Siemens CP 343-5 Manuale utente

SIMATIC NET

S7–CPs for PROFIBUS

Manual Part B2

CP 343-5

6GK7 343-5FA01-0XE0 version 2 and higher (firmware version V4.1 and higher)

for SIMATIC S7–300 / C7–300

Mode selector

Status and

fault LEDs

Connection for power supply

and functional ground

(9-pin

sub-D female

connector)

CP 343-5

Notes on the Product

B2–2 CP 343-5 for PROFIBUS / Manual Part B2

Release 11/2002

C79000-G8976-C160-02

Notes on the Product

Note

All instructions in the product information bulletin supplied with this product are

valid and must be adhered to.

Compatibility with the Previous Version

Note

Due to the enhanced functionality and restrictions, pay particular attention to

the notes in Chapter 5 of this manual.

B2–3

CP 343-5 for PROFIBUS / Manual Part B2

Release 11/2002

C79000-G8976-C160-02

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

CPs. Among other things, this includes an explanation of the safety, related

notices and other information that applies to all S7 CPs for Industrial Ethernet.

You can also obtain this general section from the Internet:

http://www4.ad.siemens.de/view/cs/de/8774037

Contents – Part B2

1 Features / Services B2–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2 Installation and Commissioning B2–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3 Displays and Mode Selector B2–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4 Performance Data B2–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.1 Supported Transmission Rates B2–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.2 Characteristics of FMS Connections B2–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.3 Characteristics of S5-compatible Communication

(SEND/RECEIVE Interface) on FDL Connections B2–11. . . . . . . . . . . . . . . . . . . .

4.4 Characteristics of S7 Communication B2–12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.5 Parallel Use of Communication Services (Multiprotocol Mode) B2–13. . . . . . . . .

5 Compatibility with the Previous Product B2–14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5.1 Extended functionality Compared with Previous Product B2–14. . . . . . . . . . . . . .

5.2 Replacing Older Modules / Replacing Defective Modules B2–15. . . . . . . . . . . . .

6 Technical Specifications B2–17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Features / Services

B2–4 CP 343-5 for PROFIBUS / Manual Part B2

Release 11/2002

C79000-G8976-C160-02

Features / Services

Application

The CP 343-5 communications processor is designed for operation in a SIMATIC

S7-300 / C7-300 programmable logic controller. It allows the S7-300 / C7-300 to be

attached to a PROFIBUS fieldbus system.

Services

The current version of the CP 343-5 supports the following communication

services:

SPROFIBUS–FMS (complying with EN 50170, FMS client and server

functionality)

as FMS master for the following types of connection:

– MMAC: Master–master acyclic

– MSAC: Master–slave acyclic

– MSAC_SI: Master–slave acyclic with slave initiative

– MSCY: Master slave cyclic

– BRCT (broadcast): Sending to all FMS stations

SS7 communication and PG/OP communication

– PG functions with upload / download of FM modules, configuration /

diagnostics and routing

– operator control and monitoring functions (HMI)

– server for data exchange on one-sided configured connections without

communication blocks in the S7 station

SS5–compatible communication (SEND/RECEIVE interface) over FDL

connections of the following type:

– specified FDL connections

– Free layer 2 connections (SDA, SDN)

– Broadcast

– Multicast

The CP 343-5 services mentioned above can be used at the same time

independently from one another.

Configuring

STEP 7 from version V5.1 SP3 and higher, and the installation of the NCM for

PROFIBUS optional package, delivered with STEP 7, are necessary for

configuration.

Features / Services

B2–5

CP 343-5 for PROFIBUS / Manual Part B2

Release 11/2002

C79000-G8976-C160-02

The module can be configured via the MPI or LAN/PROFIBUS.

Note

If you change the bus parameters in the configuration data, you can only download

these configuration data to the CP via the MPI.

Programming – Using Blocks

”Off–the–peg” blocks (FCs/FBs) form the interface in your STEP 7 user program to

some of the communication services available with the PROFIBUS CP. 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 a Module without a Programming Device

The CP supports the option of storing the configuration data of the CP in the CPU.

If you use this option, you can replace the module without having to reload the

configuration data from the programming device.

The configuration data are then stored in the load memory of the CPU. The stored

configuration data are protected from power outage by battery backup or by

plugging an EPROM card into the CPU.

Installation and Commissioning

B2–6 CP 343-5 for PROFIBUS / Manual Part B2

Release 11/2002

C79000-G8976-C160-02

Installation and Commissioning

Procedure / Steps

Table 2-1

Step Comments

1. Install the CP on the S7 standard rail.

2. Establish the connection to the backplane bus

using the enclosed bus connector.

You can use slots 4 to 11 in racks 0 to 3 for the CP

(connected by IM 360/361).

Proceed as explained in the sections on installation

and wiring, described in detail in /1/ .

Note

The CP cannot be used in an expansion rack connected by an IM 365! Reason: The IM 365 does not

connect the required communication bus through to the expansion rack.

