© Siemens AG 2011. All Rights Reserved.

SIMATIC ET 200MSystemredundancy

© Siemens AG 2011. All Rights Reserved.

Industry SectorPage 2

Redundancy with PROFINET

Possible Configurations

PNSync

Sync

PN

PN

DP/MPI

Sync

Sync

PN

PN

DP

ET 200M

IM 153-4 PN IO High Feature

DP/MPI

DP

System redundancy with S7-400H

PNSync

Sync

PN

PN

ET 200M

IM153-4 PN IO Standard

DP/MPI

DP

Ring struktur with standard-CPU (MRP)

ET 200M ET 200M

Standard-CPU (IO Controller) S7-400H

ET 200MET 200M

© Siemens AG 2011. All Rights Reserved.

Industry SectorPage 3

Redundancy with PROFINET

Control of possible errors

1. Wire break of the ring2. Power off / failure of a single station3. Switch over time appr. 200ms

1

2

1. Wire break of the ring2. Power off / failure of a single station3. CPU failure4. Switch over time appr. 30ms

autom. synchronisation at CPU change

1

2

3

© Siemens AG 2011. All Rights Reserved.

Industry SectorPage 4

References

Applications

Safety & High

availibility

High-available

communication

PROFIBUS I/O

PROFINET I/O

Overview

Periphery

Redundant

Periphery

Innovations

Overview

Goals

High-available automation system SIMATIC S7-400H with PROFINET I/O System Redundancy (SR)

Automatic switchover in the event of a fault Event-controlled synchronization of both stations makes for fast and bumpless switchover Redundant CPU picks up processing at the interruption point without loss of information and alarms. All components can be replaced during running operation (hot swapping). When replacing a CPU, it is automatically loaded with the latest programs and data.

PROFINET

Open ring architecture

SR-Support through H-CPUs and ET 200M

Automatic synchronization after replacement of faulty component

Failure of an IO device (ET 200M) is limited to the damaged ring node

Guarantee of functionality in the case of an error in a CPU or a ring node or a bus error

ET 200M E 200M

Cable break between two devices does not affect functionality of the system

Failure of a CPU does not affect functionalityof the redundant system

ET 200MET 200M

Data synchronization

Switch SwitchSwitch

CPU 41x-5H CPU 41x-5H

Sync wiring

© Siemens AG 2011. All Rights Reserved.

SIMATIC ET 200M