How To Configure A Fault-Tolerant Plant Bus - Siemens SIMATIC PCS 7 Function Manual

Advantages of fault-tolerant components
4.3 Communication connections
Additional information about configuration
You can find additional information on this on the Internet http:\\www.siemens.com/pcs7-
documentation (http:\\www.siemens.com/pcs7-documentation):
● Operating instructions
● Operating instructions
4.3.3

How to configure a fault-tolerant plant bus

Introduction
You configure the communication connections for the plant bus with NetPro. Industrial Ethernet
is used for the plant bus.
Fault-tolerant plant bus
You can set up a fault-tolerant plant bus with a ring structure.
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
network adapters 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 61)".
Redundant, fault-tolerant plant bus
To configure a redundant, fault-tolerant plant bus, two network adapters each have to be
physically present in the OS servers that will be connected redundantly and in each subsystem
of the H system 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 network adapter 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 63)".
Server or single-station system with standard network adapters
When connecting a server or a single-station system via two standard network adapters, e.g.
Intel Desktop Adapter, to a redundant plant bus (two separate rings - "Ring 1" and "Ring 2" in
this case), please note the following:
Assign IP addresses in different IP address ranges to the network adapters in Ring 1 and Ring
2.
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SIMATIC NET; SCALANCE X204RNA, SCALANCE X204RNA EEC
SIMATIC NET PG/PC; Industrial Ethernet SOFTNET-IE RNA V8.2
Fault-tolerant Process Control Systems (V8.1)
Function Manual, 11/2014, A5E34878832-AA