Operator controls and operating modes of the CPU 410-5H
7.2 System states of the redundant CPU 410-5H
CPU 410-5H Process Automation
System Manual, 09/2014, A5E31622160-AB
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7.2.4
System status change from the STOP system state
Requirement
You have selected one of the two CPUs in SIMATIC Manager and opened the "Operating
state" dialog box using the PLC > Diagnostics/Setting > Operating state menu command.
Changing to redundant system mode (starting the fault-tolerant system)
1.
Select the fault-tolerant system in the table.
2.
Select the Restart button (warm restart).
Result:
The CPU displayed first in the table starts up as master CPU. Then the second CPU starts
up and will become the standby CPU after link-up and update operations.
Changing to standalone mode (starting only one CPU)
1.
In the table, select the CPU you want to start up.
2.
Select the Restart button (warm restart).