Ashok Plc Net

8/22/2019 Ashok Plc Net

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PLC NET

V SIVAGANESH

LECTURER OF MECHATRONICSPSGTECH


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1-22

Communication Model :

Source Tx. DestinationRx.Transmission

System

Communication :

Exchange of Data between two parties


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3-22

Fundamentals Of Communication :

Communication Modes

Transmission Format

(Synchronous versus Asynchronous)

Data Coding

Open Systems Model

Points To Be Looked into ...


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4-22

Communication Modes

In any communications link between two devices, data

can either be sent in one of three commun. modes : Simplex

Half Duplex

Duplex

Simplex

Transmitter Receiver

Simplex

NOTE:There is no feedback

from Receiver.


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5-22

Half Duplex :

Half DuplexTransmitter

Receiver

Transmitter

Receiver

1. Data flows in both directions,only one direction at a time.2. Half duplex communications is provided by the RS-485.

3. Only one station can transmit or Receive at a time.

4. Protocol can be MPI, Profibus, MODBUS etc.


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6-22

Full Duplex :Full Duplex

Transmitter

Receiver

Receiver

Transmitter

1. Data flows in Bothdirections.2. Full duplexcommunications is provided by the RS-232C.

3. Bothstation can transmit or Receivesimultaneously.


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7-22

The asynchronous approach is the more basic one used by RS 232C .

Asynchronous Transmission :


Start Time

ClockClock

D0D1 D2 D3 D5D4 D7D6

Start Bit Stop Bit

ASCII Character

It operates at a lower speed.

An asynchronous system is one in which each character or byte is sent

within a frame.

The receiver does not start detection until it receives the first bit, known

as the start bit. The start bit is in the opposite voltage state to the idlevoltage and allows the receiver to synchronize to the bits following.


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8-22

A Typical asynchronous Transmission Frame Format :

DATA Parity Bit Stop BitStart Bit

Start Bit : Signals the start of the frame

Data : Usually 7 or 8 bits of data, but can be 5 or 6Parity Bit :Optional Error detection bitStop bits :Usually 1, 1.5 or 2 bits.


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9-22

Synchronous Transmission :


Clock

Sync Sync

Start Time

Data

Synchronous system uses a string of bits to synchronise the

receiver before the data is detected.

Synchronous systems detect bits by a change in voltage rather than

by reading an absolute value as with asynchronous systems..

This fomat is generally used for High Speed Transmission.

The Receiver and Transmitter are always synchronized.


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13-22

ProtocolAll communication partners involved in data transmission must

follow fixed rules for handling and implementing the data traffic.Such rules are called protocols.

Operating mode : Half-duplex or full-duplex mode

Initiative : Which communication partners can initiate the transmissionand under what conditions

Control characters : Which control characters are to be used for datatransmission

Character frame : Which character frames are to be used for datatransmission

Data backup : The data backup procedure to be used

Character delay time : The time period within which an incomingcharacter must be received

Transmission speed :The baud rate in bits/s

A protocol defines the following points:


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Basic Seven Layers and Their Specifications

14-22

7 Application

Provides application specific communication

services e.g.Read/Write ,Start/Stop

6 Presentation

Data presentation:Converts the standard

presentation format for the communication

system to a device specific format

5 SessionSynchronization: Opening, closing and

monitoring a session

4 TransportConnecting / disconnecting links, repeating

packets, sorting packets, packaging

3 NetworkAddressing other networks/ Optimum routing,

flow control.

2 Data LinkAccess techniques:Data block boundaries,error-free data transfer,error detection, error handling.

1 Physical

Physical aspects of data transfer, transmission

medium, baudrate,specification of the electrical,

mechanical and functional parameters of the

cable/bus


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15-22

Network Topology :

Line or Bus

Station 1 Station 2 Station 3

All stations on the N/W require only one interface

It has to be ensured that only one station is able to transmittsat a time and all other are permitted to listen.

It is necessary to define that when station has right to transmit.

this is defined in the access technique.


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16-22

Ring Station 1 Station 2 Station 3

Station 4 Station 5 Station 6

Permission to send also has to be controlled via bus access

technique.

Advantage :This type of ring is that each node can operateas a repeater so that large distance can be covered.

Disadvantage :Failure of node causes grater problem as compare

to line Structure.


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17-22

StarStation 1 Station 2 Station 3

** = Star Coupler

It controls the entire communication and if it fails, the

entire network usually fails with it.


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18-22

Tree Station 1 Station 2

Station 3R

R

Station 4 Station 5

= Repeater

= Repeater

It is mainly a chain of a number of line structures of diff. Length

and types.

To connect different types there can be converters like Routers,

Bridges and Gateways.


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20-22

Access Techniques:

Master

Slave 1 Slave 3Slave 2

Bus

The master directs the entire bus traffic. It sends data to the slaves

(polling) and gives the slaves the command to send.

Direct communication between slaves is usually not possible.The advantage of master/slave techniques is simple and efficient

bus control. This is why they are often used in field buses such

as PROFIBUS-DP.