3. Connect the CP to the power supply. To wire up the power supply and CPU, follow the

detailed instructions in /1/.

Notes

SThe CPU, CP and IM (if used) must be connected to the same power supply.

SOnly wire up the S7-300 / C7-300 with the power switched off!

SWhen shipped, the CP has a jumper inserted between the M terminals and the functional ground. If

you want to ground the reference potential, do not remove the jumper between the M terminals and

functional ground (see also /1/ particularly the sections on installing an S7-300 with a grounded

reference potential and installing an S7-300 with an ungrounded reference potential).

4. Connect the CP to PROFIBUS.

5. Commissioning is completed by downloading

the configuration data. For further details, especially regarding node

initialization, please refer to /2/.

Displays and Mode Selector

B2–7

CP 343-5 for PROFIBUS / Manual Part B2

Release 11/2002

C79000-G8976-C160-02

Displays and Mode Selector

LEDs Displaying the Status of the CP

The different combinations of the four LEDs on the front panel indicate the status

of the CP:

Table 3-1

(red) BUSF

(red) RUN

(green) STOP

(yellow) CP Operating Mode

Starting up (STOP->RUN)

Running (RUN)

Stopping (RUN->STOP)

Stopped (STOP)

Stopped (STOP)with errors

Running (RUN) with disturbances on

PROFIBUS

Ready to begin firmware download

(mode active for 10 seconds)

Downloading firmware

Invalid firmware downloaded

Waiting for firmware update (CP

contains incomplete firmware)

Module fault / system error

Key: on off flashing

Note

Read the explanations of the modes of operation in the NCM S7 for PROFIBUS

Manual /2/.

Displays and Mode Selector

B2–8 CP 343-5 for PROFIBUS / Manual Part B2

Release 11/2002

C79000-G8976-C160-02

Controlling the Operating Mode

There are different ways in which you can control the mode of the CP 343-5, as

follows:

SMode selector

SNCM S7 for PROFIBUS configuration software

SSIMATIC Manager in STEP 7

To control the mode from STEP 7 / NCM S7 for PROFIBUS, the mode selector

must be set to RUN.

Mode Selector

With the mode selector, you can set the following modes:

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 the STOP mode. Established connections (FDL, FMS and

S7 connections) are closed.

In the STOP mode, configuring and performing diagnostics on the CP 343-5 are

possible.

Note

Refer to the information on downloading the database to the CP in the manual /2/.

Performance Data

B2–9

CP 343-5 for PROFIBUS / Manual Part B2

Release 11/2002

C79000-G8976-C160-02

Performance Data

4.1 Supported Transmission Rates

The transmission rate is set with the SIMATIC STEP 7 configuration software. For

permitted values, see Table 6-1 in Section 6.

4.2 Characteristics of FMS Connections

The following data are important for operating FMS connections:

Table 4-1

Component Explanation / Values

Number of FMS connections Maximum of 16

User data length 237 bytes for READ

233 bytes for WRITE and REPORT

Configurable variables 256 server variables and 256 variable descriptions

that can be loaded from the partner. These can be

distributed as required on the maximum number of

configurable FMS connections. The value applies

to elementary data types or arrays of elementary

data types.

This value does not apply to complex data types

(STRUCT)! Note the information in the manual /2/

about using complex data types (STRUCT).

Cycle Load Caused by FMS Connections

When calculating the reaction times with FMS connections, the run time of the

function blocks (FBs) in the S7-300 CPU (314-1 see Table 4-2 ) is the decisive

factor.

The table below shows the cycle load resulting from the available FCs in ms. The

values were obtained using a data length of 230 bytes (array).

Table 4-2

Component /

FB FB

Number Job Trigger in ms

(first call) Job Active in ms

(next call) Job Complete without

Errors in ms (last call)

IDENT FB 2 1.8 0.2 5.5

READ FB 3 2.2 0.2 7.6

Performance Data

B2–10 CP 343-5 for PROFIBUS / Manual Part B2

Release 11/2002

C79000-G8976-C160-02

Table 4-2 , Fortsetzung

Component /

FB Job Complete without

Errors in ms (last call)

Job Active in ms

(next call)

Job Trigger in ms

(first call)

Number

REPORT FB 4 8.0 0.2 1.8

STATUS FB 5 1.8 0.2 2.2

WRITE FB 6 7.6 0.2 2.0

Further Notes on FMS

Please note the following:

In FMS server mode, the CP occupies an unconfigured communication bus

connection on the S7 CPU.

Note that the S7 CPU 314 supports a maximum of 4 (newer CPU types a

maximum of 12) unconfigured K bus connections! If, for example, you operate a

PG and an OP with the S7 CPU, two unconfigured K bus connections are still free.

Note

To allow module replacement without a PG, settings on the CPU must be

modified. Open the Properties dialog of the CPU in HW Config; in the “Monitoring

time for...” box in the “Startup” tab, check and, if necessary, increase the following

values:

– “Transfer of parameters to modules”

Depending on your system (station configuration), you may need to increase the

following parameter:

– “Ready message from modules”

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