Configuration
The following figure shows examples for the connection of the IO devices to the H-system.
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Application planning
Observe the following rules for configuring the IO devices:
Configuration (see
figure under Config‐
uration)
③
System redundancy
(1 subnet)
④
System redundancy
(2 subnets in a line struc‐
ture)
⑤
System redundancy
+ Media redundancy
(2 subnets in a ring struc‐
ture)
Coupling
S2
R 1
R 1
MRP
Hardware
IO device with 1 interface
module
Redundant IO device (IO device with 2 interface
modules)
Mounting rule
No special considera‐
tions
Redundantly used interface modules must be identi‐
cal, i.e. they must have the same article number and
the same hardware version or firmware version.
Plant planning
4.8 Redundancy and changes during operation
ET 200SP HA Distributed I/O system
System Manual, 08/2019, A5E39261167-AD
45
Summary of Contents for SIMATIC ET 200SP HA
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