Siemens CPU 410-5H Process Automation - Displaying and Changing the System State of a Fault-Tolerant System; System Status Change from the STOP System State

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/CPU 410 SMART
100 System Manual, 10/2013, A5E32631667-AA
System states of the fault-tolerant
system
Operating states of the two CPUs
Master
Reserve
Redundant
RUN
RUN
Hold HOLD STOP, ERROR-SEARCH, power off,
DEFECTIVE, no synchronization
7.2.3
Displaying and changing the system state of a fault-tolerant system
Procedure:
1. Select a CPU in SIMATIC Manager.
2. Select the PLC > Operating state menu command.
Note
Stop is only possible with authorization.
Result:
The "Operating state" dialog box shows the current system state of the fault-tolerant system
and the operating states of the individual central processing units.
The CPU that was selected in SIMATIC Manager when the menu command was executed is
the first one displayed in the table.
Changing the system state:
The options of changing the system state depend on the current system state of the fault-
tolerant system.
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
mode" dialog using the PLC > 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).