Master/Slave


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1-8

DTE DCE DCE DTE

Physical Interface Physical Interface

Tx / Rx Tx / Rx

Data Communication Standards :

Types of transmission lines (Interface) in Data

Communication Systems :

Unbalanced

Balanced


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4-8

The RS-232 standard

The RS-232 interface standard specifies the method of

connection of two devices, the DTE and DCE.

DTE( Data Terminal Equipment) for example, may be a computer

or a printer. A DTE device communicates with a DCE device.

DCE Data Communications Equipment,example a modem.

A DCE device receives data from the DTE and retransmits via

another data communications link, such as the telephone system.

The RS-232standard is a unbalanced standard.


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5-8

Connection between DTE & DCE

1

2

3

4

5

6

7

8

20

22

1

2

3

4

5

6

7

8

20

22

Chassis Ground

Transmit Data (TxD)Received Data ( RxD)

Request to Send ( RTD)

Clear to Send ( CTD)

Data Set Ready ( DSR)

Signal Ground ( Common )

Data Carrier Detect ( DCD )

Data Terminal Ready ( DTR )

Ring Indicator ( RI )

23Data Signal Rate Selector(DSRS)

Computer Modem


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6-8

Salient Features of RS 232 :

Point - Point Communication

Suitable for serial, binary and digital data communication

Asynchronous, meaning that there is fixed timing between

data bits, but variable time between character frames

full duplex communications

Unbalanced transmission (and therefore susceptible to noise)

Signal Voltage : 1= - 3V to -25V

0=+3V to +25V

Distance : 50 ft. typically

Transmission Rate : 20kbps typically


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7-8

Salient Features of RS 485 :

The RS 485 interface standard is true balance or differential std.

The RS 485 permits a multidrop n/w connection on 2 wires.

Distance up to 1.2Km.

Transmission Rate up to 12Mbps.

Up to 32 line drivers/receivers on the same line.

Signal Voltage : 1= - 1.5V to -6V

0=+1.5V to +6V

X=High Impedance

The RS485 interface standard is very useful for systems whereseveral instruments or controllers may be connected on

the same line.


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Communication - SIMATICNET

SIMATIC NET Industrial EthernetManagement level

PROFIBUSCell level

Field level

Actuatorsensorinterface

Actuatorsensor

interface

Workstation PC

PLC PC

PLC PCDrivesValves


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Type of Subnets in SIMATIC

-SINUMERIK,RCM-TI 505-Other PLC

S7-300S7-400 M7-400

OPs

SIMATICS5

PROFIBUS-DP

ET 200B/L

ET

200C

DP/AS-Ilink

ASI (Actuator Sensor Interface)

AS-Isubmodules

Sensors andActuators

Field device with AS-I ASIC

AS-I power supply

Industrial Ethernet

PROFIBUS

MPI network

Point-to-Point

PCs, OS PGs

PG720

Cell level

Field level

ASI-level


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SIMATICNET : Communication Methods

PlantLevel

CellLevel

FieldLevel

Actuator/SensorLevel


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ASi bus


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Standard AS-Interface according to EN 50295

Access method Master-slave (deterministic)

Cycle time Max. 5 ms (Spec. V2.1 10ms)

Transmission medium Unshielded, polarized 2-wire cableData and power on a single cable

Max. no. of nodes 62 slaves (max. 4 binary elements per slave)

Network size (approx.) Max. cable length 300 m (with repeater)

Topology Bus, tree, star

Protocols According to AS-Interface

Applications Process or field communication

Technical specifications of the

AS-Interface


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AS-Interface

Standard to EN 50 295

For fieldbus connection of

Actuators and

Sensors

Transfer of data and auxiliary power

via a single cable

AS-Interface Master for many

target systems

S7-300 S5 ET 200S7-200


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SIMATIC NET CP 342-2

LED displays mean reduction indowntimes and servicing times

Shorter commissioning times

with pushbutton configuration More flexible design through use

in ET 200M DP Slave

V 2.0 V 2.1Master functionsand calls

supported

S7-300 S5 ET 200S7-200


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AS-InterfaceConnection using penetration method

Attach coupling moduleto the system

Lay cable in thecable guide

Screw on the usermodule

Mechanicalhold-down

Electricalcontacting


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Master

max. 100 m max. 100 m

AS-Interfacepower supplyunit

AS-Interfacepower supplyunit

Repeater

Configuration Example


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SIMATICNET :Profibus

PROCESS FIELD BUS


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Customer Expectations Cost Savings

Flexibility Reliable & Future oriented

Solution for all Automation Needs

Interoperability & VendorIndependence

! Standard !


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How does PROFIBUS

fulfill all these needs?

PROFIBUS is part ofthe Open Standard

IEC 61158


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NAFTA136 Members

Germany230 Members

China102 Members

Fastest GrowingUser Association

PROFIBUS International *

*Status: Q1/2000

S C fib


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What's so special about PROFIBUS?

