Siemens CP 443-5 Extended User manual

PROFIBUS interface
(9-pin D-sub female
connector)
Mode selector
Status and fault LEDs
SIMATIC NET
S7-CPs for PROFIBUS
Manual Part B4
CP 443-5 Extended for PROFIBUS
6GK7 443-5DX04-0XE0 Version 1 or higher (Firmware Version V6.1 or higher)
for SIMATIC S7-400 / S7-400H

Notes on the Product
B4-2 CP 443-5 Extended for PROFIBUS / Manual Part B4
Release 6/2005
C79000-G8976-C162-06
Notes on the Product
Note
All notes in the product information bulletin that is supplied with this product are
valid and must be observed.
Compatibility with the Previous Version
Note
Make sure that you read the information regarding extended functionality and
restrictions in Chapter 6 of this manual!

B4-3
CP 443-5 Extended for PROFIBUS / Manual Part B4
Release 6/2005
C79000-G8976-C162-06
Contents
Contents - Part A
PROFIBUS CPs - General Information See General Part. . . . . . . . . . . . . .
Note
Please remember that Part A of the manual also belongs to the description of the
CP. Among other things, it contains explanations of the safety notices, the
references to literature, and general information that applies to all S7 CPs for
PROFIBUS.
You can also obtain the current Part A from the Internet:
http://www4.ad.siemens.de/view/cs/de/1158693
Contents - Part B4
1 Properties / Services B4-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 Requirements for Use B4-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.1 Use with the Current CPU Types B4-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2 Converting older Systems B4-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3 Installation and Commissioning B4-13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4 Displays and Mode Selector B4-15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5 Performance Data B4-17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.1 Supported Transmission Rates B4-17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.2 Characteristics of the DP Interface B4-17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.3 Characteristics of S5-compatible Communication (SEND/RECEIVE Interface)
over FDL Connections B4-19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.4 Characteristics of S7 Communication B4-20. . . . . . . . . . . . . . . . . . . . . . . . . . .
5.5 Parallel Use of Communications Services (Multiprotocol Operation) B4-20.
5.6 Time-of-day Synchronization B4-22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.7 Data Record Routing B4-23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.8 Use in Fault-tolerant Systems 1) B4-23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.9 Other Characteristics B4-24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6 Compatibility with the Previous Product B4-25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.1 Extended Functionality Compared with Previous Product: B4-25. . . . . . . . . .
6.2 Replacing Older Modules / Replacing Defective Modules B4-25. . . . . . . . . .
7 Technical Specifications B4-27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1 Properties / Services
B4-4 CP 443-5 Extended for PROFIBUS / Manual Part B4
Release 6/2005
C79000-G8976-C162-06
1 Properties / Services
Application
The CP 443-5 Extended communications processor is designed for use in a
SIMATIC S7-400 (standard) and S7-400H (fault-tolerant system) programmable
controller. It allows the S7-400 / S7-400H 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 PA slaves).
Services
The current version of the CP 443-5 Extended supports the following
communication services in the standard and H systems:
SPROFIBUS-DP with the following characteristics:
- DP master (class 1) (redundant operation in fault-tolerant system also
possible)
- Direct data exchange (DP slave to DP slave)
As a DP master, the CP 443-5 Extended is capable of enabling direct data
exchange for “its” DP slaves.
- SYNC /FREEZE (please refer to Tables 2-1 and 2-2)
The outputs or inputs can be synchronized from the within the user program
using system function SFC11.
- 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:
DPV1 functionality
(default in STEP 7) S7-compatible
DP master mode for:
SDP slaves complying with the
PROFIBUS DP-V0 and DPV1
standard
SSiemens DP slaves
(Refer to the information in Tables 2-1
and 2-2 on the required CPU)
DP master mode for:
SDP Slaves complying with the
PROFIBUS DP-V0 standard (DP
slaves complying with the DPV1
standard can only be used with
restricted functionality)
SSiemens DP slaves
(For more information on the topic of DPV1, refer to the STEP 7 / Hardware
Configuration online help)

