Siemens SIMATIC CPU 410 User Manual

Plant changes during redundant operation - H-CiR
12.4 Motivation for H-CiR via PROFINET IO
CPU 410 Process Automation/CPU 410 SMART
System Manual, 05/2017, A5E31622160-AC
201
12.4
Motivation for H-CiR via PROFINET IO
When it is possible to perform plant changes in process mode / RUN during redundant
operation, this enables a high availability of the plant.
The H-CiR procedure relies on already defined and implemented procedures of fault-tolerant
systems.
● From the perspective of the CPU, H-CiR adds the following functions to commissioning:
– Change of user programs in RUN
– Control of operating state transitions (startup, switchover, stop)
– FW update with the logical update method
● From the perspective of STEP 7, H-CiR adds the following functions to commissioning:
– Control of operating state transitions (switchover with "Start with...")
Plant changes during redundant operation - H-CiR for PNIO
The table below shows the options of the distributed I/O for plant changes during redundant
operation:
H-CiR operation
Basic support
S1 configu-
ration
S2 configu-
ration
Device not
CIR-
capable
S2 configu-
ration
Device CIR-
capable
R1 configu-
ration
Device not
CIR-
capable
R1 configu-
ration
Device CIR-
capable
Add IO controller
Yes
No
No
No
No
No
Remove IO controller Yes No No No No No
Replace IO controller
No
No
No
No
No
No
Add IO device
Yes
Yes
Yes
Yes
Yes
Yes
Remove IO device
Yes
Yes
Yes
Yes
Yes
Yes
Replace IO device
No
No
No
No
No
No
Add PDEV submodule
No
No
No
No
No
No
Remove PDEV submodule
No
No
No
No
No
No
Replace PDEV submodule
No
No
No
No
No
No
Add submodule
Yes
No
No
Yes
No
Yes
Remove submodule
Yes
No
No
Yes
No
Yes
Replace submodule
No
No
No
No
No
No
Re-configure PDEV submodule
Yes
No
No
Yes
No
Yes
Re-configure submodule
Yes
No
No
Yes
No
Yes
Range of validity
You can modify a plant during operation using H-CiR in plant units with distributed I/O. The
configuration in the figure below is one example. For the sake of clarity, it only includes one
PNIO subsystem. These limitations do not exist in reality.
H-CiR assumes the following configuration:

Siemens SIMATIC CPU 410 Specifications

General

Brand	Siemens
Model	SIMATIC CPU 410
Category	Control Unit
Language	English