Stable standards (EN 50170, IEC 61158)

Vendor independent

More than 1,900 products from 250+ vendors

Nearly 1,000 members worldwide (PROFIBUS User

Organizations)

Market leadership

More than 300,000 applications are already operational

Cost reduction and improved flexibility

PROFIBUS

EN 50170


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Interoperability & Vendor Independence

*Status: Q1/2000

1,000 members in 23 user associations*

1,900 products from more than 280different vendors *

Solution for all your Automation Needs


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Cell Level

Enterprise

Internet

Field Level

PROCESS FIELD BUS

Peer-to-Peer

Solution for all your Automation Needs

Solution for all your (continued)


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Controllers

NetworkComponents

I/O

PC Boards

Instruments

HMI

Tools

Software

Drivers

ValvesSIEMENS

6SE7016-1EA30

WR 2,2kW

Nr.467321

SIMOVERT SC

Drives

Training &Services

see Electronic Product Guide on www.profibus.com for complete list

1,900 products from more than 280 different vendors


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SIMATICNET :ProfibusThe PROFIBUS Protocol

Profibus = Process Field Bus

A general purpose open fieldbus forfactory, process and buildings automation

DP- Decentralised Periphery for fast communication tasks

FMS- Fieldbus Message Specification

for complex communication tasks

PA- Process Automation

for process applications or intrinsic safety


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Peer-to-Peer (Field bus MessageSpecification - FMS)

Connection oriented communication

Definition of communication objects

Transmission rate up to 12 Mbaud

Several masters can participate Master-master communication

Several master can write to the samefield device

Up to 244 bytes of user data

Peer-to-Peer


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Solution for all your (continued) High Speed I/O (Decentralized

Periphery - DP)

High speed data exchange

Transmission rate up to 12Mbaud Several masters can participate

ONE master ONLY can write to a fielddevice

Up to 244 bytes of user data

Same cables & components as Peer-to-Peer

Operation together with Peer-to-Peer

in one network possible


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Hazardous Area (Process Automation -PA)

Protocol is DP - PA field devices arecontrolled by standard DP Master

According to IEC 1158-2 - differentphysical setup

Transmission rate 31.25kbaud

Power and data are transferred via thesame wire

SIMATIC NET : Profibus


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Why use PROFIBUSinstead of conventional fieldtechnology?

Terminal blocks

DistributorDistr. Distr.

Control

CabinetConventional Control

Cabinet

PROFIBUS-DP

Profibus-DP

Advantages:

Fewer components in the control cabinet.Less cabling required &direct links todevices .

Cost reduction in hardware andinstallation,

Less hardware components needed

Easy, fast and cheaper installation.


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Cost Savings (continued)

51%23%

27%

22%

22%

12%

0%

50%

100%

150%

Hardware

Assembly

Engineering

100%

57%

Today (4...20mA) PROFIBUS

Reference: Namur

AK 3.5, Dr. Rathje,

Bayer AG


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SIMATICNET :ProfibusTechnical Details

Max. nodes : 126

Transmission rate : 9.6 kbit/s12 Mbit/s

Access Technique : Token Bus, Master/Slave

Topology : Line, Ring, Star

Redundant cabling : Yes (Fibre Optic)

Max. distance : 9.6 km (RS 485), >100 km

(FO)

Telegram size : 1-244 bytes

Hazardous area use : Yes (Profibus PA - IEC

1158-2)

Data and Power : Yes (Profibus PA)



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When is PROFIBUS-FMS/DP/PA used?

PROFIBUS-FMS PROFIBUS-DP PROFIBUS-PA

Application Cell level Field level Field level

Standard EN 50 170/ IEC 61158 EN 50 170/IEC 61158 IEC 1158-2

Connectable PLC, PG/PC PLC, PG/PC, Field devices fordevices binary and analog areas subject to

field devices, drives, explosionvalves, OPs

Resp. times < 60 ms 1 - 5 ms < 60 ms

Network size


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SIMATICNET :ProfibusNetwork Topologies With PROFIBUS :

Electrical network:

Shielded, twisted two-wire cable (RS 485)

Two-wire cable for areas subject to explosion hazards (IEC 1158-2)

Nodes can be connected via Bus terminal or Bus connector.

Bus or tree topology

Optical network:

Glass FO cable Plastic FO cable

Wireless network with ILM infrared link module forProfibus DP

Mixed network possible via OLM

SIMATIC NET P fib


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Repeater

RepeaterBus terminal

OPS7-400

TD

ET 200

Active Terminator

Different Components used in PROFIBUS :

http://www3.ad.siemens.de/bilddb/picDetails.asp?objID=8063&lang=de&visMode=


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SIMATIC NET :Profibus

12M (BT 12M) bus terminal

For connecting a PROFIBUS node to an RS 485interface

Versions with transmission rates from 9.6 Kbit/s to12Mbit/s

Connects two PROFIBUS or MPI

segments in the RS 485technique

For increasing node count andexpansion

Segment isolation

RS 485 Repeater for PROFIBUS

Bus Connectors


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Up to 126 DP Slaves

SIEMENS

0

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

4 3

130

SIEMENS

0

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

4 3

130

SIEMENS

0

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

4 3

130

(2) (3) (4) (5) (6)(7)

DP Master

Active StationToken

PROFIBUS DP System : Overview


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PROFIBUSis an established fieldbus system which can be

usedby all automation equipment, such as PLCs, PCs, HMIs and

actuators and sensors, for exchanging data.