1 Properties / Services
B4-5
CP 443-5 Extended for PROFIBUS / Manual Part B4
Release 6/2005
C79000-G8976-C162-06
- 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.
- Activate/deactivate DP slaves in the standard system
DP slaves can be activated and deactivated from the within the user
program using system function SFC12.
- Diagnostic Requests
As a DP master class 1, the CP 443-5 supports diagnostic requests of a DP
master class 2.
- Identifying the bus topology in a DP master system
As a DP master, the CP 443-5 Extended supports the measurement of the
PROFIBUS bus topology in a DP master system using a diagnostic repeater
(DP slave).
System function SFC103 in the user program can instruct diagnostic
repeaters to measure the PROFIBUS BUS topology in a DP master system.
When completed, the results of the measurements made by the diagnostic
data can then be read in and processed by the user program.
SS5-compatible communication (SEND/RECEIVE interface) on FDL
connections of the following types:
- specified FDL connections
- free layer 2 connections
- broadcast
- multicast

1 Properties / Services
B4-6 CP 443-5 Extended for PROFIBUS / Manual Part B4
Release 6/2005
C79000-G8976-C162-06
SS7 communication and PG/OP communication
- PG functions with upload / download 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)
- Client and server for data exchange on S7 connections via communications
function blocks (fault-tolerant S7 connections also possible)1)
- Download S7 connections and gateways in RUN.
STime-of-day synchronization via PROFIBUS
- The CP forwards time-of-day synchronization frames from the LAN to the
station (CPU = time slave) or from the station to the LAN (CPU= time
master) or this station is synchronized via a different LAN and the
time-of-day 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.
- Time-of-day status value (standard/daylight saving time switchover,
synchronization status)
SData record routing
You can use the CP as a router for data records intended for field devices (for
example PA slaves). One tool that creates such data records for assigning
parameters to field devices is SIMATIC PDM (Process Device Manager; see
also SIMATIC PDM documentation...).
The services of the CP 443-5 Extended module listed above can be used at the
same time.
1)
Blocks for S7 communication (see also STEP 7 online help or
“System Software for S7-300/400 System and Standard Functions” manual):
BSEND SFB 12
BRCV SFB 13
PUT SFB 14
GET SFB 15
USEND SFB 8
URCV SFB 9
START SFB 19
STOP SFB 20
RESUME SFB 21
STATUS SFB 22
USTATUS SFB 23
CONTROL SFC 62

1 Properties / Services
B4-7
CP 443-5 Extended for PROFIBUS / Manual Part B4
Release 6/2005
C79000-G8976-C162-06
Project engineering
To configure and use any functions, you require STEP 7 as of V5.3.
It is possible to configure over the MPI or LAN/PROFIBUS.
Programming - Using Blocks
For some communication services, there are “off-the-peg” blocks (FCs/FBs)
available that implement the interface in your STEP 7 user program. You will find a
detailed description of these blocks in the NCM S7 for PROFIBUS manuals.
Notice
We recommend that you always use the latest block versions for all module types.
You will find information on the latest block version and links to download the
current blocks in our Customer Support on the Internet:
http://www4.ad.siemens.de/view/cs/en/8797900
If you are using older block types, this recommendation only applies if you also
have the latest firmware version.
You will find further information and Internet addresses in the Preface of the
General Part of this manual.
Replacing Modules without a Programming Device
When installing the CP 443-5 Extended, the configuration data of the CP are
always stored in the CPU. Therefore replacing modules is possible without having
to download the configuration data from the PG.
The stored configuration data is protected from power outage by battery backup or
by plugging a flash memory card into the CPU.

2 Requirements for Use
B4-8 CP 443-5 Extended for PROFIBUS / Manual Part B4
Release 6/2005
C79000-G8976-C162-06
2 Requirements for Use
The CP 443-5 Extended V 6.1 described here is supported by all CPU operating
systems in the versions listed in Tables 2-1 and 2-2.
2.1 Use with the Current CPU Types
Limits and Conditions
To use the CP type described here, the following limits and constraints apply within
a rack:
SNumber of operable CPs: 14
SMax. number of external DP chains (CP as DP master) : 10
Notice
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
SPROFINET IO controllers (CP 443-1 Advanced) - maximum 4
SDP masters (CP 443-5 Extended) - maximum 10
SMulticomputing is supported (except with CiR and H systems)
System Environment
The CP 443-5 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
443-5 Extended V 6.1 with the various CPU types: The following characteristics
are listed:
SCPU type, order number and version
SOption of multicomputing
SThe number of CPs that can be operated with one CPU
SThe maximum number of external DP chains of an S7 station;
SThe 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).
SWhether the CPU supports SYNC/FREEZE functionality (SFC11) via the CP.
SWhether the CPU supports the activate / deactivate (SFC12) DP functionality
via the CP.

