Changing Cpu Parameters Offline; Opening The H-Cir Wizard - Siemens SIMATIC CPU 410 System Manual

12.10.2

Changing CPU parameters offline

Starting situation
The fault-tolerant system is operating in redundant system mode.
Procedure
1. Edit the relevant CPU properties offline in HW Config.
2. Compile the new hardware configuration, but do not load it into the target system just yet.
Result
The modified hardware configuration is in the PG/ES. The target system continues operation
with the old configuration in redundant system mode.
12.10.3

Opening the H-CiR wizard

The H-CiR wizard takes over the next step.
Reaction of the I/O to the new master CPU
While the previous master CPU is still in STOP, the I/O reacts to the new master CPU as
follows:
Type of I/O
I/O modules
1) CPUs are also first reset. Output modules briefly have 0 (instead of the configured substitute or holding values).
Reaction of the I/O to entering redundant mode
The fault-tolerant system is in redundant mode with the new configuration. The I/O reacts as
follows:
Type of I/O
I/O modules
1) CPUs are also first reset. Output modules briefly have 0 (instead of the configured substitute or holding values).
CPU 410 Process Automation/CPU 410 SMART
System Manual, 05/2017, A5E31622160-AC
One-sided I/O of the previous
master CPU
No longer accessed by the
CPU.
Output modules have the con-
figured substitute or holding
values.
One-sided I/O of the reserve
CPU
Newly configured and updat-
1)
ed by the CPU.
Plant changes during redundant operation - H-CiR
One-sided I/O of the new mas-
ter CPU
Newly configured and updat-
1)
ed by the CPU.
One-sided I/O of the master
CPU
Continue working without interruption.
12.10 Editing CPU parameters
Switched I/O
Continue working without inter-
ruption.
Switched I/O
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