Siemens Welding System ST PCS 7 User Manual

Redundant operator systems

Siemens ST PCS 7 · November 2007

5

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OS redundancy shown in a client/server architecture with high availability

OS single stations and OS servers can have a redundant design 

if necessary:

• A SIMATIC PCS 7 Single Station Redundancy programming 

package is required to design redundant OS single stations. 

This contains: 

- OS Software Single Station

- Software WinCC/Redundancy (in each case for two 

OS single stations)

- RS 232 cable connector for optimization of internal commu-

nication between the two OS single stations.

• A SIMATIC PCS 7 Server Redundancy programming package 

is required to design redundant OS servers. This contains: 

- OS Software Server 

- Software WinCC/Redundancy (in each case for two 

OS servers) 

- RS 232 cable connector for optimization of internal server-

server communication.

A separate Ethernet connection can be used instead of the serial 

RS 232 connection for optimization of internal communication 

between the two redundant stations (OS single 

stations/OS servers). This is an alternative e.g. with larger dis-

tances between the stations or if the COM interface is required 

elsewhere. 
An optical or electrical connection can be used depending on 

the environmental conditions and the distance between the re-

dundant stations, e.g. up to 100 m per crossover network cable 

with RJ45 connectors. For further information, refer to the Man-

ual "SIMATIC PCS 7 V7.0 fault-tolerant process control systems"; 

for appropriate cable material and further accessories, refer to 

Catalog IK PI (Industrial Communication). 
What further components are required depends on the plant ar-

chitecture. The design of the plant bus and terminal bus 

(OS-LAN) is of particular importance, as well as the type and 

number of subordinate automation systems. The maximum re-

quirements are determined by the redundant configuration 

shown in the figure with a fault-tolerant automation system and 

two redundant rings each for the plant bus and terminal bus. 

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The following table provides an overview of which components 

are required for a redundant OS single station or OS pair of serv-

ers depending on certain criteria:

SIMATIC PCS 7 Indus-

trial Workstation, single 

station or server ver-

sion, alternatives

Incl. Ethernet network card 10/100/1000 Mbit/s 

and BCE

2

--

--

Incl. CP 1613 and S7-1613 software

2 (alternative to BCE)

2

2

SIMATIC PCS 7 Single Station/Server Redundancy V7.0 (including RS 

232 connecting cable)

1

1

1

S7-REDCONNECT Upgrade

--

--

2

Connection to redun-

dant plant bus 

(2 rings), alternatives

BCE

Desktop adapter network 

card

2

--

--

CP 1613

CP 1613 communications 

processor

2 (alternative to BCE)

2

2

S7-1613 software

2 (alternative to BCE)

2

--

S7-REDCONNECT software

--

--

2

Connection to redun-

dant terminal bus 

(2 rings)

SIMATIC PCS 7 Redundant Terminalbus 

Adapter Package

2

2

2

© Siemens AG 2007