PROFIBUS-DP System : Overview

PROFIBUS-DP

It is a protocol optimized for speed, which was specially

designed for communication between PLCs (DP masters)and

distributed I/Os (DP slaves).

It is a low-cost, flexible substitute for transmission ofsignals

on cumbersome parallel 24V and 20mA lines.

PROFIBUS-DPis based on DIN 19245 Part 1 and theuser-specific extensions in DIN 19245 Part 3.

PROFIBUS DP S O i


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Masters

PROFIBUS makes a distinction between masters and slaves.

The PROFIBUS masters are in charge of data traffic on the bus. A

master can send messages without being requested to do so,provided

it is in possession of the token that entitles it to access the bus.

Masters are also referred to in the PROFIBUS protocol as activenodes.

Slaves

PROFIBUS slaves are simple I/O devices, such as actuators,

sensors,transducers, etc.

They do not receive the token, that is, they can only acknowledgethe

receipt of messages or send messages (data) to a master onrequest.

Slaves are also referred to as passive nodes.

PROFIBUS-DP System : Overview


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Profibus


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Structure of a PROFIBUS-DP System


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y

S7 S7PS S7S7

CP342-5 DP

S7-300CPU315-2 DP

DP-

NORM-

SLAVE

SIMATIC S7-300

PROFIBUS -DP

DP-

NORM-

SLAVE

PS10A

S7 S7S7400

CPU414-2 DP

Master

S7-400

S7 S7PS S7S7IM153

modular slave

compact slaves

ET 200M

intelligent slave

S7-300S7-300

CPU314

S7PS S7-300

CP342-5 DP

Slaves

PROFIBUS- DP : Access Techniques.


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PROFIBUS DP : Access Techniques.

Logical token ring

between masters

PG720

PROFIBUS

FM

SV

Polling between mastersand slaves


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PROFIBUS-DP: Hardware Component

MPI/PROFIBUSinterface

PROFIBUSinterface

S7-400 CPU with integrated DP Port

S7-300 CPU with integrated DP Port

MPIinterface PROFIBUS

interface

PROFIBUS DP H d C t


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CPs for the SIMATIC S7-400 CP 443-5 Ext. and CP 443-5

Basic(FMS)

CPs for the SIMATIC S7-300

CP 342-5 and CP 343-5(FMS)

CPs for PC/PG CP 5613 and CP 5614

(Hardnet )

CP 5611 or CP5511 (Softnet

)



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p

PROFIBUS Slaves

PROFIBUS-DP,PG/OP Comm.

PG/PC/OP

CP 5613

CP 5611


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PROFIBUS - DP Terminating ResistorCPU with Profibus-DP

interface

N N N NN= Profibus-DP

node

Terminating resistorrequired

CPU with Profibus-DPinterface

N N N NN= Profibus-DP

node


N


PROFIBUS- DP : Bus Cycle Time for Mono-


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yMaster System

Conditions: Each slave has 2 bytes of input data and 2 bytes of output data.The minimum slave interval time is 200 microsecondsTsdi= 37 bit times, Tsdr= 11 bit times

DP slaves

Bus cycle time[ms]

3020105

2

6

10

14

18

12 Mbit/s

1,5 Mbit/s

500 Kbit/s

0

PROFIBUS-DP : Cyclic Data Transmission


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PROFIBUS DP : Cyclic Data Transmission

DPM

aster

DPS

lave

Immediatereply


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Network Communication with an S7-200


