Saia-Burgess Controls AG
User Manual Standby System │ Document 27-645 │ Edition ENG 02 │ 2017-04-26
Designing the System
Standby System Overview
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1.3 Designing the System
Redundant automation solutions can be achieved with various network topologies.
Physically separating the management network (SCADA systems) and the
network for the remote I/Os is recommended. We also recommend setting up
availability and thus the system reliability. Standard devices from third-party
providers can be used for the network components (switches). We have had good
experiences with the switches (RS30) from Hirschmann. However, the networks
can also be set up with standard components in a star structure. A shared physical
network for the remote I/Os and management systems is also possible, but
availability of the system will be reduced accordingly.
Ethernet
SCADA 1 SCADA 2
Network redundancy
with ber optical ring
SecondaryPrimary
Process I/OProcess I/O
Standby Controller
PCD3.M6880
SCADA-System
Smart RIOs
PCD3.T668
Ethernet
Ethernet
SCADA 1 SCADA 2
SecondaryPrimary
Process I/OProcess I/O
Standby Controller
PCD3.M6880
Smart RIOs
PCD3.T668
SCADA-System
Recommended network topology with physi-
Physically separate networks in a star topology
with standard components
Ethernet
Standby CPU
PCD3.M6880
Standby CPU
PCD3.M6880
SCADA 1 SCADA 2
SecondaryPrimary
Process I/OProcess I/O
SCADA-System
Smart RIOs
PCD3.T668
Shared physical network in a star topology with
standard components
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