 9. :FCs for the DP mode
New FCs are supplied with STEP 7 V5.1 for the CP 342-5 described here. The
following table shows how to use these new FC versions and the older FC versions
for the available modules: