Siemens SIMATIC NET CP 443-5 Extended User manual

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SIMATIC NET
S7-400 - PROFIBUS
CP 443-5 Extended
Manual
Manual Part B
11/2018
C79000
-G8976-C162-09
Preface
Application and functions
1
Displays and mode selector
2
Installation and
commissioning
3
Notes on operation
4
Technical specifications
5
Approvals
A
References
B

Siemens AG
Division Process Industries and Drives
Postfach 48 48
90026 NÜRNBERG
GERMANY
C79000-G8976-C162-09
Ⓟ
11/2018 Subject to change
Copyright © Siemens AG 2010 - 2018.
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 443-5 Extended
Manual, 11/2018, C79000-G8976-C162-09 3
Preface
①LED displays
②Mode selector
③PROFIBUS interface (9-pin D-sub socket)
Product name
This manual contains information on the following products:
●CP 443-5 Extended
Article number: 6GK7443-5DX05-0XE0
Hardware product version: 1
Firmware version: V7.1.8
Communications processor for connection of SIMATIC S7-400 / S7-400H to PROFIBUS
●CP 443-5 Extended
Article number: 6AG1443-5DX05-4XE0
Hardware product version: 1
Firmware version: V7.1.8
Communications processor for connection of SIMATIC S7-400 / S7-400H to PROFIBUS.

Preface
CP 443-5 Extended
4Manual, 11/2018, C79000-G8976-C162-09
Printed circuit board protected against dust and moisture by additional coating (conformal
coating).
Note
Names
•
In this document, the term "CP" is used at times instead of the full product name.
•
Instead of the full names of the configuration tools STEP 7 V5.5 and
STEP 7 Professional, the STEP 7 verwendet name is used.
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 Collection DVD that ships with every CP or on the
Internet at the following address:
Link: (https://support.industry.siemens.com/cs/ww/de/view/1158693)
●Manual Part B - manual "S7 CPs for PROFIBUS - CP 443-5 Extended" ( this manual)
Purpose of the manual
This manual describes the properties of this device and shows application examples.
The manual supports you when installing, connecting up and commissioning the device.
The required configuration steps for the device are described.
You will also find instructions for operation and information about the diagnostics options of
the device.
New in this edition
●New ATEX/IECEx approval
●Editorial revision
Note
Compatibility with previous versions
Read the information relating to enhanced functions and any restrictions that may apply in
the section
Compatibility with previous product (Page 24).
Replaced edition
Edition 11/2016

Preface
CP 443-5 Extended
Manual, 11/2018, C79000-G8976-C162-09 5
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/15679/man)
Sources of information and other documentation
You will find an overview of further reading and references in the Appendix of this manual.
License conditions
Note
Open source software
Read the license 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 condition
s on the same data medium as this manual under the
following file name:
OSS_CP4435_86.pdf
Security information
Siemens provides products and solutions with industrial security functions that support the
secure operation of plants, systems, machines and networks.
In order to protect plants, systems, machines and networks against cyber threats, it is
necessary to implement – and continuously maintain – a holistic, state-of-the-art industrial
security concept. Siemens’ products and solutions 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: (http://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: (http://www.siemens.com/industrialsecurity)

Preface
CP 443-5 Extended
6Manual, 11/2018, C79000-G8976-C162-09
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.
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
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 on the Internet at the following address:
Link: (https://support.industry.siemens.com/cs/ww/en/view/50305045)

