Siemens Simatic PCS 7 Function Manual page 103

Redundancy connection
You need the following components to make the redundancy connection, depending on the
distance to be bridged:
Maximum distance
10 m
100 m
1000 m
Availability
The availability of the complete system is also ensured even if one of the two Route Control
servers fails because the two Route Control servers form an independent redundancy node.
Note
The buses marked with * (terminal bus and plant bus) can be configured redundantly with
optical or electronic switch modules.
Additional information
● PC station identified as faulty; see section "Solutions for OS servers (Page 94)"
● Section "How to configure a Route Control server and its redundant Route Control partner
server (Page 178)"
● Manual
High Availability Process Control Systems (V9.0)
Function Manual, 05/2017, A5E39221836-AA
Required components
Null modem cable
● Crossover network cable
● Per server: A free network connection
(see section "Network components (Page 56)")
Fiber-optic cable
Per server:
● A free network connection
(see section "Network components (Page 56)")
● 1 Ethernet cable
● 1 media converter (e.g., SCALANCE X101-1)
Process Control System PCS 7; SIMATIC Route Control
High availability solutions in PCS 7
4.8 Solutions for the Route Control server
Connection
Serial connection
Ethernet connection
Ethernet connection
103