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et o Co u cat o t a S 00CPU

PG/PC

Operatorinterface

PLC

S7-200 Printer

Bar code scanner

SIEMENS

SIMATIC

S7-200

CPU214SFRUN

STOP

I0.0

I0.1

I0.2

I0.3

I0.4

I0.5

I0.6

I0.7

I1.0

I1.1

I1.2

I1.3

I1.4

I1.5

Q1.0

Q1.1

Q0.0

Q0.1

Q0.2

Q0.3

Q0.4

Q0.5

Q0.6

Q0.7

SIEMENS

SIMATIC

S7-200

CPU214SFRUN

STOP

I0.0

I0.1

I0.2

I0.3

I0.4

I0.5

I0.6

I0.7

I1.0

I1.1

I1.2

I1.3

I1.4

I1.5

Q1.0

Q1.1

Q0.0

Q0.1

Q0.2

Q0.3

Q0.4

Q0.5

Q0.6

Q0.7

Modem

PG702

SHIFT

ESC

TD 200

F1 F3 F4F2F5 F7 F8F6

ENTER

SIEMENS

NETR, NETW withProfibus components

SIEMENS

SIMATIC

S7-200

CPU214SFRUN

STOP

I0.0

I0.1

I0.2

I0.3

I0.4

I0.5

I0.6

I0.7

I1.0

I1.1

I1.2

I1.3

I1.4

I1.5

Q1.0

Q1.1

Q0.0

Q0.1

Q0.2

Q0.3

Q0.4

Q0.5

Q0.6

Q0.7

SIEMENS

SIMATIC

S7-200

CPU214SFRUN

STOP

I0.0

I0.1

I0.2I0.3

I0.4

I0.5

I0.6

I0.7

I1.0

I1.1

I1.2I1.3

I1.4

I1.5

Q1.0

Q1.1

Q0.0

Q0.1

Q0.2Q0.3

Q0.4

Q0.5

Q0.6

Q0.7

SIEMENS

SIMATIC

S7-200

CPU214SFRUN

STOP

I0.0

I0.1

I0.2

I0.3

I0.4

I0.5

I0.6

I0.7

I1.0

I1.1

I1.2

I1.3

I1.4

I1.5

Q1.0

Q1.1

Q0.0

Q0.1

Q0.2

Q0.3

Q0.4

Q0.5

Q0.6

Q0.7


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Communication Using PC/PPI Cable

Master

The CPU is connected to the COM2 port ofthe PG via a PC/PPI cable

Communication Using MPI


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Communication Using MPICable

Master

TD200 Station 6

Master

OP3 Station 7

Master

TD200 Station 8

CPU224 - Station2

CPU224 - Station3

CPU221 - Station4

CPU221 - Station5

Master

PG with MPI card

Station 0


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PPI Protocol

RS-485

Micro/Win

SIEMENS

SIMATIC

S7-200

CPU214SF

RUN

STOP

I0.0

I0.1

I0.2

I0.3

I0.4

I0.5

I0.6

I0.7

I1.0

I1.1

I1.2

I1.3

I1.4

I1.5

Q1.0

Q1.1

Q0.0

Q0.1

Q0.2

Q0.3

Q0.4

Q0.5

Q0.6

Q0.7

SIEMENS

SIMATIC

S7-200

CPU214SF

RUN

STOP

I0.0

I0.1

I0.2

I0.3

I0.4

I0.5

I0.6

I0.7

I1.0

I1.1

I1.2

I1.3

I1.4

I1.5

Q1.0

Q1.1

Q0.0

Q0.1

Q0.2

Q0.3

Q0.4

Q0.5

Q0.6

Q0.7

SIEMENS

SIMATIC

S7-200

CPU214SF

RUN

STOP

I0.0

I0.1

I0.2

I0.3

I0.4

I0.5

I0.6

I0.7

I1.0

I1.1

I1.2

I1.3

I1.4

I1.5

Q1.0

Q1.1

Q0.0

Q0.1

Q0.2

Q0.3

Q0.4

Q0.5

Q0.6

Q0.7

S7-221

Station 2,

Slave only

S7-224

Station 3

S7-224

Station n

Station 0 with

MPI card installed

SHIFT

ESC

TD 200

F1 F3 F4F2F5 F7 F8F6

ENTER

SIEMENS

TD-200 Station 5

SHIFTESC

TD 200

F1 F3 F4F2

F5 F7 F8F6

ENTER

SIEMENS

TD-200 Station 1

MPI P t l


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MPI Protocol

SF

RUN

STOP

I0.0

I0.1

I0.2

I0.3

I0.4

I0.5

I0.6

I0.7

SIEMENS

S7-200

M i c r o P L C 2 1 2

SIMATIC

X 2

3 4

Q0.0

Q0.1

Q0.2

Q0.3

Q0.4

Q0.5

SF

RUN

STOP

I0.0

I0.1

I0.2

I0.3

I0.4

I0.5

I0.6

I0.7

SIEMENS

S7-200

M i c r o P L C 2 1 2

SIMATIC

X 2

3 4

Q0.0

Q0.1

Q0.2

Q0.3

Q0.4

Q0.5

SF

RUN

STOP

I0.0

I0.1

I0.2

I0.3

I0.4

I0.5

I0.6

I0.7

SIEMENS

S7-200

M i c r o P L C 2 1 2

SIMATIC

X 2

3 4

Q0.0

Q0.1

Q0.2

Q0.3

Q0.4

Q0.5

S7-221

Station 3S7-224

Station 4

S7-226

Station 5

S7-314Station 2

Profibus DP : EM 277


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Profibus DP : EM 277

MPI

SIEMENS

SIMATIC

S7-200

CPU214SF

RUN

STOP

I0.0

I0.1

I0.2

I0.3

I0.4

I0.5

I0.6

I0.7

I1.0

I1.1

I1.2

I1.3

I1.4

I1.5

Q1.0

Q1.1

Q0.0

Q0.1

Q0.2

Q0.3

Q0.4

Q0.5

Q0.6

Q0.7

S7-226

Slave

Profibus

5

2

S7-315 Master

3

0

PPI

SIEMENS

SIMATIC

S7-200

CPU214SF

RUN

STOP

I0.0

I0.1

I0.2

I0.3

I0.4

I0.5

I0.6

I0.7

I1.0

I1.1

I1.2

I1.3

I1.4

I1.5

Q1.0

Q1.1

Q0.0

Q0.1

Q0.2

Q0.3

Q0.4

Q0.5

Q0.6

Q0.7

EM-277

7

Memory Mapping


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Memory MappingCPU 224

V Memory

Offset500 bytes

Input Buffer( SND mailbox )

