Connection To The Terminal Bus/Plant Bus - Siemens PCS 7 Installation Manual

PC components of a PCS 7 system
3.9 Connecting PC stations
Advantages and disadvantages
● Advantage:
Cost reduction can only be achieved in cabling overhead because otherwise the connection
of the communication nodes in the network is no different from the recommended
configuration with separate system bus and terminal bus.
● Disadvantage:
A shared bus is at a disadvantage with regard to access and error security. For example,
a targeted attack or a device error not only disturbs communication between OS servers
and OS operating stations at the terminal bus end, but also the communication on the
system bus and ultimately will lead to failure of the entire automation. These security-related
aspects need to be compared and weighed against the corresponding requirements in the
respective project.
Additional information
● You can find information on the following topics in the configuration manual
System PCS 7, Engineering Station:
– Cables and network components
– Distances between the components of a PCS 7 plant
– Topology, operating ranges and parameters
● Section "Basic configuration of the PCS 7 plant (Page 13)"
● Section "Components for connection to the terminal bus/plant bus (Page 48)"
● You can find general information about the configuration limits in PCS 7 in the installation
manual
3.9.2

Connection to the terminal bus/plant bus

Connection of OS, BATCH, Route Control and ES
You connect operator stations, BATCH stations, route control stations and engineering stations
to Industrial Ethernet using PCS 7 communication modules. The communication modules
occupy a slot in the PC or programming device (PG). You use different communication modules
depending on your requirements.
Additional information
You can find an overview of the communication modules available in the section " Components
for connection to the terminal bus/plant bus (Page 48) ".
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Process Control System PCS 7; Licenses and Configuration Limits .
Process Control
PCS 7 - PC Configuration (V8.2)
Installation Manual, 03/2016, A5E36200050-AB