CP 443-5 Extended
Manual, 11/2018, C79000-G8976-C162-09 7
Table of contents
Preface ................................................................................................................................................... 3
1 Application and functions ........................................................................................................................ 9
1.1 Application ................................................................................................................................9
1.2 Communication services...........................................................................................................9
1.3 Requirements for use..............................................................................................................12
1.3.1 Use with the current CPU types..............................................................................................12
1.3.2 Converting older systems .......................................................................................................14
1.3.3 Project engineering .................................................................................................................15
1.3.4 Programming ..........................................................................................................................16
1.4 Performance data ...................................................................................................................17
1.4.1 Transmission speeds supported.............................................................................................17
1.4.2 Characteristic data of the DP interface ...................................................................................17
1.4.3 Characteristic data of open communications services (SEND/RECEIVE interface) over
FDL connections .....................................................................................................................19
1.4.4 Characteristics of S7 communication .....................................................................................19
1.4.5 Parallel use of communications services (multiprotocol mode)..............................................20
1.4.6 Time-of-day synchronization...................................................................................................21
1.4.7 Data record routing .................................................................................................................22
1.4.8 Use in faulttolerant systems....................................................................................................22
1.4.9 Other characteristics ...............................................................................................................23
1.5 Compatibility with previous product ........................................................................................24
1.5.1 Extended functionality compared with previous product ........................................................24
1.5.2 Replacing older modules / module replacement ....................................................................25
2 Displays and mode selector .................................................................................................................. 27
3 Installation and commissioning.............................................................................................................. 29
3.1 Important notes on using the device.......................................................................................29
3.1.1 Notes on use in hazardous areas ...........................................................................................29
3.1.2 Notes on use in hazardous areas according to ATEX / IECEx ..............................................30
3.1.3 Notes on use in hazardous areas according to UL HazLoc ...................................................31
3.2 Installation and commissioning...............................................................................................31
4 Notes on operation................................................................................................................................ 33
4.1 General operation on PROFIBUS...........................................................................................33
4.2 Display "Existing channel error" in the diagnostics interrupt OB (OB82) ...............................34
4.3 Display of the the DP slave history .........................................................................................34
4.4 Other information available about the CP...............................................................................34
5 Technical specifications ........................................................................................................................ 35
A Approvals.............................................................................................................................................. 37

Table of contents
CP 443-5 Extended
8Manual, 11/2018, C79000-G8976-C162-09
B References ........................................................................................................................................... 41
B.1 On configuring and using the CP ........................................................................................... 41
B.2 On installing and commissioning the CP ............................................................................... 42
B.3 On programming .................................................................................................................... 43
Index .................................................................................................................................................... 45

CP 443-5 Extended
Manual, 11/2018, C79000-G8976-C162-09 9
Application and functions
1
1.1
Application
Automation system
The CP 4435 Extended communications processor is designed for use in a SIMATIC S7400
(standard) and S7400H (faulttolerant system) automation system. The CP 443-5 Extended
allows the S7400 / S7400H to be connected to a PROFIBUS fieldbus system.
You can use the CP as a router for data records intended for field devices (for example DP
slaves).
1.2
Communication services
Supported communications services
The current version of the CP 4435 Extended supports the following communication services
in the standard and H systems:
●
PROFIBUS DP with the following characteristics:
–DP master (class 1) (redundant operation in faulttolerant system also possible)
–Direct data exchange (DP slave to DP slave)
As a DP master, the CP 4435 Extended 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
SFC11.
(Refer to the information in sections Table 1-1 Use with the current CPU types
(Page 13) and Table 1-2 Use with no longer available CPU types - part 1 (Page 14))
–Constant bus cycle time (only in the standard system)
The ability to set a constant bus cycle time means that the DP master always starts
the DP bus cycle after the same interval.
–Selectable DP modes:

Application and functions
1.2 Communication services
CP 443-5 Extended
10 Manual, 11/2018, C79000-G8976-C162-09
DPV1 functionality
(default in STEP 7)
S7-compatible
DP master mode for
•DP slaves complying with the PROFIBUS DP-
V0 and DPV1 standard
•Siemens DP slaves
Refer to the information about the required CPU
in:
•Table 1-1 Use with the current CPU types
(Page 13)
•Table 1-3 Use with no longer available CPU
types - part 2 (Page 15)
DP master mode for
•DP Slaves complying with the PROFIBUS
DPV0 standard (DP slaves complying with the
DPV1 standard can only be used with re-
stricted functionality)
•Siemens DP slaves
(For more information on the topic of DPV1, refer to the STEP 7 online help)
●
CiR (Configuration in RUN) - in the standard system
By making a change to the configuration with CiR (Configuration in RUN), it is possible to
put a DP slave / DP slot extension into operation or take it out of operation when
necessary while the system is running.
In other words, you can configure and activate additional DP slaves or DP slots while the
S7 station is in RUN.
●
Enabling /disabling DP slave - in the standard system
DP slaves can be activated and deactivated by the user program using system function
SFC12.
●
Diagnostics requests
As a DP master (class 1), the CP 4435 supports diagnostics requests of a DP master
(class 2).
●
Getting the bus topology in a DP master system
The CP 443-5 Extended 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 SFC103 in the user program can instruct diagnostics repeaters to
measure the PROFIBUS BUS topology in a DP master system. When completed, the
results of the measurements made by the diagnostics repeater can then be read in and
processed by the user program.
●
Open communications services (SEND/RECEIVE interface) over FDL connections of the
following type:
–Specified FDL connections
–Free layer 2 connections
–Broadcast
–Multicast