16 bytes

VB0

VB499

Output Buffer( RCV mailbox )16 bytes

VB500

VB515

VB516

VB531

VB532

VB XX

I/O Output Area16 bytes

I/O Input Area16 bytes

P 000

PI 256

PI 271

PI 256

PI 271

CPU 315 - 2DP

I/O address areaEM 277

PB-DPmodule

Communications : Transmission Media /Protocols


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MPI

Protocols

Std.&Extended

Comms.

S

IMATIC

C

ommunications

Profibus Ethernet

FMS

S7-Basis-Comm.Global Data

S7-Communication

DP

TCP/IP

MAP 3.0

S5-compatible-Communication

PG/OP-Communication

S7 Communication Services for S7-300/400


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300/400

Global Data

Basic Communication withoutConfigured Connection

Expanded Communication usingConfigured Connection(only S7-400)

CPUsoper.

system

CPUsoper.

system

cyclical or/and program controlled

using MPI or K-Bus

programcontrolled using

MPI or K-BusSFC SFC

programcontrolled using

MPI, K-Bus,Profibus orIndustrial Ethernet

SFB SFB

PG and HMI Functions

CPUsoper.

system

Controlled via operating system

using MPI, K-Bus, Profibus andIndustrial Ethernet

PG720

Connections between Communication Participants


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PG 720

S7-400

S7-300

Connections between Communication Participants

CPCPU 1 CP

PROFIBUSIndustrialEthernet

IndustrialEthernet

CPCPU 2

S7 Connection using Ethernet

Industrial Ethernet

PGConnectionusing MPI

MPI

S7 Connectionusing MPI

OP Connection using

PROFIBUS

PROFIBUS

S7 Connectionusing PROFIBUS

Connections and Resources


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Connections and Resources

A connection is a logical assignment of two communication partners forcarrying out communication services.

Connections :

At the participating stations,connection resources for the endposition(e.g.CPU)

or for the transition position (e.g. CP) are required for every connection.

The number of connection resources depends on the CPU/CP.

If all connection resources of a communication partner are occupied,

no new connection can be established.

Resource :

S7 Functions to CPUs

For the S7 functions via the integrated MPI-/PROFIBUS-DP interface, one connectionresource is occupied on the CPU for the end position per S7 connection.

For the S7 functions via an external CP interface, one connection resource each isoccupied on the CPU and on the CP (transition position) per S7 connection.

S7 Functions to FMsFor the S7 functions to a function module (FM) via the internal MPI-/PROFIBUS-DPinterface,two connection resources (for two transition positions) are occupied on theCPU per S7 connection and on the FM one connection resource each (for theend position) is occupied.

Assignment of Connection Resources for S7 Communication


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free connection resource

Occupied connection resource

CPU

FMCPU

S7-300/400:

MPI or internalPROFIBUS-DP-interface

S7-300/400:

Indl. Ethernetor PROFIBUS-CP

Assignment of Connection Resources for S7 Communication

S7-400:MPI or internalPROFIBUS-DP

FMCPUS7-300:

internalPROFIBUS-DP

FMCPUS7-300:MPI interfaceCPCPU


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Networking via MPIS7-300 or S7- 400

PG connection via MPI

OP connectionvia MPI

CPU 1 CPU 2

PG 720

S7-300 or S7- 400

0

1

2

n Default MPI address

PLC link via MPI

M i f t f th MPI i t f


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Main features of the MPI interface

Physical Interface : RS 485 Transmission rate

19.2 Kbps or 187.5 Kbps.

Distance

up to 50 m (between 2odes)and with 2 repeaters,1100 m

and 23.8 km with optical

fiber and star coupler.

Profibus components

cables, connectors

S7-400

PG

OP

S7 200

S7-300

SIMATIC-HMI

S7-300MPI -Network


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Connection Options to MPI

Busconnector

Connection forPG/HMI

To MPIinterfaceofCPU

To MPI

interfaceofCPU

Switch for terminatingresistor


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Types of MPI CommunicationGlobal Data

Op. Sys.of CPU

Op. Sys.of CPU

cyclic or event-driven

via MPI

Event-driven

via

MPI or K-Bus

Basic communication( non-configured connection)

SFC SFC


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Global Data Table Global data communications

Small volumes of data (approx. 20 bytes on the S7-300,

30 to 60 bytes on the S7-400 ) cyclically controlled

Broadcast call (data are sent without response)

The data sent/received are only parameterized in atable (no program)

The function is handled via the MPI interface of the

CPUs

Data can be sent and received with SFCs even during

the PLC cycle

SFC 60 GD_SND and SFC 61 GD_RCV are available for

this purpose

Gl b l D t T bl


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Global Data Table

Global Data

CPU 1MW 10

CPU 2MW 20

CPU 3MW 30

Gl b l D t C i ti


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Global Data Communication

Station 1 Station 2

IW 4 (IW 2)

QW 12 (QW 6) IW 4 (IW 2)

QW 12 (QW 6)

0 8 1 5 0 8 1 5

4 7 1 14 7 1 1

MPICommunication using SFCs


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With communications SFCs you have an acknowledged data

transmission using non-configured S7 connections.

