automation and drives simatic s7 software redundancy

Automation and Drives

SIMATIC S7

Software Redundancy


A&D AS SM6 R.Fischer 2SIMATIC Software Redundancy

SIMATICSW Redundancy

SW RedundancyPrinciple

Steam Production

Boiler 1 Mixer Boiler 2 Dryer

REDUNDANCY Area

Principle

Positioning

Application FieldsConfiguration

Features

Order number and delivery form




SW RedundancyPositioning

Low Cost / Low Performance Redundancy solution based on standard components

Universal solution for all CPU from CPU 315-2DP until CPU 417-4

Marketing parallel to S7-400H

Principle

Positioning


Features





SW RedundancyApplication Fields

Application for processes that tolerate a Master-Slave switchover time of about a second

Examples: Water treatment

Control of cooling systems

Control and monitoring of temperature

levels

Traffic control

Measuring registration

Principle

Positioning


Features





SW Redundancy with S7-400Configuration

Redundant AreaNon redundant

MPI/ Profibus/ Ethernet

Redundancy Connection

Mastercontroller

Back upcontroller

Non redundant AreaArea

ET 200M withIM 153-2

Active Bus Backup Bus

Principle

Positioning


Features





Profibus DP Redundancywith Standard IM 153-2

IM

IM

Bus module (BM)

ActiveBus module

Profibus DP

ET 200Mwith active Bus modules

L+

L+

Redundant IM 153-2Redundant IM 153-2Principle

Positioning


Features


Available as individual componentsIM: 6ES7 153-2AA02-0XB0BM: 6ES7 195-7HD00-0XA0

or as Bundle (2 x IM + 1 BM)6ES7 153-2AR00-0XA0




SW RedundancyFunction

Master

Reception of status information from reserve controller

Non redundant user program processing

Redundant user program processing

Transmission of redundant data to reserve controller

Writing of non redundant and redundant outputs

Reserve

Reception of information from master controller

Reading of Inputs

Writing of non redundant outputs

Non redundant user program processing

Transmission of information to the master controller

Reading of Inputs

Principle

Positioning


Features





SW Redundancy with S7-400

Redundant area

MPI/ PROFIBUS/ Ethernet

Redundancy Connection

Mastercontroller

Back upcontroller

Principle

Positioning


Features





SW Redundancy with S7-400 and WinCC

Redundanzbereich

PROFIBUS/MPI/Ethernet

Mastercontroller

Back upcontroller

Nonredundantarea

WinCC Redundancy script

Redundant area

Principle

Positioning


Features





SW Redundancy with single PROFIBUS

MPI/PROFIBUS/ Ethernet

Mastercontroller

Back upcontroller

Principle

Positioning


Features





SW Redundancy with redundant Ringbus

MPI/PROFIBUS/ Ethernet

Mastercontroller

Back upcontroller

OLM

Principle

Positioning


Features





SW Redundanz with Multi Redundancy

Back upcontroller

Redundant areaRedundant areaNonredundantarea

Nonredundantarea

Principle

Positioning


Features





SW RedundancyFeatures

Master slave switchover time dependant on:

CPU-Type

number of I/O and number of DP-slaves

volume of data to be transfered

communication device

Example with 2 CPU 414-2 DP, 4 DP-Slaves, 4 kBytes Data, communication throught Profibus

Data transfer time appr. 1 s

DP-Slave swithover appr. 20 ms

Fault detection time appr. 100ms

Sum appr. 1,1 s

Principle

Positioning


Features





SW RedundancyFeatures

Switchover procedure Outputs are beeing frozen during the switchover

After the switchover, the transfered data are used

Switchover reasons Master failure (Power off or CPU-STOP)

Failure of the Profibus-DP of the master controller

Manual switchover

Memory requirement is 10 kBytes

STEP7 V 4.02 is required

Principle

Positioning


Features



SIMATIC S7

Software-Redundancy

automation and drives simatic s7 software redundancy

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