Application and functions
1.2 Communication services
CP 443-5 Extended
Manual, 11/2018, C79000-G8976-C162-09 11
●
S7 communication and PG/OP communication
–PG functions with uploading / downloading of FM modules, configuration / diagnostics
and routing
Note on routing: Dynamic switchover to alternative paths (for example if there is a
problem on one of the possible transmission paths) is not supported.
–Operator control and monitoring functions (HMI)
–Download S7 connections and gateways in RUN.
–Client and server for data exchange on S7 connections using communications
function blocks (faulttolerant S7 connections also possible)
●
Timeofday synchronization via PROFIBUS
–The CP forwards timeofday synchronization frames from the LAN to the station (CPU
= time slave) or from the station to the LAN (CPU= time master).
Another option is for this station to be synchronized via a different LAN. The timeofday
synchronization frame must be forwarded over PROFIBUS for the synchronization of
further stations.
–The CP supports time stamping of distributed process signals in conjunction with the
IM 153.
–Timeofday status value (standard/daylight saving time switchover, synchronization
status).
●
Data record routing
You can use the CP as a router for data records intended for field devices (for example
DP slaves). SIMATIC PDM (Process Device Manager) is a tool that creates data records
of this type for assigning parameters to field devices.
The services of the CP 4435 Extended module listed above can be used independently at
the same time.
Replacing a module without a programming device
When installing the CP 4435 Extended, the configuration data of the CP is always stored in
the CPU. This means that replacing modules is possible without having to download the
configuration data from the PG.
Storage of the configuration data is protected from power failure by the battery backup or the
flash memory card in the CPU.
See also
Converting older systems (Page 14)

Application and functions
1.3 Requirements for use
CP 443-5 Extended
12 Manual, 11/2018, C79000-G8976-C162-09
1.3
Requirements for use
The CP 4435 Extended described here is supported by all CPU operating systems in the
versions listed in Tables 2-1 and 2-2 below.
1.3.1
Use with the current CPU types
Configuration limits
To use the CP type described here, the following limits and constraints apply within a rack:
●Number of operable CPs: 14
●Max. number of external DP lines (CP as DP master): 10
Note
The number CPs that can be operated as DP masters depends on the number of CP
443
-1 Advanced modules operated as PROFINET IO controllers in the S7-400 station. In
total, 10 CPs can be operated as:
•
PROFINET IO controllers (CP 443-1 Advanced) - maximum 4
•
DP masters (CP 443-5 Extended) - maximum 10
●Multicomputing is supported (except with CiR and H systems)
System environment
The CP 4435 Extended is supported by the S7-400 CPUs and CPU operating systems with
the order numbers and versions listed in the table below.
From the table, you can see which functionality is supported when you use the CP 4435
Extended V 6.1 with the various CPU types. The following characteristics are shown:
●CPU type, order number and version
●Option of multicomputing
●The number of AG_SEND or AG_RECV calls on the SEND/RECEIVE interface that can
be active at the same time (data exchange on FDL connections over PROFIBUS and
corresponding connections over Industrial Ethernet)
●CPU support for SYNC/FREEZE functionality (SFC11) via the CP
●CPU support of the "activate / deactivate DP functionality (SFC12)" via the CP
●CPU support of the functionality for "identifying the bus topology in a DP master system"
(SFC103) via the CP