In communication ( X_.. )using an MPI subnet, the addressing of thepartner takes place by specifying the MPI address. In communication

( I_... )within the same station it takes place by specifying the logical

module initial address (I/O address).

S7-300/400 (Client/Server)

X-SendX-Rcv

X-SendX-Rcv

I-PutI-Get

I-PutI-Get

S7-300/400 (Client/Server)

X-PutX-Get

X-PutX-Get X-AbortI-Abort

SFC Communication: Block Overview


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SFC

SFC 65

NAME Short Description

X_SEND Send block for sending data to the X_RCV (Client) block

SFC 66 X_RCV Receive block for receiving the data of the X_SEND block

X_GET Read data from the partner PLCSFC 67

X_PUT Write data to the partner PLCSFC 68

X_ABORT Abort existing connectionSFC 69

I_GET Read data from the partner CPUSFC 72

I_PUT Write data to the partner CPUSFC 73

I_ABORT Abort connection to the partner CPUSFC 74

SFC Communication: Block Overview


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EthernetFundamentals

Industrial Ethernet Innovative and time-proven


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Innovative and time proven

Since 1985, Industrial Ethernet has been the tailor-made cell network

for automation engineering and the basis for IT applications

Industrial Ethernet Designed for Industry!

Industrial Ethernet is a network based on theIEEE 802.3 standard

It is the leading industrial network with more than

400,000 nodes in use worldwide

Redundant networks

Your data travel down the line at 100 Mbit/s

Industrial Ethernet offers standard communication protocols(e.g. TCP/IP)

Industrial EthernetInnovative and time-proven


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Innovative and time proven

Products with RJ45 connectors and TP cables

Fast Ethernet (100 Mbit/s)

Switching

Fast media redundancy

Information technology (Internet, multimedia)

Industrial wireless LAN

FastConnect

Industrial Ethernet in line

Management

Industrial EthernetProduct overview


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Product overview

Transmission media

Communication processors

for SIMATIC controllers

Network components

Communication processors

for PCs, PGs and workstations

SIMATIC NET software

IE/PB Link

Industrial EthernetPC cards


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PC cards

Savings in time and costs

thanks to standards, speedand reliability

Your data travel down the line at100 Mbit/s

Standard Windows XP andWindows 2000 operating systems

Easy handling thanks toPlug and Play

Card drivers are already integrated

in Windows

Redundant networks

CP 1512

CP 1612

CP 1613

CP 1515

Industrial Ethernet Network components


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ELS electrical lean switch

module

Active components

OSM optical switch module

Industrial Ethernet Extract from the product portfolio

RLM with CP 1515

Passive components

Fiber-optic cables

Industrial Ethernet FastConnect

Industrial twisted pair cables



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Opticalswitching module

Opticalmediaconverter

Fiber-optic cable

Configuration exampleFiber to the machine!


Industrial EthernetIT solutions in manufacturing plants


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IT solutions in manufacturing plants

Batch manufacturing/

production

Office

Accessto data

E-mail

CP 343-1 IT

CP 343-1 IT

Ethernet

Industrial Ethernet

MailserverPC with standard

browser

Industrial EthernetCP 243-1IT, CP 343-1IT and CP 443-1IT


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CP 243 1IT, CP 343 1IT and CP 443 1IT

ISO TCP/IP PG/OP

S5-K IT TF

S7-K

OPC

Platform-independent access to process and diagnostics data

Access is local, mobile or remote using Web technology

Alarm annunciation through e-mail


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Safety IntegratedIntegrated safetytechnology via Profibus and AS-Interface

SIGUARDlaser scanner EM. STOPperatorpanel Safetymonitor AS-imodule SIGUARDlight curtainsSIGUARDpositionswitchesSIGUARDsafety door lock

ET200SPROFIsafe

DP/DPcoupler

SINUMERIKSIMODRIVE

MICROMASTER

SIMATIC S7 400F/H

ET200S PROFIsafewith motor starter

SIMATIC S7 315F

ET200M/F

SIGUARDlaser scannerlight curtains

ET200SPROFIsafe

DP/AS-ilink

TIA for theoperation phase

Factory andprocess automationTotally Integrated Automation


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Manufacturing Execution

Systems (MES)

Industrial

Communication

Controls

Industry

Software

Actuator-

Sensor

Interface

Level

Controller/

Automation

System

Distributed I/0

Process

Control

SystemMotion Control

System Human-MachineInterface

DrivesTechnology

PC based

Automation

Enterprise Resource Planning

(ERP)

