Plant changes during redundant operation - H-CiR
12.2 Replacing central components
CPU 410 Process Automation/CPU 410 SMART
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System Manual, 05/2017, A5E31622160-AC
12.2
Replacing central components
Which central components can be modified?
The following changes can be made to the hardware configuration during operation:
●
Changing certain CPU parameters
●
Re-configuring a module
●
Assigning a module to another process image partition
●
Upgrading the CPU version
●
Upgrading to a higher product version or a current version of components used such as
external DP interface modules.
●
Adding or removing modules in the CPU or expansion units (for example one-sided I/O
module).
Note
IM 460, IM 461 and CP 443-5 Extended
You can only add or remove the IM 460 and IM 461 interface modules, the external CP
443-5 Extended DP master interface module or the relevant connecting cables when the
system is de-energized.
Note
Signal modules in the CPU with substitute value capability
For signal modules with substitute value capability in a CPU, the minimum I/O hold time is
ineffective following a plant change. There is always a gap of 3 to 50 ms.
For all changes, please observe the rules for the assembly of an H station.
Changes to the hardware configuration
With a few exceptions, all elements of the configuration can be modified during operation.
Configuration changes will usually also affect the user program.
The following must not be changed by means of system modifications during runtime:
●
Certain CPU parameters (for details, please refer to the relevant sections)
●
The transmission rate (baud rate) of redundant DP master systems
●
S7 and S7 H connections
Note
For a switched I/O: complete all changes to one of the redundant DP master systems or IO
controllers before you make changes to the second DP master system or IO controller.