Application and functions
1.3 Requirements for use
CP 443-5 Extended
Manual, 11/2018, C79000-G8976-C162-09 13
●DPV1 functionality
●CiR functionality (DP slave / DP slot, configurable extension)
Note
ET 200M devices that were assigned to SYNC/FREEZE groups
with STEP 7, must
not
have modules of the type FM or CP inserted.
Table 1- 1 Use with the current CPU types
CPU
Order number of
the CPU:
6ES7...
Firmware
version
Number of
AG_SEND or
AG_RECV calls at
same time
a = SYNC/FREEZE functionality
b = DP-V1 functionality
c = CiR / HCiR functionality 1)
d = enable / disable DP slaves
e = identify bus topology
a
b
c
d
e
CPU412 .. 412-1XF04-
0AB0
as of V4.0
24 /24
+
+
+
+
-
as of V4.1
24 /24
+
+
+
+
+
CPU412-2 ..412-2XG04-0AB0
as of V4.0
24 /24
+
+
+
+
-
as of V4.1
24 /24
+
+
+
+
+
CPU414-2 ..414-2XG04-0AB0
as of V4.0
24 /24
+
+
+
+
-
as of V4.1
24 /24
+
+
+
+
+
CPU414-3 ..414-3XJ04-0AB0
as of V4.0
24 /24
+
+
+
+
-
as of V4.1
24 /24
+
+
+
+
+
CPU414-4H ..414-4HJ04-0AB0
as of V4.0
24 /24
+
+
+
+
-
as of V4.0.5
24 /24
-
+
+
-
+
CPU416-2 ..416-2XK04-0AB0
as of V4.0
64 / 64
+
+
+
+
-
as of V4.1
64 / 64
+
+
+
+
+
CPU416-3 ..416-3XL04-0AB0
as of V4.0
64 / 64
+
+
+
+
-
as of V4.1
64 / 64
+
+
+
+
+
CPU416F-2 ..416-2FK04-0AB0
as of V4.0
64 / 64
+
+
+
+
-
as of V4.1
64 / 64
+
+
+
+
+
CPU417-4 ..417-4XL04-0AB0
as of V4.0
64 / 64
+
+
+
+
-
as of V4.1
64 / 64
+
+
+
+
+
CPU417-4H ..417-4HL04-0AB0 as of V4.0 64 / 64 - + + - -
as of V4.0.5
64 / 64
-
+
+
-
+
Legend:
+ => The characteristic is supported / the listed mode is possible
- => The characteristic is not supported / the listed mode is not possible
1)
All CPUs are capable of CiR (the H-CPUs HCiR).

Application and functions
1.3 Requirements for use
CP 443-5 Extended
14 Manual, 11/2018, C79000-G8976-C162-09
1.3.2
Converting older systems
In conjunction with the CP 443-5 Extended V 7.0, the functionality supported by the
discontinued CPU types listed in Table 2-2 is as follows:
●No DPV1 functionality
●No CiR functionality (DP slave, configurable extension)
●No identification of the bus topology by the user program
●Max. number of external DP lines per station: 4
●Number of operable CPs: 8
●Multicomputing
Table 1- 2 Use with no longer available CPU types - part 1
CPU
Order number
Version
Number of AG_SEND or
AG_RECV calls at same
time
SYNC / FREEZE
CPU 412
6ES7 412-1XF01-0AB0
2 or higher
12 / 12
-
6ES7 412-1XF02-0AB0 2 or higher 12 / 12 +
CPU 413
6ES7 413-1XG01-0AB0
2 or higher
12 / 12
-
6ES7 413-1XG02-0AB0
1 or higher
12 / 12
+
CPU 413-2
6ES7 413-2XG01-0AB0
2 or higher
12 / 12
-
6ES7 413-2XG02-0AB0
1 or higher
12 / 12
+
CPU 414-1
6ES7 414-1XG01-0AB0
2 or higher
12 / 12
-
6ES7 414-1XG02-0AB0
2 or higher
12 / 12
+
CPU 414-2
128 KB
6ES7 414-2XG01-0AB0
2 or higher
12 / 12
-
6ES7 414-2XG02-0AB0
2 or higher
12 / 12
+
CPU 414-2
384 KB
6ES7 414-2XJ00-0AB0
4 or higher
12 / 12
-
6ES7 414-2XJ01-0AB0
2 or higher
12 / 12
+
CPU 416-1
6ES7 416-1XJ01-0AB0
2 or higher
32 / 32
-
6ES7 416-1XJ02-0AB0
1 or higher
32 / 32
+
CPU 416-2
0.8 MB
6ES7 416-2XK00-0AB0
4 or higher
32 / 32
-
6ES7 416-2XK01-0AB0
1 or higher
32 / 32
+
CPU 416-2
1.6 MB
6ES7 416-2XL00-0AB0
4 or higher
32 / 32
-
6ES7 416-2XL01-0AB0
1 or higher
32 / 32
+
Legend:
+ => The characteristic is supported / the listed mode is possible
- The characteristic is not supported / the listed mode is not possible

