Note
Using VLAN
You can use a Virtual Local Area Network (VLAN) to divide a physical bus system into logical
subnets (e.g. terminal bus and plant bus).
You can find additional information on this on the Internet: https://
support.industry.siemens.com at Entry ID: 66807297 (https://support.industry.siemens.com/
cs/ww/en/view/66807297) .
Additional information
● Online help for "SIMATIC NET SOFTNET-IE RNA" software
● Section "How to configure the redundant terminal bus on the basis of the Parallel
Redundancy Protocol (Page 115)"
● You can find information on the available operating systems in the
PCS 7 Readme
file
You can find additional information on this on the Internet http:\\www.siemens.com/pcs7-
documentation (http:\\www.siemens.com/pcs7-documentation):
● Operating Instructions
SIMATIC NET; Industrial Ethernet; "SCALANCE X204RNA,
SCALANCE X204RNA EEC
● Operating instructions
SIMATIC NET; PG/PC - Industrial Ethernet; SOFTNET-IE RNA
V8.2
4.3.4 Solutions for the plant bus
4.3.4.1 Connecting PC stations to the plant bus
Network adapters for connection to the high availability plant bus (1 ring)
Suitable network adapters are required in the PC station to establish the connection to the
communication partners in the plant.
Network adapter Number of con‐
nections
Connection type Redundancy type
1x Standard Ethernet
network adapter
8 S7 connection -
4 S7 connection, fault-tolerant
(prerequisite: CPU as of firmware ver‐
sion V6.0)
2-way redundancy
1x Communications pro‐
cessor
(CP 16x3/CP 1628)
64 S7 connection -
32 S7 connection, fault-tolerant 2-way redundancy
2x Communications pro‐
cessor
(CP 16x3/CP 1628)
32 S7 connection, fault-tolerant 2-way redundancy
16 S7 connection, fault-tolerant 4-way redundancy
High availability solutions in PCS 7
4.3 Solutions for communication
High Availability Process Control Systems (V9.0)
68 Function Manual, 05/2017, A5E39221836-AA
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