2 Requirements for Use
B4-9
CP 443-5 Extended for PROFIBUS / Manual Part B4
Release 6/2005
C79000-G8976-C162-06
SWhether the CPU supports the functionality for identifying the bus topology in a
DP master system (SFC103) via the CP.
SDPV1 functionality
SCiR functionality (DP slave / DP slot, configurable extension)
Notice
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 2-1 Use with the Current CPU Types
CPU Order Number of the
CPU
Firmware version
CPU:
6ES7... Number of AG-SEND or AG-RECV calls at
same time
SYNC/FREEZE functionality
DP-V1 functionality
CiR / HCiR functionality 1)
Activate / deactivate
DP slave
Identify bus
topology
CPU 412 ..412-1XF04-0AB0 As of V4. 24 /24 + + + + -
As of V4.1 24 /24 + + + + +
CPU 412-2 ..412-2XG04-0AB0 As of V4. 24 / 24 + + + + -
As of V4.1 24 / 24 + + + + +
CPU 414-2 ..414-2XG04-0AB0 As of V4. 24 / 24 + + + + -
As of V4.1 24 / 24 + + + + +
CPU 414-3 ..414-3XJ04-0AB0 As of V4. 24 / 24 + + + + -
As of V4.1 24 / 24 + + + + +
CPU414-4H ..414-4HJ04-0AB0 As of V4. 24 / 24 - + + - -
As of
V4.0.5 24 / 24 - + + - +
CPU 416-2 ..416-2XK04-0AB0 As of V4. 64 / 64 + + + + -
As of V4.1 64 / 64 + + + + +
CPU 416-3 ..416-3XL04-0AB0 As of V4. 64 / 64 + + + + -
As of V4.1 64 / 64 + + + + +
CPU 416F-2 ..416-2FK04-0AB0 As of V4. 64 / 64 + + + + -
As of V4.1 64 / 64 + + + + +

2 Requirements for Use
B4-10 CP 443-5 Extended for PROFIBUS / Manual Part B4
Release 6/2005
C79000-G8976-C162-06
Table 2-1 Use with the Current CPU Types, continued
CPU Firmware versionOrder Number of the
CPU:
6ES7...
CPU
Number of AG-SEND or AG-RECV calls at
same time
Order Number of the
CPU:
6ES7...
CPU
SYNC/FREEZE functionality
Order Number of the
CPU:
6ES7...
DP-V1 functionality
CiR / HCiR functionality 1)
Activate / deactivate
DP slave
Identify bus
topology
CPU417-4 ..417-4XL04-0AB0 As of V4. 64 / 64 + + + + -
As of V4.1 64 / 64 + + + + +
CPU417-4H ..417-4HL04-0AB0 As of V4. 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 CiR capable (the H-CPUs HCiR).

2 Requirements for Use
B4-11
CP 443-5 Extended for PROFIBUS / Manual Part B4
Release 6/2005
C79000-G8976-C162-06
2.2 Converting older Systems
The discontinued CPUs listed in Table 2-2 support the following functionality in
conjunction with the CP 443-5 Extended V 6.1:
SNo DPV1 functionality
SNo CiR functionality (DP slave, configurable expansion)
SNo identification of the bus topology by the user program
SMaximum number of external DP chains per station: 4
SNumber of operable CPs: 8
SMulticomputing
Table 2-2 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 -
128 KB 6ES7 414-2XG02-0AB0 2 or higher 12 / 12 +
CPU 414-2
384 KB
6ES7 414-2XJ00-0AB0 4 or higher 12 / 12 -
384 KB 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
08MB
6ES7 416-2XK00-0AB0 4 or higher 32 / 32 -
0.8 MB 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

2 Requirements for Use
B4-12 CP 443-5 Extended for PROFIBUS / Manual Part B4
Release 6/2005
C79000-G8976-C162-06
Table 2-3 Use with no longer available CPU Types - Part 2
CPU Order Number of the
CPU
Firmware version
CPU:
6ES7... Number of AG-SEND or AG-RECV calls at
same time
SYNC/FREEZE functionality
DP-V1 functionality
CiR / HCiR functionality 1)
Activate / deactivate
DP slave
Identify bus
topology
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 + + + + -
CPU414-4H ..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. 64 / 64 + + + + -
CPU417-4 ..417-4XL00-0AB0 As of V3.1 64 / 64 + + + + -
CPU417-4H ..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 CiR capable (the H-CPUs HCiR).

