Redundant components
The following components are configured redundantly:
● Electrical or optical network with Ethernet switches
● Switches, fiber optic cables and electrical connections
● Ring structures based on switches from the SCALANCE series.
You can find additional information on the switches used with PCS 7 in the section "Network
components (Page 56)".
Additional information
● Section "How to configure the redundant terminal bus on the basis of the Parallel
Redundancy Protocol (Page 115)"
● Documentation
PCS 7 Released Modules
● Manual
SIMATIC Net Twisted Pair and Fiber-Optic Networks
● Operating instructions
SIMATIC NET; Industrial Ethernet Switches SCALANCE X-400
● Configuration manual
SIMATIC NET; Industrial Ethernet Switches SCALANCE X-400
● Operating instructions
SIMATIC NET; Industrial Ethernet Switches SCALANCE X-200
● Operating instructions
SIMATIC NET; Industrial Ethernet; "SCLANCE X204RNA,
SCALANCE X204RNA EEC"
● Operating instructions
SIMATIC NET; PG/PC - Industrial Ethernet; SOFTNET‑IE RNA
● Online help for SOFTNET IE RNA
4.3.3.4 Redundant, high availability terminal bus based on the Parallel Redundancy Protocol
(PRP)
The section below describes the basic structure of a redundant high availability terminal bus
using the SIMATIC NET SOFTNET-IE RNA software. This software is based on the Parallel
Redundancy Protocol (PRP) as specified in IEC 62439-3.
Each PC station is connected to 2 separate redundant networks with two network adapters
each. The communications processes on the redundantly connected PC stations are organized
by the SIMATIC NET SOFTNET-IE RNA software.
The SIMATIC NET SOFTNET-IE RNA software package is required on each redundantly
connected PC station.
You can find additional information on this in the section "How to configure the redundant
terminal bus on the basis of the Parallel Redundancy Protocol (Page 115)".
The following diagram illustrates a sample configuration based on the SIMATIC NET
SOFTNET‑IE RNA software:
High availability solutions in PCS 7
4.3 Solutions for communication
High Availability Process Control Systems (V9.0)
64 Function Manual, 05/2017, A5E39221836-AA
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