Network adapters for connection to the redundant, high availability plant bus (2 rings)
You need network adapters with an integrated processor for connection to the redundant, high
availability plant bus.
Network adapter Number of con‐
nections
Connection type Redundancy type
2x Communications pro‐
cessor
(CP 16x3/CP 1628)
32 S7 connection, fault-tolerant 2-way redundancy
16 S7 connection, fault-tolerant 4-way redundancy
License key for AS communication
Depending on the network adapters used, you need a license key for PC stations with
communication to the AS.
When using high availability S7 connections, you require a license for the software S7-
REDCONNECT .
Network adapter License key for product
Standard Ethernet network adapter BCE
Standard Ethernet network adapter with high avail‐
ability connections
SOFTNET-IE S7 REDCONNECT VM
When using SIMATIC NET CP (e.g. CP 1623) Industrial Ethernet (IE)
When using SIMATIC NET CP (e.g. CP 1623) with
high availability connections.
HARDNET-IE S7 REDCONNECT
Additional information
● You can find approved network adapters in the Catalog Overview
Process Control System
PCS 7; Released Modules
● Documentation
Process Control System PCS 7; PCS 7 Readme
4.3.4.2 High availability plant bus
The plant bus connects automation systems to servers (OS server, Route Control server). The
connection to a high availability plant bus is implemented with Ethernet communications
processors (CPs) that are installed in each subsystem of the automation system and in the
servers.
High availability plant bus can be set up in a ring structure with network components of
SIMATIC NET. The network components ensure unrestricted operation of the plant bus. For
example, a broken cable in the connection between the modules is tolerated and
communication remains uninterrupted.
If the plant bus is disrupted, no process data are transferred between the servers and the
automation systems or between the automation systems themselves.
High availability solutions in PCS 7
4.3 Solutions for communication
High Availability Process Control Systems (V9.0)
Function Manual, 05/2017, A5E39221836-AA 69
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