Application and functions
1.3 Requirements for use
CP 443-5 Extended
Manual, 11/2018, C79000-G8976-C162-09 15
Table 1- 3 Use with no longer available CPU types - part 2
CPU
Order number of
the CPU:
6ES7...
Firmware
version
Number of
AG_SEND or
AG_RECV calls at
same time
a = SYNC/FREEZE functionality
b = DP-V1 functionality
c = CiR / HCiR functionality 1)
d = enable / disable DP slaves
e = identify bus topology
a
b
c
d
e
CPU 412
..412-1XF03-0AB0
as of V3.1
24 / 24
+
+
+
+
-
CPU 412-2
..412-2XG00-0AB0
as of V3.1
24 / 24
+
+
+
+
-
CPU 414-2 ..414-2XG03-0AB0 as of V3.1 24 / 24 + + + + -
CPU 414-3
..414-3XJ00-0AB0
as of V3.1
24 / 24
+
+
+
+
-
CPU 414-4H
..414-4HJ00-0AB0
as of V3.1
24 / 24
-
+
+
-
-
CPU 416-2
..416-2XK02-0AB0
as of V3.1
64 / 64
+
+
+
+
-
CPU 416-3
..416-3XL00-0AB0
as of V3.1
64 / 64
+
+
+
+
-
CPU 416F-2
..416-2FK02-0AB0
as of V4.0
64 / 64
+
+
+
+
-
CPU 417-4
..417-4XL00-0AB0
as of V3.1
64 / 64
+
+
+
+
-
CPU 417-4H
..417-4HL00-0AB0
as of V2.1
64 / 64
-
-
+
-
-
..417-4HL01-0AB0
as of V3.1
64 / 64
-
+
+
-
-
Legend:
+ => The characteristic is supported / the listed mode is possible
- => The characteristic is not supported / the listed mode is not possible
1) All CPUs are capable of CiR (the H-CPUs HCiR).
1.3.3
Project engineering
Configuration and downloading the configuration data
The following version of STEP 7 is required:
STEP 7 version
Functions of the CP
STEP 7 as of V5.5 SP1 The functional range of the following CP type can
be configured:
•6GK7443-
5DX05
-0XE0
•6GK7443-
5DX05
-0XE1 (conformal coating)
STEP 7 Professional V11 SP1 The functional range of the following CP type can
be configured:
•6GK7443-
5DX04
-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.

Application and functions
1.3 Requirements for use
CP 443-5 Extended
16 Manual, 11/2018, C79000-G8976-C162-09
Note
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!
1.3.4
Programming
Program blocks
For some communications services of the CP, there are preprogrammed program blocks
(FCs / FBs) available as the interface in your STEP 7 user program.
Refer to the documentation of the program blocks in the online help of STEP 7 or in the
manual "/7/ (Page 43)".
Note
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 at the following address:
Link: (
https://support.industry.siemens.com/cs/ww/en/ps/15677/pm)
With older module types, this recommendation assumes that you are using the latest
firmware version for the particular module type.
Program blocks for open communications services
Program block
Meaning
AG_SEND (FC5)
Send data
AG_RECV (FC6)
Receive data
AG_LSEND (FC50)
Send data
AG_LRECV (FC60)
Receive data
Program blocks for S7 communication
Program block
Meaning
USEND (SFB 8) / URCV (SFB 9)
Uncoordinated sending / receipt of data
BSEND (SFB 12) / BRCV (SFB 13)
Block-oriented sending / receipt of data
PUT (SFB 14) / GET (SFB 15) Write data to a remote CPU / read data from a
remote CPU

Application and functions
1.4 Performance data
CP 443-5 Extended
Manual, 11/2018, C79000-G8976-C162-09 17
Program block
Meaning
START (SFB 19) / STOP (SFB 20)
Run a warm restart / stop on a remote device.
RESUME (SFB 21) Run a hot restart on a remote device.
STATUS (SFB 22)
Query the device status of a remote partner.
USTATUS (SFB 23) Receive the status change of a remote device.
CONTROL (SFC 62) Query the status of the connection belonging to
an SFB instance.
For more information on the program blocks for S7 communication, see also STEP 7 online
help or the manual /8/ (Page 43))
1.4
Performance data
1.4.1
Transmission speeds supported
The transmission speed is set with the SIMATIC STEP 7 configuration software. For the
permitted values, refer to Table 7-1 in Section 7 (Page 35)
Note
Remember the cable length
The permitted cable length must be kept to depending on the transmission speed. Refer to
the information in
/4/ (Page 42)
1.4.2
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 (see /4/ (Page 42)).
Table 1- 4 General characteristic data of DP mode
Characteristic
Explanation / values
Number of operable DP slaves
125
Max. size of the input area of all DP slaves
4 Kbytes
Max. size of the output area of all DP slaves
4 Kbytes
Maximum number of inputs per DP slave
244 bytes
Maximum number of outputs per DP slave
244 bytes
Max. size of the consistent area for a module
128 bytes

