Siemens SIMATIC PCS 7 Function Manual page 101

The components of the process control system are connected to the plant bus using switch
modules.
The degree of availability you require determines whether or not you should use additional
CPs in the OS servers and in each subsystem of the automation system.
This section describes the procedure for a fault-tolerant plant bus (ring) with switch modules
without additional CPs.
Additional information is available in the section "Fault-tolerant plant bus (Page 57)".
Redundant, fault-tolerant plant bus
To configure a redundant, fault-tolerant plant bus, two CPs each have to be physically present
in the OS servers that will be connected redundantly and in each H subsystem and they must
be configured in NetPro. Two networks must also be configured in NetPro.
The procedure is identical to the procedure for the fault-tolerant plant bus. This procedure must
be performed for one CP per bus and subsystem (H system or PC station on the plant bus).
Additional information is available in the section "Redundant, fault-tolerant plant bus
(Page 59)".
Requirements
● The PCS 7 project with a SIMATIC H station is open in SIMATIC Manager.
● In HW Config, one 443-1 type CP has been configured in each H subsystem.
● Two SIMATIC PC stations each with one CP 1613 have been configured in HW Config.
Procedure
1. Open NetPro in SIMATIC Manager with the menu command Options > Configure
2. Select the menu command Insert > Network Objects to open the hardware catalog.
3. In the hardware catalog, click the plus sign to open the submenu containing the subnets.
4. Double-click the "Industrial Ethernet" subnet to insert it into the network view.
5. In the left subsystem of the SIMATIC H station, select the interface icon for the CP 443-1
6. Follow the same procedure for the CPs in both OS servers.
7. Save your configuration.
Fault-tolerant Process Control Systems (V8.0)
Function Manual, 03/2012, A5E02779471-02
Network.
Note
To drag subnets into the NetPro project window, click the network, hold down the left
mouse button and drag it to the desired location. If you cannot place the object where you
want it, you may need to move other objects to make the necessary space.
and drag a connection to the Industrial Ethernet subnets.
Repeat the procedure for the CP of the right subsystem.
Advantages of fault-tolerant components
4.3 Communication connections
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