Ethernet

Ethernet

Totally Integrated Automation

Introduction

System overview

Three-fold uniformity

Changes in technology

Component based Automation

Changes in automation


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IntelligentFieldDevices

In future, automationapplications will be distributedover man control latforms

PLC

PC

1990 2000 2010

Control platforms

PC

Communication

Fieldbus

Ethernet

IT-technologies andautomation are

growing closer

PLCPLC

Changes in automationtechnology

Introduction

System overview




PC-based Automation

Today: modular concept with


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Engineering stationHuman MachineInterface

PROFIBUS

Distributed I/O

Ethernet

Electrical/Electronics

Mechanical

Programexecutesoncentral

controller

Today:modular concept withcentralintelligence

Introduction

System overview




PC-based Automation

New with TIA:modular concept with


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Engineering stationHuman MachineInterface

Ethernet

PROFIBUS

Ethernet/

Profibus-

Link

Intelligent field devices

Technological module:Mechanical +

Electrical/Electronics +

User program

modular concept withdistributedintelligence

Introduction

System overview




PC-based Automation

Positioning Modules


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gFM 353, FM 354, FM 453

FM 353

Controlling of stepper motors

FM 354

Controlling of servo motors

FM 453

Controlling of stepper- & servo motors

Overview


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Functional Diagram

STEP 7 programming

FM parameterizing

CPU FM 353 FM STEPDRIVEMPI

OP

SIMOSTEPstepper motor

PG PC

Human-machine

interfaceFault diagnosis Drive interface STEP

Pulses,

direction signalSequence control

Starting/stopping of

positioning

Power section forstepper motors

SIMATIC FM 353

Universal Positioning


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gParameters (1)

Positioning of linear and round axes

Drive interface

Stepping Pulse and directional signal

2 software limit switches

Operating modes

Reference point approach Setting up

Incremental dimension

MDI

Automatic/single block

Control

SIMATIC FM 353

Adaptation to Mechanics and


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pTechnology Parameters (2)

Start-Stop frequency 10 Hz to 10 kHz

Maximum frequency 200 kHz

Acceleration 10Hz/s to 10MHz/s

Traversing range +/- 100m

Traversing speed 10 Hz to 50 kHz

SIMATIC FM 353

A t d R li bl P iti i


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Accurate and Reliable PositioningParameters (3)

Axis error corrections

Non-reversing compensation

Offset compensation

Drift compensation

Override

Feed and time override

Acceleration override (programmable)

Switching functions (M functions)

Acknowledgement-controlled

Timed

Path-dependent

SIMATIC FM 353


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Functional Diagram

STEP 7programming

FM parameterizing

MPI

Sequence control

Starting/stopping of

positioning

Drive interface +/-10V

CPU FM 354

servo motor

Human-machineinterface

Fault diagnosis

OPPG/PC

SIMODRIVE 611U

Encoderinterface

SSI/incremental

SIMATIC FM 354

Universal Positioning


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gParameters (1)

Position control for linear and round axes

Universal drive interface

+/- 10V

Selectable position encoder

Incremental encoder (RS 422)

Absolute value encoder (SSI)

1 reference point with incremental encoder

2 software limit switches

SIMATIC FM 354

Traversing Possibilities


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gParameters (2)

Simulation mode

Parking axis

Teach In

Operating modes

Reference point approach

Setting up

Incremental dimension

MDI

Automatic/single block

Control

SIMATIC FM 354

Adaptation to Mechanics and


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Technology Parameters (3)

Traversing range +/- 100m

Traversing speed 0.01m/min to 500m/min

Acceleration 1.0mm/s2 to 99.999m/s2

Jolt time (jerk limitation) 0s to 9.999s

SIMATIC FM 354

d li bl i i i


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Accurate and Reliable PositioningParameters (4)

Axis error corrections

Non-reversing compensation

Offset compensation

Drift compensation

Monitoring following error

Override

Feed and time override

Acceleration override (programmable)

Switching functions (M functions)

Acknowledgement-controlled

Timed, Path-dependent

SIMATIC FM 354

Retentive Data Storage on the Module


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Retentive Data Storage on the ModuleParameters (5)

Machine data

Traversing programs

Incremental dimension table

1 to 100 incrementaldimensions can be defined

Tool corrections 20 correction and wear values

can be defined

Parameter assignment e.g. with PG/PC

SIMATIC FM 354

Function: Jerk limitation


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Parameters (7)

Lower wear

Faster positioning possible

t

v

Abrupt acceleration t

v

Acceleration withjerk limitation

SIMATIC FM 354


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Structure DiagramM P I

SIMATIC S7-400 Machine

STEP 7 programming

Setup of the FM

Monitoring & Control

Diagnostics

in case of errorCommunication of the S7 CPU

with FM 453 via function blocks

Drive interface

Pulses and Direction

Setup Monitoring

e.g. Field PG e.g. OP 27

Stepper driver

FM 453

Stepper motor

CPU

1FT6

S IM O D R IV E 6 1 1U

S I M E N S

E VS A

Drive interface

analog +/- 10VEncoder interface

SSI, incremental

SIMATIC FM 453

Ashok Plc Net

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