3 Installation and Commissioning
B4-13
CP 443-5 Extended for PROFIBUS / Manual Part B4
Release 6/2005
C79000-G8976-C162-06
3 Installation and Commissioning
!Caution
The CP 443-5 Extended must not be plugged in or removed when the power is
connected.
If you do remove or insert the CP while it is powered on, the CPU changes to
STOP; this does not cause damage to the CP. Afterwards, you must turn the
power for the central rack off and on again.
Procedure / Steps
Step Explanation / Meaning
1. Insert the CP 443-5
Extended The CP 443-5 Extended can be operated in the following racks:
SCentral rack CR2, CR3
SUniversal rack UR1 UR2 or UR2H
as the central
or expansion rack with rack no. 1-6 (only possible if there is no DP
operation).
The CP 443-5 Extended cannot be used in an ER1 or ER2 expansion rack.
Suitable slots in the rack:
With the exception of the slots reserved for the power supply and IM-R, the
CP 443-5 Extended can be inserted in all slots with a P and K bus interface
(in the central or in an expansion rack no. 1-6).
Notice
When you are using PROFIBUS-DP, the module must only be operated in the
central rack!
When using the universal rack as an extension rack, you require an IM with a
communication bus link!
Step Explanation / Meaning
2. Attachment to
PROFIBUS Note the information in the General part of this manual.

3 Installation and Commissioning
B4-14 CP 443-5 Extended for PROFIBUS / Manual Part B4
Release 6/2005
C79000-G8976-C162-06
Step Explanation / Meaning
3. Configuration Depending on the communication services being used, configuration involves
the following steps:
SNode initialization
This is necessary in all situations. This assigns a PROFIBUS address
and bus parameters to the PROFIBUS CP.
SConfiguring connections:
This is necessary when using the communication services, S7 functions
and FDL connections (SEND/RECEIVE interface).
SDP configuration
This is necessary when the DP mode is used.
For details, see /2/, General Part.
4. PG/PC Attachment
for Configuration You can connect the PG when configuring the CP as follows:
Svia MPI
Svia LAN / PROFIBUS
The CP 443-5 Extended must already have a PROFIBUS address.
For details, see /2/, General Part.

4 Displays and Mode Selector
B4-15
CP 443-5 Extended for PROFIBUS / Manual Part B4
Release 6/2005
C79000-G8976-C162-06
4 Displays and Mode Selector
LED Display of the Operating Status of the CP
INTF (red)
EXTF (red)
BUSF (red)
RUN (green)
STOP (yellow)
Front
panel:
The different combinations of the five LEDs on the front panel indicate the status of
the CP:
Table 4-1
INTF LED EXTF LED BUSF LED RUN LED STOP LED CP Operating Status
Starting up (STOP->RUN)
Running (RUN)
Stopping (RUN->STOP)
Stopped (STOP)
STOP with internal error or
memory reset.
Waiting for firmware update
(duration 10 seconds after power
on)
Waiting for firmware update (CP
currently has an incomplete
firmware version).
SDownload in RUN active / CiR
SRUN with internal error (for
example, bad configuration
data)
PROFIBUS bus errors
RUN; however problems on DP
chain (DP slave not in data transfer
or not accessible)
RUN; however problems on DP
chain (faulty module in DP slave).
Module fault / system error
Legend: on off flashing Field gray: undefined / any

4 Displays and Mode Selector
B4-16 CP 443-5 Extended for PROFIBUS / Manual Part B4
Release 6/2005
C79000-G8976-C162-06
Controlling the Operating Status
There are different ways in which you can control the status of the CP 443-5
Extended, as follows:
SMode selector
SConfiguration software NCM S7 Diagnostics
SSIMATIC Manager in STEP 7
To control the status from STEP 7 / NCM S7, the mode selector must be set to
RUN.
Mode Selector
With the mode selector, you can set the following operating statuses:
SSwitch from STOP to RUN:
The CP reads the configured and/or modified data into the work memory and
then changes to the RUN mode.
SSwitch from RUN to STOP:
The CP changes to STOP with the following results:
- Established connections (FDL connections, configured, and unconfigured S7
connections) are terminated
- DP slaves are taken out of data transfer
- Data record routing is deactivated
In the STOP mode
- Configuration and diagnostics are possible
- The time of day is distributed