Application and functions
1.4 Performance data
CP 443-5 Extended
18 Manual, 11/2018, C79000-G8976-C162-09
Diagnostics requests
As a DP master (class 1), the CP 4435 supports diagnostics requests of a DP master (class
2).
Note
Default value for the startup parameter "Monitoring time for transfer of parameters to
modules"
In some situations, it is necessary to increase the default value for the startup parameter
"Monitoring time for transfer of parameter
s to modules" in the Properties dialog 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
CiR functionality
The numbers of connections etc. shown in Table General characteristic data of DP mode
(Page 17) also apply to the entire DP master system if there is a configured DP slave
expansion (CiR functionality).
If you specify the properties of a CiR object in the DP master system of the CP 4435
Extended in STEP 7, these values are included in checks performed by STEP 7.
The configurable properties relate to:
●The number of DP slaves and modules you can insert in a DP slave
●The number of input and output bytes that can still be configured in RUN.
(see also manual /5/ (Page 42))
See also
Characteristic data of the DP interface (Page 17)

Application and functions
1.4 Performance data
CP 443-5 Extended
Manual, 11/2018, C79000-G8976-C162-09 19
1.4.3
Characteristic data of open communications services (SEND/RECEIVE
interface) over FDL connections
General characteristic data
The characteristic data is important when operating FDL connections (specified, free layer 2
(SDA and SDN), broadcast, multicast):
Table 1- 5 General characteristic data of open communications services
Characteristic
Explanation / values
Total number of FDL connections that can
be operated.
32 max.
Size of the transferable data area on FDL
connections.
1-240 bytes max. 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.
Cycle load time due to FDL connections
The calculation of the cycle load time for FDL connections is largely dependent on the time
required to execute the program blocks (AG_SEND, AG_RECV) on the S7400 CPU.
The following table lists the cycle load times of the available FCs in milliseconds. A
distinction is made between the statuses "job completed" and "job active". The entries relate
to the run time in the CPU 417 (6ES7 417-4XL04-0AB0 - see Table 1-1 Use with the current
CPU types (Page 13)).
Table 1- 6 Cycle load time
Job status
Job completed
Job active
Component / FC
min.
max.
min.
max.
AG_SEND
0.10 ms
0.11 ms
0.14 ms
0.16 ms
AG_RECV
0.13 ms
0.14 ms
0.12 ms
0.13 ms
1.4.4
Characteristics of S7 communication
General characteristic data
The following information is important when operating S7 connections:
Table 1- 7 General characteristics of S7 connections
Characteristic
Explanation / values
Number of S7 connections that can
be operated via PROFIBUS
48 max.
(The value depends on the S7400 CPU being used.)

Application and functions
1.4 Performance data
CP 443-5 Extended
20 Manual, 11/2018, C79000-G8976-C162-09
1.4.5
Parallel use of communications services (multiprotocol mode)
Performance
Using the various available communications services at the same time affects
communication performance.
To illustrate the relationship between the connection types, the DP mode, and configured
connections, the following values apply to the typical configurations:
Connection type
Number of connections
With the DP configuration
FDL connections
32
No DP mode
32 With DP mode
S7 connections
48
No DP mode
48
With DP mode
FDL and S7 connections 1)
59
No DP mode
54
With DP mode
1) one additional S7 connection can be set up online (for example for routing)
Note
PG or HMI functions or data record routing
If PG or HMI functions or data record routing are used, a suitable number of S7 connections
must be reserved during configuration!
Help provided by STEP 7
The number of connections on PROFIBUS shown in the table above can vary due to other
influencing factors. The STEP 7 configuration tool displays warnings and help messages as
soon as limit values are exceeded.
Scaling of services in the "mixed mode"
The DP delay time is used to scale cyclic DP communication and the other services (FDL
and S7 connections). A DP delay time of 0 seconds guarantees the fastest possible DP
update. By increasing the DP delay time, you create extra time on the CP for handling other
services.
Note
Recommendation for mixed mode - PROFIBUS DP along with communications functions
In mixed mode, a delay should be selected as follows: 1 ms at transmission speeds > 1.5
Mbps