Siemens SIMATIC PCS 7 System Manual

Plant changes during redundant operation - H-CiR
12.10 Editing CPU parameters
CPU 410 Process Automation/CPU 410 SMART
System Manual, 05/2017, A5E31622160-AC
219
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
One-sided I/O of the previous
master CPU
One-sided I/O of the new mas-
ter CPU
Switched I/O
I/O modules No longer accessed by the
CPU.
Output modules have the con-
figured substitute or holding
values.
Newly configured
1)
and updat-
ed by the CPU.
Continue working without inter-
ruption.
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
One-sided I/O of the reserve
CPU
One-sided I/O of the master
CPU
Switched I/O
I/O modules Newly configured
1)
and updat-
ed by the CPU.
Continue working without interruption.
1) CPUs are also first reset. Output modules briefly have 0 (instead of the configured substitute or holding values).

Siemens SIMATIC PCS 7 Specifications

General

Brand	Siemens
Model	SIMATIC PCS 7
Category	Control Systems
Language	English