5 Performance Data
B4-17
CP 443-5 Extended for PROFIBUS / Manual Part B4
Release 6/2005
C79000-G8976-C162-06
5 Performance Data
5.1 Supported Transmission Rates
The transmission rate is set with the SIMATIC STEP 7 configuration software. For
the permitted rates, refer to Table 7-1 in Section 7
5.2 Characteristics of the DP Interface
No special FBs or FCs are necessary for the DP mode. The interfacing to the
distributed peripheral I/O is by direct I/O access or using SFCs/SFBs of the CPU
(see /11/).
Table 5-1
Characteristic Explanation / Values
Number of DP slaves that can be operated 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
Diagnostic Requests
As a DP master class 1, the CP 443-5 supports diagnostic requests of a DP
master class 2.
Note
In some situations, it is necessary to increase the default value for the startup
parameter ”Monitoring time for transfer of parameters to modules” in the
Properties dialog of the CPU:
SWhen there is a large number of modules (DP slaves) configured that can be
assigned parameters;
SWhen a high value is configured for the constant bus cycle time in the network
properties of the PROFIBUS DP chain.

5 Performance Data
B4-18 CP 443-5 Extended for PROFIBUS / Manual Part B4
Release 6/2005
C79000-G8976-C162-06
CiR Functionality (see also function manual “Modifying the System during Operation
via CiR” Siemens AG /14/)
The numbers of connections etc. shown in Table 5-1 also apply in the case of a
configured DP slave expansion (CiR functionality) to the entire DP master system.
If you specify the properties of a CiR object in the DP master system of the
CP 443-5 Extended in STEP 7, these values are included in checks performed by
STEP 7.
The configurable properties relate to:
SThe number of DP slaves and modules you can insert in a DP slave
SThe number of input and output bytes that can still be configured in RUN.

5 Performance Data
B4-19
CP 443-5 Extended for PROFIBUS / Manual Part B4
Release 6/2005
C79000-G8976-C162-06
5.3 Characteristics of S5-compatible Communication
(SEND/RECEIVE Interface) over FDL Connections
The following information is important for operating FDL connections (specified,
free layer 2 (SDA and SDN), broadcast, multicast):
Table 5-2
Characteristic Explanation / Values
Total number of FDL connections that can be
operated. 32 maximum
Size of the transferable data area on FDL
connections 1-240 bytes maximum per specified FDL connection (for sending and receiving)
Free layer 2, broadcast and multicast:
Per job up to 236 bytes of user data can be
transferred. The job header requires an additional 4
bytes.
Cycle Load Time due to FDL Connections
The cycle load time for FDL connections is largely dependent on the time required
to execute the function blocks (AG-SEND, AG-RECV) on the S7-400 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
2-1).
Table 5-3
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

5 Performance Data
B4-20 CP 443-5 Extended for PROFIBUS / Manual Part B4
Release 6/2005
C79000-G8976-C162-06
5.4 Characteristics of S7 Communication
The following data are important for operating S7 connections:
Table 5-4
Characteristic Explanation / Values
Number of S7 connections that can be
operated via PROFIBUS Maximum 48
(The value depends on the S7-400 CPU being used.)
5.5 Parallel Use of Communications Services (Multiprotocol
Operation)
If you use the available communication services at the same time, certain
restrictions result in terms of the communications performance.
To illustrate the relationship between the connection types, the DP mode, and
configured connections, the following values apply to the typical configurations.
Table 5-5
Connection Type Number of Connections With the DP Configuration
FDL connections 32 No DP
32 with DP mode
S7 connections 48 No DP
48 with DP mode
FDL and S7 connections 1) 59 No DP
54 with DP mode
1) one additional 1 S7 connection can be set up online (for example for routing)
Note
If PG or HMI functions or data record routing are used, a suitable number of S7
connections must be reserved during configuration!