User's Manual

Operator system
Redundant operator systems
OS redundancy
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Siemens ST PCS 7 · November 2007
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■ Overview
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.
■ Design
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:
AS 412H/
AS 414H/
AS 417H
Client Client
OS-LAN (Ethernet), ring 1 OS-LAN (Ethernet), ring 2
Redundant servers
Redundant Industrial Ethernet
plant bus (double ring)
Up to 8 AS per single
station/pair of servers
9 to 64 AS per single
station/pair of servers
Min. 1 fault-tolerant
AS
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